Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Confidential letter discussing left-hand steering and a move in the US to standardize 20-inch wheels and tires. | ||
| View original record | X4565 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy3-W-11722 November 7, 1922. CONFIDENTIAL Mr. E. W. Hives, Rolls-Royce, Limited, Derby, England. Dear Hives: Replying to your letter Hs2,… | ||
| Scan002 | Letter discussing the testing of 32x6 tires and wheels before implementing 4-wheel brakes. | ||
| View original record | OY3-W-11722 -2- I think you should test several sets of 32x6 tires and wheels, before you take the plunge on 4-wheel brakes. Will you consider this? We should be glad to send you a set or two if you… | ||
| Scan003 | Letter to Dunlop Rubber Co. Ltd. discussing a new 32 X 6 tyre being standardized in the US market and suggesting testing. | ||
| View original record | X4585 Hsl/LG. 21st. Nov. 1922. Messrs. The Dunlop Rubber Co.Ltd., Aston Cross, Birmingham. Dear Sirs, For the attention of Mr. Paull. We have recently received information from our American Factory,… | ||
| Scan004 | The proposed move to smaller wheels with fatter tyres and lower tyre pressures. | ||
| View original record | contd:- -2- Of course, the public have to be won over, but since a smaller wheel and fatter tyre increases the apparent length of the car, I don't think we should get much opposition from that… | ||
| Scan005 | Letter from Dunlop Rubber Co Ltd discussing developments in tyre sizes for 20-inch wheels. | ||
| View original record | X4565 TELEGRAMS: "DUNLOPS BIRMINGHAM." TELEPHONE NO. ERDINGTON 261 (PTE. Bx. Ex. EXTENSION............. Central 4108. DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. STATION: CASTLE… | ||
| Scan006 | Continuation sheet from The Dunlop Rubber Co. Ltd. discussing tests on low-pressure propositions. | ||
| View original record | F A121 D.R. CO. LTD. CONTINUATION SHEET No. 19 - 2 - tests such as we have already been able to make on other sizes, indicate that this low pressure proposition can be carried too far, tending to… | ||
| Scan007 | Trend of increasing tyre sizes in the USA for the 40/50 HP model, and the potential for testing. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to HY. c. to Da. X4585 Hs2/LGS.12.22. TYRES FOR 40/50 HP. X4585 We have heard from OY. that there is a movement amongst the Tyre makers in U.S.A. to increase the… | ||
| Scan008 | Letter from Dunlop Rubber Co. Ltd. discussing developments in larger section tyres for 20-inch wheels. | ||
| View original record | COPY. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Messrs. Rolls Royce Ltd., Nightingale Rd., Derby. 28th. Nov. 1922. dict. 27th. For the attention of Mr. Hives. Dear Sirs,… | ||
| Scan009 | Outlining the weight increase effects of a new inner tube and discussing the trade-off between added weight and potential advantages. | ||
| View original record | X4565 To C.J. from Hs. Hs2/LG3.2.23. X4565 X20 Referring to your memo. CJ2/E2.2.23. The effect of the increase in weight of the propose new inner tube will be as follows :- % increase in weight.… | ||
| Scan010 | Confidential memo regarding Dunlop's experiments with low pressure, big section, pneumatic tyres and attaching results from tests on a Cadillac car. | ||
| View original record | Confidential Hs. from ROY. o. to BY. X.4565 ROY1/MG28.4.23 As you know, the Dunlop Company for some time past have been experimenting with Low Pressure, big Section, pneumatic Tyres. Attached is… | ||
| Scan011 | Extract from a report detailing a road test and feedback on low-pressure tyres. | ||
| View original record | Extract Low Pressure Tyres Last Thursday I fitted these to the Cadillac, and ran down home to Woldingham, and during the week-end round Winchester etc till Tuesday, when I came back here having done… | ||
| Scan012 | Extract detailing tyre tests and the development of a new single-piece aluminium alloy wheel. | ||
| View original record | Extract. (2) 105 Canvas tyre at 55 lbs. axle raised 1.1/8 105 Cord " " 45 " " 11/16 6" L.P " " 20 " " 1/16. My tyre in this case does not leave the ground at all. (m) You can't pull it off or damage… | ||
| Scan013 | Confirming a rescheduled meeting with the Dunlop Company to discuss large section Low Pressure Tyres. | ||
| View original record | X4565 Hs. from ROY. cr. to BY ROY1/MG9.5.23 Messrs. Blake and Lacbeth, of the Dunlop Company will be here on Friday to discuss large section Low Pressure Tyres. You will recollect they were compelled… | ||
| Scan014 | Visit from a Dunlop Rubber Co. engineer demonstrating new low-pressure tyres. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. X4565 HS5/LG16.5.23. TYRES. X.4565 X.3538. We have recently had a visit from Mr. Macbeth Experimental Engineer for the Dunlop Rubber Co. He… | ||
| Scan015 | The testing and evaluation of new Dunlop tyres for the 20 HP and 40/50 HP models. | ||
| View original record | contd:- -2-2 as a bicycle tyre. The rim, having no loose flange, is water-tight. The weight of the complete tyres and wheels is practically the same as the present standard. The peripheral weight is… | ||
| Scan016 | Front and rear axle weights of 20 HP and 40/50 HP average touring cars, intended for Dunlop. | ||
| View original record | X.4865 Roy. from Hs. 17.5.23. AVERAGE TOURING CARS - WEIGHT WITHOUT PASSENGERS. 20 HP. front axle 13 cwts. rear axle 17 cwts. 40/50 HP. front axle 20 cwts. rear axle 22 cwts. Will you please pass… | ||
| Scan017 | Cover note for correspondence with the Dunlop Company regarding low pressure tyres. | ||
| View original record | Hs. from ROY. V4565 ROY2/AG14.7.23 Low Pressure Tyres. Herewith, for your information, copies of correspondence with the Dunlop Company, Fort Dunlop. ROY. ENCLOSURES. 2 from Dunlop 11.7.23 to "… | ||
| Scan018 | Letter from Dunlop Rubber Co. Ltd. regarding the supply and testing of low-pressure tyres. | ||
| View original record | Copy of Letter. From: DUNLOP RUBBER CO.LTD. Fort Dunlop Erdington Birmingham Experimental Engr.M/E July 11th.1923 Messrs. Rolls Royce Ltd. DERBY. Dear Sirs:- LOW PRESSURE TYRES In reply to yours of… | ||
| Scan019 | Letter to Dunlop Rubber Co. Ltd. concerning the progress of low pressure tyres. | ||
| View original record | Copy for Mr. Hives July 14th.1923 Your Ref: Experimental Engr. M/E Ref: ROY1/AG14.7.23 Messrs. The Dunlop Rubber Co.Ltd. Fort Dunlop ERDINGTON Nr. Birmingham Dear Sirs:- LOW PRESSURE TYRES We thank… | ||
| Scan020 | To arrange a meeting with Mr. Macbeth to discuss larger super-cushioned tyres received from Dunlop's. | ||
| View original record | X4565 Roy. from Hs. Hs2/LG 17.8.23 Re. Super-cushioned Tyres. With reference to the larger size tyres and wheels which we recently received from Messrs. Dunlop's. We think it would be useful if Mr.… | ||
| Scan021 | The initial testing of Dunlop super-cushion tyres. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 4565 REF: Hs3/LG17.8.23. To R. from Hs. c. to DJ. E. c. to Da. CY. RE. SUPER-CUSHION TYRES. We have received from Messrs.… | ||
| Scan022 | The performance of special low-pressure tyres developed by the Dunlop Rubber Co. | ||
| View original record | R.R. 493A (40 H) (EL 42 12-7-23). J.H., D. COPY. EXPERIMENTAL REPORT. Expl. No. 4565 REF: Hs5/LG16.5.23. To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. TYRES. We have recently had a visit from… | ||
| Scan023 | The performance and characteristics of a new tyre design, including comparative tests. | ||
| View original record | R.R. 403A (40 H) (SL 12 12-7-23). J.H.,D. EXPERIMENTAL REPORT. Expl. No. 4565 REF: HED/L.D:16.9.23. as a bicycle tyre. The rim, having no loose flange, is water-tight. The weight of the complete tyres… | ||
| Scan024 | Inquiring about the progress of special tyres and rims from Dunlop for the 40/50 and Goshawk models. | ||
| View original record | X4565 Roy. from Hs. Hs5/LG7.7.23. We should be interested to hear how Messrs. Dunlop are getting along with the special tyres and rims for the 40/50 and Goshawk. Hs. | ||
| Scan025 | Weight specifications for a 36' x 6' Special Dunlop tyre and wheel assembly. | ||
| View original record | Handwritten: A/S Handwritten: x4565- 13.8.23. SPECIAL DUNLOP TYRES 36" X 6". Wheel complete 74 lbs. Cover 34 " 10 ozs. Tube 5 " 8 " Wheel 34 " 0 " Total 74 2 " GWH. | ||
| Scan026 | Super-cushion Tyres and an accompanying pamphlet. | ||
| View original record | To Mr. H. from BJ. Copies to Hs. X4565 BJ/Py15/H14.8.23. Re Super-cushion Tyres. I attach hereto a copy of Oy2/W-3423 of the 4th August from Springfield. Only one copy of the pamphlet referred to has… | ||
| Scan027 | Letter reporting on the performance, mileage and specifications of Super-cushion tires. | ||
| View original record | Oy2-N-3425 August 4, 1923. Mr. Claude Johnson, Rolls-Royce, Limited, London, England. (Copy for attention of Mr. Royce Mr. Platford Mr. Hives) Dear Sir: Re Super-cushion Tires In our letters of March… | ||
| Scan028 | Advantages and performance characteristics of 'Super-cushion' tires. | ||
| View original record | Oy2-N-8425 -2- between wheel housings of 1" (44" to 45"), decrease in radius in corner of wheel housing from 5" to 3", and increase in width of tire well in front mudguard from 6" to 7 3/4". These… | ||
| Scan029 | The experimental development of new tire sizes by Dunlop and other English manufacturers. | ||
| View original record | Oy2-W-8425 -3- We are now told that Dunlop and the other English tire and wheel manufacturers are taking up experimental development of these sizes. We believe therefore that test of these tires is… | ||
| Scan030 | Proposal to adopt larger, softer, low-pressure tyres to improve ride quality. | ||
| View original record | TO BJ. OY. CJ. HS. BY. EP. ROY. } from R. Handwritten: X4565 R2/M15.8.23. & ALTERATIONS TO TYRES. X.4565 X.3895 Handwritten: V3602 I learn from OY. that the tyre makers in U.S.A. are proposing to… | ||
| Scan031 | Note expressing a preference for a 6-inch measurement over a 7-inch one for being safer. | ||
| View original record | contd:- -2- I should prefer the safer policy of first using 6" as I fear 7" may be going too far. R. | ||
| Scan032 | Meeting with Mr. Macbeth of Dunlop's about super-cushioned tyres. | ||
| View original record | Y4565 Roy. from Hs. Hs2/LG 17.8.23 Re. Super-cushioned Tyres. With reference to the larger size tyres and wheels which we recently received from Messrs. Dunlop's. We think it would be useful if Mr.… | ||
| Scan033 | Comparison of the moment of inertia for a 40/50 wheel fitted with 33 X 5 cord and balloon tyres. | ||
| View original record | X4565 20823 COMPARISON OF MOMENT OF INERTIA OF 40/50 WHEEL FITTED WITH 33 X 5 CORD AND BALLOON TYRES. X4565 I = 32 (Wrt^2 / 4π^2 - Wr^2 / g) Cord tyre W = 9.75 lbs. wt. r = 1.502 ft. t = 3.06 secs. I… | ||
| Scan034 | Super Cushion Tyres, attaching a letter from Springfield on the same topic. | ||
| View original record | X4565 To R. from BJ. Copies to WP. [strikethrough] -> Hs. BJ11/H27.8.23. Re SUPER CUSHION TYRES. We attach a copy of a letter from Springfield on this subject, Oy9/W81523, of August 15th. The… | ||
| Scan035 | Letter forwarding an article by J. E. Hale of Firestone regarding Super Cushion Tires. | ||
| View original record | Oy9-W-S1528 August 15, 1923. Mr. Claude Johnson, Rolls-Royce, Limited, London, England. (Copy for attention of Mr. Royce) Mr. Platford) Mr. Hives)✓ Dear Sir: COPY Re Super Cushion Tires We have… | ||
| Scan036 | Letter from Dunlop discussing the experimental results of low-pressure tyres compared to normal tyres. | ||
| View original record | X 4565 By Appointment To H.M. The King DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE Nos. (6 LINES): ERDINGTON 261 TO 266. STATION: CASTLE… | ||
| Scan037 | Letter from Dunlop Rubber Co Ltd. regarding big section tyres and offering a demonstration of low-pressure tyres to Mr. Royce. | ||
| View original record | 2. away from them, and of course gets a much wider base rim which positively prevents rolling excepting at unduly low pressures. Personally I think it would be a mistake for you not to adopt the big… | ||
| Scan038 | Paper discussing the limitations of pneumatic motor tyre design and the subsequent development of a more comfortable, large section tyre. | ||
| View original record | 1. In February 1921 when I had the honour of reading a paper before this Institution on the Design and Manufacture of Pneumatic Motor Tyres, I summarised the limiting features which hampered the tyre… | ||
| Scan039 | Technical document discussing tyre design, including section increases, inflation pressures, and construction materials. | ||
| View original record | 2. -Ease of manufacture - Chassis clearance - Tyre handling - Cost. I have found that in place of normal sections it is feasible to increase the section by 50% retaining normal outside diameters,… | ||
| Scan040 | The merits of tyre contact area, comparing low-pressure and normal tyres. | ||
| View original record | 3. In practice with the Low Pressure Tyre the increase in length of contact is ....% as an average, this being of .......% as compared with the 50% increase in sectional down size. 11. "WIDE CONTACT"… | ||
| Scan041 | Comparison of the puncture resistance and cushioning effects of low-pressure versus normal tyres. | ||
| View original record | 4. Reference to this Table shews that the "axle displacement" caused when using Low Pressure Tyres is normally 5/6 as much as when using normal tyres. 15. PUNCTURE RESISTANCE. Reduction in internal… | ||
| Scan042 | The benefits of Low Pressure Tyres, focusing on ease of handling and safety features. | ||
| View original record | 5. 17. MAKE TYRE EASIER TO HANDLE. All motorists object to having to fit or take off tyres. A new B/E tyre is always hard to fit and the used S/S tyre is often difficult to handle due to rust causing… | ||
| Scan043 | Effects of low-pressure tyres on vehicle performance characteristics. | ||
| View original record | 6. In effect also this tyre when in deflated condition becomes a cushion tyre and provides a "soft" bed which prevents casing or tube destruction - whereas normal tyres tend to chafe the tube and… | ||
| Scan044 | The effects and benefits of using Low Pressure Tyres, including weight reduction, appearance, and standardization. | ||
| View original record | 7. the crank shaft may revolve ......o before tyre slippage takes place as against .........o with Low Pressure Tyres. This fact should appreciably reduce wear on transmission and enable slow running… | ||
| Scan045 | Proposing the adoption of Low Pressure Tyres and a simplified range of substitutes for various car models. | ||
| View original record | 8. different types of tyre made for one and the same type of car is an admission that nonne "Best" tyre has yet been adopted. The adoption of the Low Pressure Tyre principle might appear tardy but… | ||
| Scan046 | Proposed new range of low-pressure tyres, their specifications, and fitting considerations for older chassis. | ||
| View original record | 9. Originally the Writer proposed to advocate making each size of tyre in two weights so that a 34 x 7 tyre could be substited by a Light 36 x 8 but further experience goes to show that the great… | ||
| Scan047 | Urgent fitting of special wheels and 'Balloon Tyres' to Mr. Royce's car, noting a delay from Coventry. | ||
| View original record | Y4565 Wd. from Hs. Hs2/LG30. 8. 23. BALLOON TYRES. Y4565 As you are aware, Messrs. Dunlop have supplied us with a set of special wheels fitted with larger section tyres for the 40/50 H.P. They are… | ||
| Scan048 | Letter to Dunlop Rubber Co. Ltd. regarding the testing and supply of Balloon Tyres for experimental cars. | ||
| View original record | X.4565 HSl/LG. 30th. Aug. 1923. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Macbeth. With reference to the Balloon Tyres which we are… | ||
| Scan049 | Letter from Dunlop Rubber Co Ltd regarding tyres and wheels for a car for Mr. Royce. | ||
| View original record | x 4565 By Appointment To H.M The King. DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE Nos. (6 LINES): ERDINGTON 261 TO 266. STATION: CASTLE… | ||
| Scan050 | Confirming the dispatch of wheels and balloon tyres from Dunlop Rubber Co. Ltd for the 20 HP chassis. | ||
| View original record | Hs. from Wd. Y4565 Wd6/NJ31.8.23. Balloon Tyres. Yours Hs2/LG30.8.23. I am pleased to be able to announce the receipt of a message from Col.Matthew, of the Dunlop Rubber Co.Ltd, stating that wheels… | ||
| Scan051 | Letter from Dunlop regarding tyre testing and a request to borrow a set of wheels. | ||
| View original record | 7485 By Appointment To H.M. The King. DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE Nos. (8 LINES): ERDINGTON 261 TO 266. STATION: CASTLE… | ||
| Scan052 | Graph comparing the tractive resistance of standard tyres versus balloon tyres at various speeds. | ||
| View original record | 45 LBS / □" INFLATION STANDARD TYRE. 30 LBS REAR 25 LBS / □" FRONT BALLOON. TESTS 49 G B. TOTAL CAR T.R. LBS PER TON. M.P.H. TRACTIVE RESISTANCE COMPARISON 49/50. 33x5 STANDARD TYRES 33x6 BALOON TYRES… | ||
| Scan053 | Letter to Dunlop Rubber Co. Ltd. regarding the arrangement to send wheels and tyres. | ||
| View original record | X4565 Hs2/LG. 5th. Sept. 1923. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Macbeth. With reference to your letter of the 3rd. inst. We… | ||
| Scan054 | Returning wire wheels with large tyres to Dunlop Rubber Co. after testing. | ||
| View original record | Hs/Mr.Hancock. c. to D/BP. c. to CHT. U.W. X 4565 Wd/Ms26/DB8.9.23. Please send into Stores for returning to Messrs. Dunlop Rubber Co., the wire wheels fitted with large tyres lent to us for testing.… | ||
| Scan055 | Experimenting with larger section Dunlop tyres for 40/50 HP and 20 HP cars. | ||
| View original record | X4865 To B.J. from Hs. Hs4/LG12.9.23. RE. TYRES. With reference to your BJ1/DN8.9.23 attached. R. was not aware when he wrote his memo. that we were already experimenting with these tyres at Derby. We… | ||
| Scan056 | Comparison of performance between balloon and cord normal tyres, detailing acceleration, speed, and hill climb tests. | ||
| View original record | X4565 BALLOON AND CORD NORMAL TYRES. Acceleration and speed comparisons. Car used - 6-Goshawk-11. Weight with passengers 1 ton. 11 cwts. 2 qrs. Road surface dry - wind gusty. Axle 11 X 50 = 4.545… | ||
| Scan057 | The performance tests of balloon tyres compared to normal cord tyres. | ||
| View original record | Hs. from Rn. X.4565 Hs/Rml/LG13.9.23. BALLOON TYRE TESTS. These tyres were, first of all, inflated to 20 lbs. per sq.in. all round but as the riding qualities did not appear to be equal to the tyres… | ||
| Scan058 | Letter to Dunlop Rubber Co. Ltd. regarding the performance of Balloon Tyres on a 20 HP car and an inquiry about 40/50 HP wheels. | ||
| View original record | X4565 HS6/LG. 28th. Sept. 1923. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Macbeth. The Balloon Tyres fitted to the 20 HP. car are still… | ||
| Scan059 | Letter from Dunlop confirming the dispatch of six 33 x 5 S/S tyres with tubes and flaps for testing. | ||
| View original record | X4565 Telegraphic Address "DUNLOPS, BIRMINGHAM" Telephone No. CENTRAL 4108. Registered Offices DUNLOP HOUSE, 1, ALBANY ST. LONDON, N.W.1. BY APPOINTMENT DUNLOP RUBBER CO LTD Founders of the Pneumatic… | ||
| Scan060 | Travel arrangements for a Dunlop representative and reporting a successful tyre test on Snowdon. | ||
| View original record | X 4565 Hs. from ROY. ------------------- ROY26/MGL.10.23 Mr. MacBeth, of the Dunlop Company, has just been on the 'phone and would be glad if you would post the Letter of Introduction you are sending… | ||
| Scan061 | Letter to the Dunlop Rubber Co. detailing issues of noise and vibration experienced with their Balloon tyres. | ||
| View original record | X4565 Hs13/LG. 1st. Oct. 1923. Messrs. The Dunlop Rubber Co., Erdington, Birmingham. Dear Sirs, For the attention of Mr. Macbeth. X3538 X4565 We will not repeat the known advantages of the Balloon… | ||
| Scan062 | Testing of balloon tyres, focusing on vibration and noise issues on different car models. | ||
| View original record | contd:- -2- With the Balloon tyre tyres it is there to a considerably increased extent. The actual complaint in this tyre is a vibration somewhere between 20 and 15 m.p.h. On the 40/50 HP. car with… | ||
| Scan063 | Letter to M. Olley in America regarding Balloon Tyres, a visit from Dunlop, and tyre testing results. | ||
| View original record | X4585 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby England. 1st. Oct. 1923. M. Olley, Esq. Messrs. R-R (America) Inc., Springfield, Mass., America. OY. from Hs. BALLOON TYRES. We attach herewith a copy… | ||
| Scan064 | Letter from Dunlop discussing the performance and development of low pressure tyres. | ||
| View original record | Y4565 By Appointment To H.M. The King DUNLOP RUBBER Cº LTº FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE No. ERDINGTON 261 (PTE. BX. EX.)… | ||
| Scan065 | Letter from Dunlop Rubber Co Ltd acknowledging receipt of a letter and forwarding it on. | ||
| View original record | x 4865 By Appointment To H.M. The King DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE No. ERDINGTON 261 (PTE. BR. EX.) EXTENSION STATION:… | ||
| Scan066 | Letter to Dunlop Rubber Co. Ltd. requesting dimensions for 33 X 8' and 33 X 7' tyres. | ||
| View original record | (45b5) HS3/LG. 2nd. Oct. 1923. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Expl: Dept: We should be pleased if you could let us have… | ||
| Scan067 | Letter from Dunlop regarding the effective radius of 36 x 8 and 34 x 7 Low Pressure Tyres. | ||
| View original record | By Appointment To H.M. The King DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE NO. ERDINGTON 261 (PTE. BR. EX.) EXTENSION STATION: CASTLE… | ||
| Scan068 | Cross-section drawing of a 34x7 Traction Tread Low Pressure Tyre. | ||
| View original record | 34 5/8 DIA. 7 1/4 20 DIA 34x7 TRACTION TREAD L.P.T. OVERALL DIMENSIONS LOW PRESSURE TYRE 34x7 DRAWN BY CHECKED BY R 23-10-23 EQUIPMENT DEPT FORT DUNLOP DATE ISSUED SK N° 5163 | ||
| Scan069 | Blueprint showing the overall dimensions and cross-section of a 36x8 Low Pressure Traction Tread tyre. | ||
| View original record | 37 1/4 DIA 8 1/2" 20 DIA 36x8 TRACTION TREAD L.P.T OVERALL DIMENSIONS LOW PRESSURE TYRE 36x8 DRAWN BY CHECKED BY R.L. 3.10.28 EQUIPMENT DEPT FORT DUNLOP DATE ISSUED SK. N.o 5164 | ||
| Scan070 | Letter from Dunlop requesting the testing of six 33 x 5 S/S Cord Covers and for their mileage to be recorded. | ||
| View original record | Telegraphic Address. "DUNLOPS, BIRMINGHAM". Telephone No. CENTRAL 4108. Registered Offices. DUNLOP HOUSE, 1, ALBANY ST. LONDON, N.W.1. BY APPOINTMENT DUNLOP RUBBER CO LTD Founders of the Pneumatic… | ||
| Scan071 | Letter to The Dunlop Rubber Co. Ltd. regarding the return of a set of 40/50 HP wheels and low-pressure tyres, and enquiring about a second set. | ||
| View original record | X4565 Hsl/LG. X3725 X4565 23rd. Oct. 1923. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Expl: Dept: We should be pleased if you would let us… | ||
| Scan072 | Letter from Dunlop regarding the return of loaned 40/50 HP wheels and tyres, and the dispatch of a second set. | ||
| View original record | X4565 By Appointment To H.M. The King DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE NO. ERDINGTON 261 (PTE. BR. EX.) EXTENSION..........… | ||
| Scan073 | Set of Dunlop Balloon Tyres being sent to Stores for collection by Messrs. Dunlop. | ||
| View original record | X4565 To Mr. Chatwin Stores from Expl: c. to BP. Hs/GWH1/LG20.11.23. We are sending into the Stores - to be collected by Messrs. Dunlop early this week :- 1 set of Dunlop Balloon Tyres 33 X 8. These… | ||
| Scan074 | Points to consider regarding the fitting of balloon tyres to a Croalls 20HP demonstration chassis. | ||
| View original record | X4565 W/S. c. Sn. c. Hs. c. HP. CROALLS 20HP DEMONSTRATION CHASSIS. Referring to C/RWC3/W151223, we note that a Sales Conference have agreed that balloon tyres may be fitted to chassis - thepoints in… | ||
| Scan075 | Letter from Dunlop Rubber Co Ltd regarding a delay in the delivery of new pattern tyres. | ||
| View original record | X4565 By Appointment To H. M. The King DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE NO. ERDINGTON 261 (PTE. Bx. EX.)… | ||
| Scan076 | Instructing the Stores to despatch a loaned experimental inner tube to Messrs. Dunlop. | ||
| View original record | BP. from Hs. c. to Mr. Chatwin. Y4565 Hs4/LG10.12.23. We are sending into the Stores for despatch to Messrs. Dunlop (attention of Mr.Macbeth) Fort Dunlop, Erdington, Birmingham - 1 Inner Tube. This… | ||
| Scan077 | Letter to Dunlop Rubber Co. returning a faulty inner tube and providing feedback on their low-pressure tyres. | ||
| View original record | X4565 Hs3/LG. X4565 X4050 10th. Dec. 1923. Messrs. The Dunlop Rubber Co. Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Macbeth. We are returning to you one of the Inner Tubes… | ||
| Scan078 | Letter concerning the return of a borrowed set of 40/50 wheels and tyres and mileage records. | ||
| View original record | Contd:- -2- We should be pleased to hear from you when we might expect the set of 40/50 wheels and tyres also when you will be able to return to us the set of wheels you borrowed. We do not know… | ||
| Scan079 | Letter from Dunlop regarding low pressure tyres, side slip issues, and replacement wheel sets. | ||
| View original record | X4565 By Appointment To H.M. The King DUNLOP RUBBER CO LTD FOUNDERS OF THE PNEUMATIC TYRE INDUSTRY. TELEGRAMS: "DUNLOPS, BIRMINGHAM." TELEPHONE No. ERDINGTON 261 (PTE. BN. EX.)… | ||
| Scan080 | Failed tube being replaced and sent to Messrs. Dunlop. | ||
| View original record | To Mr. Pope from Hs. c. to Mr. Chatwin. X4565 HsL/LG11.1.24. We are sending into the Stores for despatch to Messrs. Dunlop :- This tube has failed on test and will be replaced by a new one. 1 - 34 x 7… | ||
| Scan081 | Letter to Dunlop regarding a tyre inner tube failure on a 20 HP car and requesting a replacement. | ||
| View original record | X4865 Hs1/LG. 11th. Jan. 1924. Messrs. Dunlops, Fort Dunlop, Erdington, Birmingham. Dear Sirs, With reference to the 32 X 7 Tyres which we are running on a 20 HP. Car. We have had another inner tube… | ||
| Scan082 | Confirming a visit from representatives of the Dunlop Company to discuss low-pressure tyres. | ||
| View original record | BY) Hs.) from ROY. ---------------- X4565 ROY4/AG16.1.24 ---------------- Low Pressure Tyres Kindly note, as arranged, Messrs. Blake and Macbeth, of the Dunlop Company, will be visiting us on Friday… | ||
| Scan083 | Draft letter to the Dunlop Company concerning arrangements for low-pressure tyres and the return of wheels. | ||
| View original record | X4565 Hs. from ROY. ROY14/LG21.1.24 Low Pressure Tyres Attached is draft of a letter I propose addressing to the Dunlop Company, setting out the arrangements made on Friday. Are you in agreement, and… | ||
| Scan084 | Letter to Dunlop Rubber Co. Ltd. confirming arrangements for rebuilding wheels to suit different sized low-pressure tyres. | ||
| View original record | Ref: ROY13/MG21.1.24 January 21st.1924 Messrs. The Dunlop Rubber Co.Ltd. Broad Street Chambers, Easy Row, BIRMINGHAM Dear Sirs:- Low Pressure Tyres We would confirm the arrangements made on Friday,… | ||
| Scan085 | The performance of Balloon Tyres after mileage testing, including conclusions on skidding and braking. | ||
| View original record | R.R. 493 A (40 H) (SL 42 12-7-23). J.H., D. 4565 EXPERIMENTAL REPORT. Exptl. No. 4565 REF: HS1/LG21.1.24. To R. from Hs. c. to CJ. RG. c. to DA. E. c. to BY. OY. BALLOON TYRES. We have now completed… | ||
| Scan086 | The performance and characteristics of Balloon tyres, page 2. | ||
| View original record | R.R. 693 A (40 H) (SL 42 12-7-23). J.H.,D. -2- EXPERIMENTAL REPORT. Expl. No. 4565 REF: Hs1/LG21.1.24. smooth macadam roads. The advantage they do give on a 40/50 HP. is that they reduce the tendency… | ||
| Scan087 | The effects of standard and balloon tyres on vehicle noise, vibration, and ride quality. | ||
| View original record | -3- EXPERIMENTAL REPORT. Expl. No. 4565 REF:Hsl/LG21.1.24. tyres they should be fitted to an old car which has developed the usual body and chassis rattle. It is then remarkable the effect they have… | ||
| Scan088 | The dispatch of ten Dunlop wheels of two different sizes to the Stores. | ||
| View original record | X4565 ROY. from Hs. c. to BP. c. to Mr. Chatwin. Hs1/LG23.1.24. We are sending into the Stores :- 5 Dunlop wheels fitted with 32 X 8" tyres. 5 " " " " 32 X 7" " Will Roy. please instruct the Stores… | ||
| Scan089 | Report on Balloon tyres and an agreement with Dunlop to supply smaller sets for 20 HP and 40/50 HP cars. | ||
| View original record | WOR. from Hs. Y4565 BALLOON TYRES. Y4565 / x980 Hs4/LG23.1.24. With reference to letter from Mr. Fuller, Springfield dated 7th. inst. attached. We sent a complete report on Balloon tyres (copy to CJ)… | ||
| Scan090 | Letter to the Dunlop Rubber Company regarding the supply of low-pressure tyres and the re-building of wheels. | ||
| View original record | Copy Ref: ROY3/HG30.1.24 Your Ref: EHB/C January 30th.1924 Messrs. The Dunlop Rubber Company Ltd. Broad Street Chambers, 41, Easy Row, BIRMINGHAM Dear Sirs:- ---- Low Pressure Tyres ---- We thank you… | ||
| Scan091 | Covering memo attaching a copy of a report regarding an experiment on Balloon Tires. | ||
| View original record | To H. // from BJ. c. to Hs. X4565 BJ/Py1/D25.2.24. Re: Balloon Tires - Experimental Report No. 4565. -------------------------------- We attach hereto copy of Oyll-E-21124 of January the 11th, which… | ||
| Scan092 | Letter discussing the performance and comparison of different experimental balloon tires. | ||
| View original record | Oy11-E-21124 January 11, 1924. Mr. Claude Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of Mr. Royce " " " " Mr. Hives) Dear Sir: Re: Balloon Tires - Experimental Rpt./4565 We wish… | ||
| Scan093 | Comparing the performance of American and English tires under different conditions. | ||
| View original record | -2- Oy11-E-21124 Taking the points of the Experimental report in order:- (1) Lack of side slip This is very marked with the American tires even though they have a tread much wider than the English… | ||
| Scan094 | The performance and disadvantages of balloon tires, including mileage and handling characteristics. | ||
| View original record | -3- (3) Snow and Ice (cont'd.) The balloon tires practically ignore such obstacles, we find, and it is on this fact that their greater safety in winter depends. (4) Mileage. The 32x6 would have run… | ||
| Scan095 | Comparison chart of dimensions for standard and balloon tires. | ||
| View original record | Automotive Industries February 28, 1924 44565 513 Dimensions of Standard and Balloon Tires (Drawn to scale to afford comparison between present popular sizes and balloon sizes recently approved by the… | ||
| Scan096 | Article from 'Automotive Industries' about the promising automotive market in the Philippine Islands for 1924. | ||
| View original record | 514 2dext Automotive Industries February 28, 1924 Philippine Islands Offer Good Market in 1924 Overstocks piled up in 1920-1921 have been disposed of and banks are in excellent condition. Sales vary… | ||
| Scan097 | From CJ to Hs regarding the adoption and experimentation of balloon tyres. | ||
| View original record | X4565 To Hs. from CJ. Balloon Tyres. CJ1/E11/3/24 U.S.A. Springfield are very anxious to adopt balloon tyres as so many American makers are adopting them. How far have you got on with your experiments… | ||
| Scan098 | Magazine advertisement for the Fiat 10/15 HP and other available models. | ||
| View original record | March 8th, 1924. COUNTRY LIFE. xliix. FIAT The Car of International Reputation. “The 10/15 h.p. Fiat needs no recommendation at this date” - The Scottish Field, February, 1924 2/3-Seater - £410 Doors… | ||
| Scan099 | Article from 'Country Life' magazine discussing dangerous driving laws and the pros and cons of 'Balloon' tyres. | ||
| View original record | COUNTRY LIFE. March 8th, 1924. what constitutes an offence in one police area does not practically do so in another. To quote a topical instance, it is only in Surrey that action is being taken… | ||
| Scan100 | Article discussing the pros, cons, and standardisation of balloon tyres, alongside advertisements for Daimler and Overland cars. | ||
| View original record | lii. COUNTRY LIFE. March 8th, 1924 on the hard side, then the balloon tyres might be expected to give no noticeable roll, but on a softly sprung car where rolling was only just avoided, or prevented… | ||
| Scan101 | Advertisement for the Dodge Brothers Saloon car from Country Life magazine. | ||
| View original record | March 8th, 1924. COUNTRY LIFE. ii. DODGE BROTHERS SALOON Dodge Brothers Saloon provides comfort comparable with that found in much more expensive closed cars. The 4' 7" rear springs; the improved… | ||
| Scan102 | Letter from F.H. Royce discussing balloon tyres, shackles, and collaboration with the American Co. | ||
| View original record | Y4565 COPY. As from CJ La Villa Mimosa, Le Canadel, Par Le Lavandou, Var. France. 11/3/24 Re American Co. My dear CJ., + Re balloon tyres, you will remember I recommended that we should go on testing… | ||
| Scan103 | The advantages and disadvantages of balloon tyres. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H.D. EXPERIMENTAL REPORT. Exptl. No. 4565 527 REF: Hs1/LG14.3.24. To CJ. from Hs. c. to R. RE. BALLOON TYRES. Messrs. Dunlop have now replaced the original balloon… | ||
| Scan104 | The lack of standardization for tyre and rim sizes among manufacturers and its impact on recommendations. | ||
| View original record | contd:- -2- have all adopted a different rim as standard and the tyres of each maker demands a special rim. In our opinion, until the tyre makers adopt a standard for rims and tyre sizes, it will be… | ||
| Scan105 | Requesting additional Dunlop Balloon tyres and wheels for a 10,000-mile car test in France. | ||
| View original record | To Roy. from Hs. c. to Wd. +4565 Hs3/LG19.5.24. TYRES. X4565 X3725 We propose running a 40/50 HP. car 10,000 miles in France fitted with Dunlop Balloon Tyres - 7" section. At the present time we have… | ||
| Scan106 | Arranging the supply of Dunlop balloon tyres and wheels for 40/50 HP cars for tests in France. | ||
| View original record | To ROY. from Hs. 4565 Hs1/LG30.5.24. BALLOON TYRES FOR 40/50 HP. CARS IN FRANCE. ✓ 4565 4941 We should like you to get to know from Messrs. Dunlop, the earliest possible time they can supply us with… | ||
| Scan107 | Instructing the stores to return 5 wheels fitted with 7' balloon tyres to the makers, Dunlop. | ||
| View original record | X4565 To Roy. from Hs. c. to BP. c. to Mr. Chatwin - Stores. hs8/LG3.6.24. We are sending into the Stores for despatch to Messrs. Dunlop. :- 5 Wheels fitted with 7" balloon tyres. Will you please… | ||
| Scan108 | Staff holidays, a request to borrow a car, and a proposal to test semi-balloon tyres. | ||
| View original record | tu565 To CJ. BJ. from R. c. to RG. HS. BY. R1/M3.6.24. WW. HOLIDAYS. X.4219 X.4565. The WW.staff will be away from June 7th. to 17th. inclusive. This is their Whitsun holiday, to which they are adding… | ||
| Scan109 | Arrangements with the Dunlop Company for rebuilding wheels and supplying balloon tyres for 40/50 HP cars in France. | ||
| View original record | Hs. from ROY. 44505 ROY6/MG4.6.24 Balloon Tyres for 40/50 HP. Cars in France The Dunlop Company write this morning that they are making special arrangements to re-build the 5 - 40/50 HP. Wheels we… | ||
| Scan110 | Requesting an update on sourcing a set of semi-balloon tyres complete with wheels for a Beatonson car. | ||
| View original record | 4565 TO Hs. c. to BK FROM PN. PN3/DN/3.6.24. Mr's Beatonson Car. I understand that you have heard from BJ. asking you to try and obtain a set of semi-Balloon tyres to be fitted to this car by the end… | ||
| Scan111 | Literature from Firestone Tyre & Rubber Company concerning their tests on balloon tyres. | ||
| View original record | S/W. (Hs) X 4565 Cx/Bly14/CM24.6.24. Herewith literature handed in the showroom by the Firestone Tyre & Rubber Company for us to look through. It chiefly concerns their own tests with baloon tyres and… | ||
| Scan112 | Widening of the Goshawk frame and track to accommodate 4-wheel brakes and semi-balloon tyres. | ||
| View original record | To CJ. from R. c. to BJ. PN. C. c. to H. BA. HS. c. to BY. X4585 RE. GOSHAWK FRAME AND WIDENING OF TRACK. In fitting 4-wheel brakes to this chassis it is intended to widen the track 2", partly on… | ||
| Scan113 | Summarizing opinions on semi-balloon tyres and recommending further testing. | ||
| View original record | X.4565 To CJ. BJ. RG. } BY. DA. E. } FROM R. HS. PN. } R2/M.7.24. RE. SEMI-BALLOON TYRES. X.4565. These tyres seem a doubtful improvement. Opinions may be summarised as follows :- (1) Dunlops seem… | ||
| Scan114 | Trial of Semi-Balloon Dunlop Tyres on a 20 HP car, noting their comfort, noisy treads, and heavy steering at low speeds. | ||
| View original record | 4865 PN15/DN/2.7.24. TO Hs. c. to BJ. FROM PN. 20 HP CARS WITH SEMI-BALLOON DUNLOP TYRES. We are trying a set of these tyres on R's Beatonson 20 HP and we find them very comfortable of course, a bit… | ||
| Scan115 | Technical issues of using semi-balloon type tyres, including clearances, steering lock, noise, and standardisation. | ||
| View original record | To FN. from Hs. c. to BJ. Y4565 Hs2/LG3.7.24. SEMI-BALLOON TYPE TYRES. With regard to the clearances with semi-balloon type tyres, the tyres are approximately the same dia. as the standard tyres. The… | ||
| Scan116 | The standardisation of semi-balloon type tyres and the required steering circle for 20 HP and 40/50 HP models. | ||
| View original record | 44565 PN15/DN/7.7.24. TO Hs FROM PN SEMI-BALLOON TYPE TYRES. With reference to Hs2/LG3.7.24 - Undoubtedly we must consider standardising this type of tyre as soon as possible. From day to day we have… | ||
| Scan117 | Letter discussing increased leverage for steering gear to accommodate balloon tires and proposing a new standard. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X 4565 Oy8-E-7724 July 7, 1924. Mr. E. W. Hives, Mickleover, Near Derby, England. (Personal) Dear Hives: You will remember my speaking to you about… | ||
| Scan118 | Internal query about the effect of balloon tyres on wheel circumference and car performance. | ||
| View original record | To Hs. from BJ. BJ25/H10.7.24. X4565 Re Balloon Tyres. With regard to semi-balloon and full balloon tyres, can you please tell us whether the circumference of the wheel is altered by either of these?… | ||
| Scan119 | Steering adjustments required for balloon tyres. | ||
| View original record | 44565 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby. England. 18th. July 1924. R-R America Inc., Springfield, Mass., America. To OY. from Hs. RE. STEERING WITH BALLOON TYRES. If you increase the section… | ||
| Scan120 | Internal query regarding the compatibility of balloon tyres with front-wheel brakes and potential clearance issues. | ||
| View original record | Y4565 To Hs. from BJ. BJ3/H24.7.24. BALLOON TYRES. Can you please let me know whether balloon tyres can be used with front wheel brakes? Do they affect the clearances, or any other parts? B.J. | ||
| Scan121 | Receipt of tyres, tubes, and wheels from the Dunlop Rubber Co. for a 40/50 HP chassis. | ||
| View original record | X4565 Hs. Wd/Dn5/BH7.8.24. Kindly note that we have received from the Dunlop Rubber Co. the following Tyres and Tubes for 40/50 HP. Chassis:- 8 - 34 x 7.30 Balloon Tyres with 8 Tubes for same, also 8… | ||
| Scan122 | Correspondence from Dunlop regarding the supply of wheels and tyres for a 10,000-mile test. | ||
| View original record | COPY. DUNLOP RUBBER COMPANY LIMITED. Fort Dunlop, Erdington, BIRMINGHAM. Technical Advisory Manager. WB/EP.7.18. Messrs. Rolls-Royce Ltd. DERBY. 1st August, 1924. Dear Sirs, Regarding your letter of… | ||
| Scan123 | Diagram illustrating steering lock clearances for 34' x 7.3' balloon tyres on a 44 P.K. model. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To Mr. Hives Order No. Customer's No. N.S. 44 P.K. BALLOON TYRES. 34" x 7.3" FULL LEFT LOCK. 1" CLEARANCE 2.6" CLEARANCE FULL RIGHT LOCK. 2.7" CLEARANCE 1.2" SPRING… | ||
| Scan124 | Wheel rim fouling with balloon tyres and lock circle diameters for a 44-PK car. | ||
| View original record | XC4585 Hs. from GHR. 3.9.24. BALLOON TYRES 34" X 7.5 44-PK CAR. Wheel rim fouls O.S. cross steering tube to extent of .15". STANDARD TYRES 33" X 5". Left-hand lock circle dia. = 47 ft. 6 ins.… | ||
| Scan125 | Request for a 'Brown Goshawk' (4-G-11) car to be delivered to the Russell Hotel. | ||
| View original record | X4505 To Hs. from R. COPY. X4565 X4219 R4/M6.9.24. I should like the Brown Goshawk (4-G-11) to be at the Russell Hotel by Friday morning, the 19th. inst., preferably fitted with low pressure tyres.… | ||
| Scan126 | Steering issues on Goshawks, relating to low-pressure tyres and potential causes. | ||
| View original record | H4565 To HS. from R. c. to CJ. BJ. PN. EP. 20 HP. STEERING. RE. LOW PRESSURE TYRES. R1/M8.9.24. X.4264 X.4565. We should be glad to know if low pressure tyres are better, or worse for steering… | ||
| Scan127 | Wheels for low-pressure balloon tyres fouling the cross steering levers on 40/50 HP cars with 4-wheel brakes. | ||
| View original record | To R. from Hs. c. to CJ. BJ. c. to E. DA. c. to RG. BY. c. to Wor. X4505 Hs6/LG23. 9.24. 40/50 HP. BALLOON TYRES. X4505 X9420 We find that the wheels suitable for the 7" Dunlop low pressure tyres for… | ||
| Scan128 | Requesting an order for a set of wheels and balloon tyres for the 20 HP model. | ||
| View original record | To BY. from Hs. X4565 Hs4/LG25.9.24. BALLOON TYRES FOR 20 HP. X3599 (crossed out) X4565 R. is anxious for us to push Balloon Tyres for the 20 HP. cars as standard, or for us to recommend them. The… | ||
| Scan129 | Notice regarding the re-building of Dunlop detachable wire wheels to accommodate cord balloon tyres. | ||
| View original record | X4565 [Text crossed out] Copy from Wd. c.to Sy/FAB. c.to HS. c.to Hy. c.to Hm. c.to AH. c.to Hs. Wd4/NWJ1.10.24. 40/50 HP. and 20 HP. Chassis. Dunlop Detachable Wire Wheels - Cord Balloon-Tyres.… | ||
| Scan130 | Invitation from the Dunlop Rubber Co. Ltd. to view the manufacturing and testing of balloon cord tyres. | ||
| View original record | Wor. from Wd. c.to By. c.to EP. c.to Ht. c.to Hs. c.to Bst. c.to Ms. Y4565 Wd5/WJ6.10.24. The Dunlop Rubber Co.Ltd. Balloon Cord Tyres. Colonel Matthew, Head of Chassis Makers' Division of the Dunlop… | ||
| Scan131 | Confirming a visit to the Dunlop Rubber Company to see the manufacture of Balloon Cord Tyres. | ||
| View original record | X4565 Wer. O.Ld. C.RY. C.Hn. c. Hs. EP5/H7.10.24. Dunlop Rubber Co. Ltd. Balloon Cord Tyres. I shall be pleased to take advantage of a visit to the Dunlop Rubber Company to see the manufacture of… | ||
| Scan132 | Dunlop Rubber Co. Ltd. Balloon Cord Tyres, requesting the names of departmental representatives. | ||
| View original record | X4565 To Df:- from Wor. " ED - " " " Hs. - " " [Struck through text] Wor10/M7/10/24. Dunlop Rubber Co.Ltd. Balloon Cord Tyres. ------------------ With reference to Wd's note Wd5/NJ6/10/24, of which… | ||
| Scan133 | Modifications to the cross steering lever for a 40/50 HP chassis fitted with balloon tyres. | ||
| View original record | X4565 Dr. c. Hs. BY/C5/H. 9.10.24. 40/50 HP. CHASSIS. BALLOON TYRES. With reference to Hs6/LG. 23.9.24. we send you herewith blueprint of a layout we have made showing how the end of the cross… | ||
| Scan134 | Forwarding a copy of a letter sent to the Dunlop Rubber Co. Ltd. for guidance. | ||
| View original record | X4585 Wer. from Wd. c.to Hs. c.to By/C. c.to EP. c.to Hy/NRC. c.to Ms. Wd16/NJ9.10.24. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Herewith copy of letter we have today addressed to… | ||
| Scan135 | Letter accepting an invitation from Dunlop Rubber Co. Ltd. to witness the manufacture and testing of Balloon Cord Tyres. | ||
| View original record | Wd15/MJ91024. 9th October, 1924. Messrs.The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Chassis Makers' Division. Dear Sirs, For the attention of Col.Matthew. We tender to you our most… | ||
| Scan136 | Suitability of the E.A.C. vehicle for balloon tyres and related testing. | ||
| View original record | To Hs. from BJ. BJ1/H16.10.24. E.A.C. Can you let us know, please, whether the E.A.C. is being designed to be suitable to carry balloon tyres? We feel fairly confident that balloon tyres will come… | ||
| Scan137 | Secret memo discussing the design and testing challenges of fitting balloon tyres to the EAC.11 model. | ||
| View original record | 44565 To BJ. from Hs. S E C R E T. Hs5/LG17.10.24. 44565 48820 48430 E.A.C.11. - BALLOON TYRES. The EAC.11 will be designed suitable for fitting balloon tyres. The steering on the EAC.11. is lower… | ||
| Scan138 | Continued discussion on the wheels and tyres for the 20HP car. | ||
| View original record | contd :- -2- wheels and tyres for the 20 HP. in which the section of the tyre has been slightly reduced from those which have been on Mr. Royce's 20 HP. car. Hs. | ||
| Scan139 | Testing of balloon tyres and a revised axle for 10,000 miles in France before use. | ||
| View original record | X4565 To Hs. from CJ CJ4/E21/10/24 Obviously the balloon tyres referred to in your memo. Hs3/LG20/10/24 should not be used until a chassis bearing them and having the revised axle has been run 10,000… | ||
| Scan140 | The suitability and faults of the Dunlop Jack and Balloon Tyres for 20 HP cars. | ||
| View original record | To BY. from Hs. c. to EP. c. to Wor. X4565 Hs/TMW1/LG23.10.24. 20 HP. X4565 DUNLOP JACK AND BALLOON TYRES. X.4080 The aluminium base supplied to us with the above Jack is not required for 20 HP. cars.… | ||
| Scan141 | Proposed address by The Dunlop Rubber Co. Ltd. on the subject of Balloon Tyres. | ||
| View original record | X4565 F.R. By. from Wd. c.to Hs. c.to EP. c.to Hm. Wd13/NJ10.11.24. The Dunlop Rubber Co.Ltd. Mr.Bond, Technical Advisory Manager of the Dunlop Rubber Co.Ltd. and Reduced, has written confirming a… | ||
| Scan142 | Link between high-speed steering wobble and the use of balloon tyres. | ||
| View original record | W/S - C. c. Hr. c. BY. c. Hs. C4565 Hm/NRC5/EW29.11.24. Re Balloon Tyres. With further reference to your C16/C19.9.24. enclosing draft of standard letter (approved by CJ.) to customers who enquire… | ||
| Scan143 | Performance of balloon tyres and associated steering wobble issues on various car models. | ||
| View original record | To Hs. from R. c. to CJ. BJ. 44585 R3/M29.11.24. BALLOON TYRES. X.4565 X.457 On the 20 HP. balloon tyres have, I think, been a decided improvement, and though I have had this car very many times… | ||
| Scan144 | Letter to Dunlop requesting correct inner tubes for low pressure tyres on a 20 HP car. | ||
| View original record | X4568 HS2/LG. 1st. Dec. 1924. Messrs. Dunlop, Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Paull. With reference to the low pressure tyres for the 20 HP. car which you sent… | ||
| Scan145 | Correspondence from Dunlop regarding the supply of inner tubes with shorter valves for a 20 HP car. | ||
| View original record | Telegraphic Address. "DUNLOPS, BIRMINGHAM" Telephone No. BIRMINGHAM CENTRAL 4108. PRIVATE BRANCH EXCHANGE 25 LINES Registered Offices. DUNLOP HOUSE, 1, ALBANY ST. LONDON, N.W.1. BY APPOINTMENT DUNLOP… | ||
| Scan146 | Returning 5 Dunlop inner tubes for 20 HP balloon tyres to the makers for replacement. | ||
| View original record | To EP. from Hs. c. to Roy. c. to Mr. Chatwin. X4565 Hs5/LG15.12.24. We are sending into the Stores - 5 Dunlop Inner Tubes suitable for 20 HP. balloon tyres. These are to be returned to the makers.… | ||
| Scan147 | Five Dunlop Inner Tubes for 20 HP Balloon Tyres to be sent to Dunlop Rubber Co Ltd. | ||
| View original record | 46565 c.to D/BR. c.to Hs. ROY/GEA5/K17.12.24. Please despatch to Messrs. Dunlop Rubber Co Ltd., Fort Dunlop Erdington, Birmingham - 5 Dunlop Inner Tubes, for 20 HP.Balloon Tyres. These have already… | ||
| Scan148 | Urgent need for test results on different sizes of balloon tyres. | ||
| View original record | X4565 To-By. from BJ. Copies to Hs. Hm. BJ11/H23.12.24. BALLOON TYRES. This matter was discussed at the Sales Conference this afternoon, and we understand the position is as follows:- 1. Tests have… | ||
| Scan149 | The receipt of Dunlop wire wheels with balloon tyres for experimental purposes on chassis 22-EU and 45-EU. | ||
| View original record | X4565 My/Chat. (Chat is struck through) c. to Experimental Dept. Wd/AW10/W24.12.24. We received from the Dunlop Rim & Wheel Co Ltd., on the 23rd inst., 12 - 33 x 6.75 Wire Wheels fitted with Balloon… | ||
| Scan150 | Testing of new Dunlop balloon tyres and the policy for customer enquiries. | ||
| View original record | X4565 BJ C. Hs. C. Sr. C. Hn. BY16/H. 29.12.24. BALLOON TYRES. ----------------- Referring to BJll/H.23.12.24. the Experimental Dept. have only just received the new Dunlop wheels fitted with 33 x… | ||
| Scan151 | The performance and limitations of a Dunlop jack designed for balloon tyres. | ||
| View original record | 4865 Dec. 1924. DUNLOP JACK FOR BALLOON TYRES. X.4865 X.4124 Lowest position of Jack - HEIGHT. At present. Previously. 5 11/16" 6 3/16" 1st. stage of Jack. 9 9/16" 10 7/16" 2nd. stage " " 11 5/8" 13… | ||
| Scan152 | Requesting an update on the progress of tests for Dunlop Balloon Tyres on the 40/50 HP model. | ||
| View original record | S/W RT (crossed out) Afs 14565 C5/C26.1.25. Dunlop Balloon Tyres. ------ We shall be glad to know how far you have got with the tests of the 6.75 tyres on the 40/50 h.p. C. | ||
| Scan153 | The steering trouble experienced when fitting Dunlop balloon tyres. | ||
| View original record | X4565 W/S. C. from Hs. Hs6/LG28.1.25. RE. DUNLOP BALLOON TYRES. We have nothing yet to report on the 6.75 tyres. The trouble which is manifest on the steering when balloon tyres are fitted is a… | ||
| Scan154 | Letter from Dunlop Rubber Co. Ltd. requesting performance data on two sets of tyres. | ||
| View original record | Telegraphic Address: "DUNLOPS, BIRMINGHAM." Telephone No. CENTRAL 4108. BY APPOINTMENT Registered Offices: DUNLOP HOUSE, 1, ALBANY ST. LONDON, N.W.1. DUNLOP RUBBER CO LTD Founders of the Pneumatic… | ||
| Scan155 | Continuation sheet from Dunlop Rubber Co. Ltd. concerning general comments on tyres. | ||
| View original record | A 121 D. R. CO. LTD. CONTINUATION SHEET No. 19 8. General comments on tyres. Thanking you in anticipation. We are, Yours faithfully, FOR THE DUNLOP RUBBER CO.LTD., AW J Hyde S. Development Department.… | ||
| Scan156 | Tyre suitability and road vibrations on a 40/50 chassis. | ||
| View original record | Hs. C. Hm. X4565 BY15/W.5.3.25. 40/50 CHASSIS. 33 x 6.75 BALLOON TYRES. R. in a memo' dealing with Mr. Minchin's car, addressed to Hm., says " body errors and road vibrations are much more glaring… | ||
| Scan157 | Fitting of balloon tyres to Mr. Royce's All-Weather Torpedo, noting safety concerns for the front wheels. | ||
| View original record | Y4565 TO BY. FROM DA/EV. Copy to - HS. DA/EV1/M20.5.25. re. ALL-WEATHER TORPEDO FOR Mr. ROYCE. We thank you for your BY/C9/H16525. We wish to fit balloon tyres to both the front and rear wheels of… | ||
| Scan158 | Issuance of instructions for balloon tyres on 20-HP and 40/50 HP models. | ||
| View original record | BY, Hs. c.c.BJ. V4565 EP/Thn6/H21.5.25. re. Balloon Tyres for 20-HP and 40/50 HP. We shall be glad to know whether the time is yet ripe for us to issue instructions to the Depots with regard to… | ||
| Scan159 | The unsuitability of balloon tyres for 20 HP and 40/50 HP chassis with FWB. | ||
| View original record | X4565 EP. c. Hs. C. J. BY5/H. 27.5.25. RE BALLOON TYRES FOR 20 HP. & 40/50 HP. CHASSIS. ----------------------------------------------------- In reply to EP/Thn6/H. 21.5.25. the position is still the… | ||
| Scan160 | Letter from Dunlop requesting a performance report on tyres fitted to Mr. Royce's car. | ||
| View original record | Telegraphic Address. "DUNLOPS, BIRMINGHAM" Telephone No. BIRMINGHAM CENTRAL 4108. PRIVATE BRANCH EXCHANGE 25 LINES X4565 Registered Offices, DUNLOP HOUSE, 1. ALBANY ST. LONDON, N.W.1. BY APPOINTMENT… | ||
| Scan161 | Requesting the procurement of six balloon covers and tyres. | ||
| View original record | X4565 Roy. from Hs. Hs11/LG2.7.25. Will you please obtain for us :- 6 Balloon covers and tyres 21 X 5.25. Hs. (already received) | ||
| Scan162 | Vehicle handling improvements by adjusting front shock absorbers when using new semi-balloon tyres. | ||
| View original record | +4565 SECRET. To CJ. from R. c. to HS. EP. c. to PN. CWB. c. to Hm. E3/M24. 7. 25. INDIA CHASSIS. X.5770 | ||
| Scan163 | Alarming report on high speed steering wobbles, comparing the New Phantom with the Silver Ghost. | ||
| View original record | To CJ PN Hs. } FROM R. RE. STEERING. X. 8430 X. 457 X.4565 PN's memo. received this morning is very alarming. I do not think however it can be quite as bad as it appears, otherwise we should have had… | ||
| Scan164 | Testing two 20 HP cars, focusing on balloon tyres, damping, and steering performance. | ||
| View original record | contd :- -2- wobble, and therefore the car may give inconsistent results. Just before the holidays we tested two 20 HP. cars one with balloon tyres, and one without, and it was thought that the… | ||
| Scan165 | Potential improvements and modifications to a vehicle's steering system. | ||
| View original record | To Hs. from R. c. to CJ. PN. c. to BY. Hm. EP. X4565 RL/M18.8.25. STEERING. X.8430 X.457 X.4565 We shall be pleased to see you at any time you think it profitable and convenient to come to WW. We are… | ||
| Scan166 | Technical memorandum discussing high speed steering wobble and potential modifications to the steering arm and dampers. | ||
| View original record | contd :- -2- modification to the R.H. cross steering arm which will require another ball. Particulars of this will be sent you today, and the designs for the hydraulic damper will be sent this week.… | ||
| Scan167 | Mitigating high-speed wobbles through weight redistribution, tyre balancing, and a new fluid damper design for the 40/50 car. | ||
| View original record | contd :- -3- and possibly the weight of the front of the car on a given inflated tyre may affect the time and intensity, and the possibility of these high speed wobbles building up. You will remember… | ||
| Scan168 | Handling issues of the New Phantom compared to the Silver Ghost, focusing on weight, chassis flexibility, steering, and tyres. | ||
| View original record | contd :- -4- tube and the damper lever. We cannot understand why New Phantom is worse than Silver Ghost, but naturally it is (1) somewhat heavier forward, (2) it is more top heavy forward which may be… | ||
| Scan169 | Letter from F.H. Royce regarding the issue of high-speed wobbles in relation to low-pressure tyres and wheel balance. | ||
| View original record | Copy to CJ. BJ. HS. PN. BY. EP. "ELMSTEAD" WEST WITTERING, CHICHESTER. Senor C. de Salamanca, MADRID. 21st. Aug. 1925. My dear Carlos, STEERING. X.457 X.8430 X.4565 Regarding the high speed wobbles… | ||
| Scan170 | Letter to Dunlop Rubber Co. seeking a mathematical explanation for high-speed steering wobbles. | ||
| View original record | +4565 Hs/Rml/LG. Messrs.The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. +457 21st. Aug. 1925. Dear Sirs, For the attention of Mr. Healey, Development Dept. HIGH SPEED STEERING WOBBLES.… | ||
| Scan171 | Conclusion on the cause of wheel wobbles being an out-of-balance force from insufficiently accurate wheel balancing. | ||
| View original record | contd :- -2- We conclude that the reason why we have always measured wobbles whose period coincides with that of the road wheel is because we cannot balance the wheels sufficiently accurately and… | ||
| Scan172 | From 'R.' detailing modifications required for the Goshawk I chassis, including smaller wheels and specific tyres. | ||
| View original record | Rs. from R. +4565 R5/M15.9.25. GOSHAWK 1. X.3481 X.4263 x.4565 With reference to Goshawk 1. I want this little chassis fitting up rather differently, which includes smaller dia. of wheels, and I want… | ||
| Scan173 | Request from the Dunlop Company for mileage and performance feedback on tyres supplied for testing. | ||
| View original record | Hs. from ROY. 74565 ROY3/MG23.9.25. ------------------ The Dunlop Company ask:- "We shall be glad to know the mileage completed by the "4 - 35 x 6.75 Triple Block Pattern Tread Balloon Covers… | ||
| Scan174 | Tests conducted to understand high-speed steering wobbles caused by tyres running out of true. | ||
| View original record | R.R. 493a (50 H) (D.D. 21. 12-6-25) J.H.D. Expt. No. X4565 REF: Hs/Rm/LS16.9.25. EXPERIMENTAL REPORT. To R. from Hs/Rm. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to WOr. HIGH SPEED STEERING WOBBLES.… | ||
| Scan175 | Follow-up memo from ROY chasing a reply regarding performance tests of Dunlop tyres supplied on preferential terms. | ||
| View original record | Hs. from ROY. +4565 ROY8/MG6.10.25. Tyres Can you now kindly let us have a reply to our communication ROY3/MG23.9.25, copy attached? The Dunlop Company supplied these Tyres on preferential terms, on… | ||
| Scan176 | Request from the Dunlop Company for mileage and feedback on tested Triple Block Pattern Tread Balloon Covers. | ||
| View original record | Copy Hs. from ROY. ROY3/MG23.9.25. The Dunlop Company ask:- "We shall be glad to know the mileage completed by the "4 - 35 x 6.75 Triple Block Pattern Tread Balloon Covers "supplied for test in the… | ||
| Scan177 | Letter discussing steering difficulties with balloon tyres at high speeds, comparing experiences with Nash and Pierce Arrow cars. | ||
| View original record | S/W. Hs. Re: Messrs Wiklunds - and Balloon Tyres. In reply to a circular letter sent to Traders recently, prohibiting the use of these on the front wheels of XX Chassis with F.W.B's, the above wrote… | ||
| Scan178 | Letter from Aktiebolaget A. Wiklunds discussing experiences with balloon tyres on NASH and PIERCE-ARROW cars. | ||
| View original record | AKTIEBOLAGET A. WIKLUNDS, MASKIN & VELOCIPEDFABRIK, STOCKHOLM, SWEDEN. 5th October, 1925. Messrs Rolls-Royce, Ltd., London. Dear Sirs, Re: Balloon Tyres. Replying to your esteemed fabour of the 28th… | ||
| Scan179 | The effects of fitting balloon tyres to two new Phantom cars with wagonette bodies for shooting purposes in Bharatpur. | ||
| View original record | To. Hs. from B.J. X4565 BJ10/H23.10.25. Re Cars for Bharatpur. Rolls-Royce, Bombay, have telegraphed as follows:- "Bharatpur requires balloon tyres all wheels on both Phantoms Customer insists… | ||
| Scan180 | The technical reasons against fitting low pressure balloon tyres to the New Phantom cars due to high-speed wobbles. | ||
| View original record | R.R. 493a (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 4565 REF Hs1/LG26.10.25. To BJ. from Hs. BALLOON TYRES - HIGH SPEED WOBBLES. 457 We cannot agree to the fitting of low… | ||
| Scan181 | The effects of high and low-pressure tyres on vehicle wobble. | ||
| View original record | R.R. 493a (50 H) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF:Hsl/LG26.10.25. deflected. In other words, the balloon tyre absorbs very little energy when tramping is taking place,… | ||
| Scan182 | Use of Dunlop semi-balloon tyres on a 'New Phantom' and the associated risk of steering wobble. | ||
| View original record | X4565 PN4/DN14.1.26. TO Hs FROM PN Lord Montagu tells me he is proposing to run down to the South of France with his "New Phantom" fitted specially by the Dunlop Co. with semi-balloon tyres - front… | ||
| Scan183 | Recommendation against fitting semi balloon tyres to Lord Montagu's Phantom due to the risk of steering wobble. | ||
| View original record | To PN. from Hs/Rn. Hs/Rn2/LG1 8.1.26. X4565 PN4/DN14.1.26. 28770 With reference to the fitting of semi balloon tyres on to the Phantom belonging to Lord Montagu. We recommend that we do not depart… | ||
| Scan184 | From ROY to Hs. about a follow-up query from Dunlop regarding triple stud balloon tyres. | ||
| View original record | Hs. from ROY. X4565 ROY2/MG30.1.26 Triple Stud Covers - The Dunlop Rubber Co.Ltd Referring to my Memos. ROY11/MG20.11.25, and ROY3/MG5.12.25, the Dunlop Company have written again asking if we can now… | ||
| Scan185 | Investigation into front wheel wobble, the effect of toe-in, and issues with front wheel brakes. | ||
| View original record | To R. from Hs. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. x4565 Hs2/LG22. 2.26. Y457 Y4565 RE. FRONT WHEEL WOBBLE. With reference to the attached note from OY. on wheel wobble. We have… | ||
| Scan186 | Research, observations, and theories regarding front wheel wobble. | ||
| View original record | To Hs. from OY. C O P Y. OY2-E-21026. RE. FRONT WHEEL WOBBLE. Mr. John Warren Watson of the "Stabilator" Co. mentioned some interesting points in experimental work he is doing in connection with wheel… | ||
| Scan187 | Improvements to the Phantom suspension, focusing on spring flexibility, shock dampers, and tyre pressure. | ||
| View original record | DA} To BY. He.} FROM R. LE CANADEL. c. to CJ. BJ. Wor. c. to RG. E. X4565 R2/M25.2.26. PHANTOM SUSPENSION. X. 8410 X. 4565 X. 8520 X. 235 Mr. Johnson remarks that the Phantom rides worse than the… | ||
| Scan188 | Technical comparison of the New Phantom and Silver Ghost models, focusing on road noise, suspension, and performance. | ||
| View original record | contd :- -2- but bad management of rear road spring stiffness and highly pumped tyres will ruin all, and spoil everything that can be done. Body noises of all kinds are reduced and the life of bodies… | ||
| Scan189 | Effectiveness of hydraulic shock dampers at reducing steering wobble and proposing their fitting for a 10,000-mile test. | ||
| View original record | To DA. } FROM R. BY. HS. } LE CANADEL. c. to CJ. BJ. Wor. E. RG. X4565 R2/M26.2.26. HYDRAULIC SHOCK DAMPERS. X.235 X.457 It is indeed good news that the above are so effective to reduce high speed… | ||
| Scan190 | Pressing for the adoption of hydraulic shock dampers, semi-balloon tyres, and a lighter front axle for Phantom & Goshawk models. | ||
| View original record | To Hs. } FROM R. BY. } LE CANADEL. DA. } c. to CJ. BJ. Wor. X4565 R1/M27.2.26. RE. PHANTOM & GOSHAWK LOW PRESSURE TYRES. X457 X.1665 X.5410 X.235 X.3410 I am pressing for the adoption of the… | ||
| Scan191 | Letter to Dunlop inquiring about tyre drawings and specifications to address high-speed wobble issues. | ||
| View original record | 44565 Expl: Dept: HS/Rm2/LG. 13th. Mar. 1926. Messrs. Dunlop, Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Paull. Development Superintendent. [STAMP: ANSON 1804] We thank… | ||
| Scan192 | Visit to Messrs. Dunlop to discuss their triple stud tread tyres, focusing on noise, non-skid properties, and wear. | ||
| View original record | Exptl: Report. Exptl: No. 44505 Hs/RnS/LG15. 5. 26. To R. from Hs/Rn. c. to CJ. BJ. c. to RG. E. c. to DA. BY. c. to Wor. TYRES. +3809 We recently visited Messrs. Dunlop and discussed with Mr. Faull… | ||
| Scan193 | Tyre types, wear patterns, comfort, and recommendations for 40/50 HP and 20 HP models. | ||
| View original record | contd :- -2- it was apparent that the triple stud is a flatter tread, and so the edges get worn almost as quickly as the centre. The traction tread edges, however, do not normally do very much work… | ||
| Scan194 | Tyre performance focusing on wobble tests and comparisons between different tyre constructions. | ||
| View original record | contd :- -3- | Well base tyres. | 40/50 HP. | 20 HP. | |---------------------------------|-------------------|-------------------| | Semi-balloon size. | 6.75 X 33 | 6" X 33 | | Oversize medium… | ||
| Scan195 | Copy of recommended tyre pressures from Dunlop Co. for various chassis and tyre types. | ||
| View original record | COPY. Y4585 X3538 Y4565 Hs. from BY. BY5/H16.3.26. I give below copy of tyre pressures as now recommended by the Dunlop Co. for high pressure tyres, medium pressures tyres, and low pressure or balloon… | ||
| Scan196 | Letter from Dunlop Rubber Co Ltd discussing tyre ply construction for various vehicles, including the King's car. | ||
| View original record | Telegraphic Address. "DUNLOPS, BIRMINGHAM." Telephone No. BIRMINGHAM CENTRAL 4108. PRIVATE BRANCH EXCHANGE. 25 LINES. Registered Offices, DUNLOP HOUSE, 1, ALBANY ST., LONDON, N.W. 1. BY APPOINTMENT.… | ||
| Scan197 | Benefits of low-pressure tyres over high-pressure tyres and proposing a specific setup for better ride quality. | ||
| View original record | To Hs. DA. BY. } FROM R. LE CANADEL. c. to CJ. BJ. c. to E. RG. V4865 R1/M24.3.26. PHANTOM & INDIA TYRES - re. X.4565 X.8820 Hs/Rm/15.3.26. X.3809 X.5820 X.8410 I have said previously that we shall be… | ||
| Scan198 | Experimental tests on different tyre types, focusing on performance issues like high-speed wobbles, noise, and skidding. | ||
| View original record | To C.J. from Hs. c. to B.J. X4565 Hsl/LG25.3.26 X457 X1583 Referring to the telephone message which we have received from you today. From experimental tests, the oversize medium tyres on the front… | ||
| Scan199 | Low-pressure tyre issues on the Phantom model and considerations for alternative oils. | ||
| View original record | contd :- -2- conjunction with DA. Hdy! CWB. EP. have proved that the fitting of low pressure tyres does not overcome the particular complaint which we are at present investigating on the Phantom. This… | ||
| Scan200 | Comparison of the composition and availability of Prices and Wakefields brand oils, noting their use in customer and company cars. | ||
| View original record | contd :- -3- standardisation sheet, we are sending it on to you and BJ. for signature. The difference between Prices and Wakefields oil is that Prices contains a 10% mixture of sperm and lard oil, and… | ||
| Scan201 | Recommendations for tyre configurations and a query about the standardisation of oils. | ||
| View original record | CJ1/E25/3/26 X4565 N583 To Hs. from CJ. I telephoned you this morning as follows, asking you to discuss it the matter with CWB if he is still at Derby: R. is again pressing that we should prepare at… | ||
| Scan202 | Standardization of fitting semi-low pressure tyres to the 20 HP chassis. | ||
| View original record | lts S/W Y4565 C7/C31.3.26. Re Low Pressure Tyres on 20 h.p. ---- As we have two or three customers who are asking for low pressure tyres, and as we understand that you agree at Derby that there is no… | ||
| Scan203 | High-speed steering wobble on car 7-EX with medium pressure tyres. | ||
| View original record | To Hs. & DA. from R. at Le Canadel. c. to CJ. BJ. X4565 R2/M2.4.26. RE. HIGH SPEED STEERING WOBBLES. X.457 X.235 7-EX MEDIUM PRESSURE TYRES. X.4565 X.8820 On car 7-EX we find we get these at the… | ||
| Scan204 | Comparison diagram showing profiles, dimensions, and load ratings for four different tyres. | ||
| View original record | Handwritten: X4565, (X3809) Top Left Diagram: Dimensions: 6.64", 35" DIA, 66.17" CIRC., 21.063" DIA 16.15" EFFECTIVE RADIUS LOAD 15 1/2 CWTS AT 37 LBS/SQ. INCH. 17 3/8 CWTS AT 41 LBS/SQ. INCH 33" x… | ||
| Scan205 | The condition and mileage of eight Dunlop tyres used during a 9000-mile test on car I2 EX - EAC VIII. | ||
| View original record | X4565 DUNLOP EXTRA HEAVY CORD BALLOON T/RES --------------------------------------- 33 x 6" FOR 21" RIM . ------------------------ USED ON ------- I2 EX - EAC VIII. DURING THE 9000 MILES TEST.… | ||
| Scan206 | The return of Dunlop medium pressure tyres to the manufacturer for examination following a 10,000-mile test in France. | ||
| View original record | Hs. from Wd. X4565 Wd6/NJ11.6.26. Dunlop Medium Pressure Tyres used on tests in France. On 20th ult. you asked me to ascertain from the Dunlop Co. whether they would like us to return to them for… | ||
| Scan207 | Internal order request for six Dunlop medium pressure traction tread tyres. | ||
| View original record | To Wd/Ms. from Hs. X4565 Hs1/LG18.6.26. Please order from Messrs. Dunlops :- 6 complete medium pressure tyres - 6.75" to suit 21" rims. These should be the traction tread tyre. If there is going to be… | ||
| Scan208 | The testing of 33 x 6.75 Balloon Tyres and correspondence with the Dunlop Co. | ||
| View original record | Hs. K4565 ROY/GEA7/K28.6.26. With reference to the set of 33 x 6.75 Balloon Tyres requisitioned for test by your department. We send you herewith copy of letter dated 26th inst. received from the… | ||
| Scan209 | Letter to Dunlop Rubber Co Ltd. regarding an order for tyres and requesting a delivery date. | ||
| View original record | ROY/GEA6/K28.6.26. 28th June 1926. Messrs. The Dunlop Rubber Co Ltd., Fort Dunlop Erdington. Birmingham, Dear Sirs, Order No.56239 of 21.6.26. We thank you for your letter JSM.T Manufacturers… | ||
| Scan210 | Letter from The Dunlop Rubber Co. confirming a tyre order and discussing tyre standardization on the 40/50 HP model. | ||
| View original record | Copy of letter received from The Dunlop Rubber Co. Manufacturers JSM.T. June 26th 1926. Dear Sirs, ORDER NO.56239. 21.6.26. We thank you for your favour of the 25th inst. confirming the instructions… | ||
| Scan211 | The non-recommendation of Dunlop triple studded tyres for chassis 101-TC. | ||
| View original record | X4565 D/EP/HDS/CD30.6.26 Re - Chassis 101-TC With reference to the 3 Dunlop balloon triple studded covers and balloon tubes size 33 x 6.750 received from Dunlops as per G/R.22007 dated 20/4/26,… | ||
| Scan212 | Comparison of road shocks and ride comfort between standard high-pressure tyres and 6.75' Dunlop balloon tyres. | ||
| View original record | Y4565 Hs. from Rn. Hs/Rn4/LG18.8.26. ROAD SHOCKS AND TYRE SIZE. As a result of the numerous opportunities of comparison which we have been able to make between the standard tyres and the 6.75" Dunlop… | ||
| Scan213 | Phantom steering issues, attributing the cause to balloon tyres and suggesting a hydraulic damper. | ||
| View original record | To Hs. from R. c. to BJ. Wor. c. to BY. DA. X4565 RL/M:8.8.25. RE. PHANTOM STEERING. X.8430 X.8420 X.7430 X.235 X.4565 I cannot see why the new axle can have any detrimental effect on the steering of… | ||
| Scan214 | Recommending the trial and use of low pressure tyres to maintain competitiveness against Bentley, Daimler, and Panhard. | ||
| View original record | To PN. from Hs. c. to BJ. X4565 Hs4/LG31.8.26. LARGE SECTION TYRES. X4565 You will see by our memo. Hs3/LG31.8.26 we are recommending the use of low pressure tyres. We should therefore like to fit up… | ||
| Scan215 | Advantages of fitting large section tyres to improve vehicle suspension and reliability. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to E. Da. c. to RG. BY. c. to PN. CWB. COPY X4565 Hs3/LG31.8.26 LARGE SECTION TYRES. The Phantom suspension is No.1 on the list of Sales complaints. By fitting the… | ||
| Scan216 | Dampers, low-pressure tyres, wobbles, and steering effort, including tyre compatibility with Dunlop rims. | ||
| View original record | Contd. -2- Hs3/LG31.8.26. The dampers counterbalance the increased tendency for wobbles with the lower pressures, and the improved pivot arrangement on the lightened axle reduces the effort required… | ||
| Scan217 | Recommending the trial of large section, low-pressure tyres, citing their use by competitors. | ||
| View original record | To PN. from Hs. c. to BJ. X4565 Hs4/LG31.8.26. LARGE SECTION TYRES. You will see by our memo. Hs3/LG31.8.26 we are recommending the use of low pressure tyres. We should therefore like to fit up 8-EX… | ||
| Scan218 | Preliminary steering test results for the 12-EX car, focusing on damper settings and wobble reduction. | ||
| View original record | To R. from Hs/Rm. c. to BJ. Wor. c. to E. Da. c. to BY. H4865 Hs/Rml/LG1.9.26. 12-EX CAR - STEERING TESTS. X7430 X457 Below are preliminary tests received from Hs/Rm. in France on the steering of… | ||
| Scan219 | Tyre performance, comparing balloon and high-pressure tyres, and analysing the effects of pressure on steering wobble and selectiveness. | ||
| View original record | contd :- -2- noted that though we have some 6.75" tyres worn to the canvas and very uneven, they will not wobble even with no dampers. Another point of interest is that unless we add a lot of friction… | ||
| Scan220 | Vehicle suspension issues, including insufficient damping, pivot lean, and the effect of oil viscosity. | ||
| View original record | contd :- -3- wheel increase. Possibly it is the effect they have on the main pivot lean as 1" on the rear = 1/2° pivot lean approximately. We are more or less convinced that a large proportion of the… | ||
| Scan221 | Dangers of wheel wobble associated with larger section tyres and the introduction of front brakes. | ||
| View original record | Hs. X 4565 To Hs. from BJ. c. to H. c. to Wor. c. to EV. c. to PM. c. to CWB. LARGE SECTION TYRES. I think we are all in accord with that the sooner we can adopt a larger tyre and lower pressure than… | ||
| Scan222 | Suggestion to fit a car with larger section, low pressure tyres and arranging for testing in Paris. | ||
| View original record | -2- BJS/D2.9.26. In another memorandum you have suggested that this car should be fitted with larger section, low pressure tyres. We think this would be very advantageous and immediately PM. has… | ||
| Scan223 | Safety risks of wheel wobble at high speeds and plans for testing solutions. | ||
| View original record | To Hs. from BJ. (COPY) c. to R. c. to Wor. c. to EV. c. to PN. c. to CWB. LARGE SECTION TYRES. I think we are all in accord that the sooner we can adopt a larger tyre and lower pressure than we are… | ||
| Scan224 | Fitting a car with larger section, low-pressure tyres for testing in Paris. | ||
| View original record | Contd. -2- BJB/D2.9.26. In another memorandum you have suggested that this car should be fitted with larger section, low pressure tyres. We think this would be very advantageous and immediately FN.… | ||
| Scan225 | Advantages and disadvantages of fitting low-pressure tyres to Phantom & Goshawk chassis. | ||
| View original record | To BY. } FROM R. BJ. } c. to Wor. Hs. CWB. c. to PN. DA. E. +4565 R3/M3.9.26. PHANTOM & GOSHAWK LOW PRESSURE TYRES. X.4565 X.8820 X.8430 X.5820 Regarding Hs. memo, concerning the above, I agree that… | ||
| Scan226 | Steering modifications and the adoption of low-pressure tyres for all cars. | ||
| View original record | To Hs. & BY. from R. c.c. to BJ. Wor. OY. c.c. to PN. CWB. EP. X4565 R2/M3.9.26. STEERING, AND LOW PRESSURE TYRES. X. 8430 X. 4565 X. 5430 I understand it is now agreed by Sales and the RR. engineers… | ||
| Scan227 | Correspondence on low pressure tyres and changing wheels on experimental cars 12-EX and 8-EX. | ||
| View original record | X4565 Expl. Office, Messrs. Rolls-Royce Ltd., Derby. HsL/T4.9.26. Mr. W.A. Robotham, Hotel de France, Chateauroux, Indre, France. Rm. from Hs. We attach herewith some correspondence on low pressure… | ||
| Scan228 | The return of incorrectly supplied tyres. | ||
| View original record | X4565 To Wd/Ms from Hs/HP. Hs/HP1/BE. 6.9.26. With reference to Hsl/LG318.26. in which we ask you to order:- 4 Covers 6.75" section suitable for 21" rims. These tyres have arrived but are incorrect… | ||
| Scan229 | Return of 4 incorrect covers measuring 33' x 6.00'. | ||
| View original record | +4585 To Mt(Stores) from Hs/HP. C. Wd/MS. Hs/HP2/BE. 6.9.26. We are returning 4 Covers 33" x 6.00" as they are incorrect to order. We have seen the O.O. on this matter. No doubt you will obtain their… | ||
| Scan230 | Incorrect tyre delivery from Dunlop and the proposed replacement alternatives. | ||
| View original record | He. from ROY. 44565 ROY5/MG7.9.26 Your Requisition Hal/LG31.8.26 6.75" Tyres for 21" Rims The Dunlop Company delivered four 6" Medium Pressure Tyres for 21" Rims against this order. This was an error… | ||
| Scan231 | From Hs. to ROY. regarding a supply issue with Dunlop for 6.75' traction tread tyres. | ||
| View original record | To ROY. from Hs. X4565 Hs1/LGB.9.26. 6.75" TYRES FOR 21" RIMS. With reference to our order for 4 6.75" tyres suitable for 21" rims. These tyres must be traction tread type. It has been agreed by… | ||
| Scan232 | Supply issue with Dunlop for 6.75' traction tread tyres for 21' rims. | ||
| View original record | To ROY. from Hs. X4565 Hsl/LG3.9.26. 6.75" TYRES FOR 21" RIMS. With reference to our order for 4 6.75" tyres suitable for 21" rims. These tyres must be traction tread type. It has been agreed by… | ||
| Scan233 | On testing 6.75 inch balloon tyres, comparing their performance regarding high-speed wobble and comfort against older 6.00 inch tyres. | ||
| View original record | To B.J. from Hs. X4565 Hs2/LG9.9.26. 6.75" BALLOON TYRES. X7430 K457 See X7430 for reports With reference to the attached reports. Up to that dated 16.8.26, the car was run with the 6.00" Dunlop… | ||
| Scan234 | Commentary on repeating car tests for Continental roads. | ||
| View original record | contd :- -2- Continental roads. We consider it is a pity that both PN. and CWB. are simply repeating the tests on the same cars as we have already tested. In our opinion it would have been a very much… | ||
| Scan235 | Visit to the Dunlop Co. in Birmingham to discuss modifications to triple stud tyres and information on balloon tyres. | ||
| View original record | x4565 Hs/Rm/LG14.9.26. x457 x4050 DUNLOP TYRES. During a recent visit to the Dunlop Co. Birmingham, we discussed a number of points with Mr. Paull, their [crossed out] developement superintendent.… | ||
| Scan236 | Report comparing the performance of Dunlop triple stud tread tyres against traction tread tyres, focusing on high-speed wobbles. | ||
| View original record | contd :- -2- comfort than the standard straight sided tyre we had been running them at reduced pressures. However, we do not believe that this accounts for their wobbling tendencies. The Dunlop Co.… | ||
| Scan237 | Results of testing three different tyre sizes in France to understand high-speed wobbles. | ||
| View original record | X4565 To R. from Hs/Rn. c. to BJ. Wor. c. to RO. E. c. to DA. BY. Hs/Rnl/LG10.9.26. HIGH SPEED WOBBLES. X4557 X4050 With reference to our Hs/Rn5/T23.8.26. in connection with peripheral weight tending… | ||
| Scan238 | Trial and procurement of 6.75' Dunlop triple stud tyres. | ||
| View original record | To ROY. from Hs/Rm. XL4565 Hs/Rm1/LG14.9.26. 6.75" DUNLOP TYRES. +L6050 With reference to Roy5/MG7.9.26. We are willing to try 6.75" triple stud tyres owing to the fact that no traction treads are… | ||
| Scan239 | Letter from Dunlop Rubber Co. Ltd. discussing testing and modifications for a new triple stud tyre. | ||
| View original record | DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES FORT DUNLOP, ERDINGTON, BIRMINGHAM YOUR REF: Expl.Dept. Hs/Rm3/LG. OUR REF: Local… | ||
| Scan240 | Continuation sheet of a letter from Dunlop Rubber Co. Ltd. regarding tyre wobble and non-skid properties. | ||
| View original record | A 121 D. R. CO., LTD. CONTINUATION SHEET No. 19 1. properties may tend to promote wobble rather more than one with the less effective non-skid, I think you will find that the tyres we shall send you… | ||
| Scan241 | Letter to Dunlop Rubber Co. Ltd. regarding high-speed wobble issues with triple stud tread tyres. | ||
| View original record | c. to BY. Expl: Dept: Hs/Rm3/LG. 15th. Sept. 1926. The Dunlop Rubber Co. Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sir, From a recent conversation which our Mr. Bailey had with Col. Matthews, it… | ||
| Scan242 | Procurement of modified 33 x 6.75 tyres and communications with the Dunlop Rubber Company. | ||
| View original record | 3-30 20/9/26 X4565 Hs. c. Wd BY3/H. 20.9.26. 33 x 6.75 tyres with triple tread modified in accordance with the scheme outlined to Rm. As a result of my letter, Colonel Matthew rang me up to say that… | ||
| Scan243 | Conversion of 6.75' tyres to a new triple stud pattern by Dunlop and the resulting objections and concerns. | ||
| View original record | X4565 To R. from Hs/Rm. c. to BJ. Wor. c. to E. Da. c. to EV. Hs/Rml/T21.9.26. 40/50. 6.75" TYRES. X4565 X4050 X3809 In spite of the fact that the 6.75" Traction Tread Tyres which we have been running… | ||
| Scan244 | Tyre supply issues for well-based wheels and engagement with Dunlop on high-speed wobble problems. | ||
| View original record | Contd. -2- Hs/Rml/T21.9.26. it is already obsolete. We therefore have no tyre we can fit on the well-based wheels at the moment. As a result of our somewhat unfortunate position, we have endeavoured… | ||
| Scan245 | Letter to the Dunlop Rubber Co. Ltd. requesting tyre performance data and availability of large section inner tubes. | ||
| View original record | X4565 Expl: Dept: Hs/Rnl/LG. 21st. Sept. 1926. The Dunlop Rubber Co. Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Paull. Development Superintendent. X4050 X4565 In… | ||
| Scan246 | The use of Dunlop 6.75' traction tread tyres and their performance characteristics. | ||
| View original record | To R. from Hs. c. to BJ. Wor. c. to RG. E. c. to DA. BY. c. to OY. X4565 HS5/LG22.9.26. DUNLOP TYRES. X4050 We have received a message from the Dunlop Rubber Co. today saying that they intend to carry… | ||
| Scan247 | Letter from Dunlop Rubber Co. Ltd. regarding a chart showing the increase in effective diameter of a tyre at high speed. | ||
| View original record | X4585. DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: HS/RML/LG. OUR REF: AH/CDL/R. FORT DUNLOP ERDINGTON BIRMINGHAM… | ||
| Scan248 | Graph plotting the increase in a Dunlop tyre's effective radius against speed. | ||
| View original record | DUNLOP RUBBER Co. LTD., BIRMINGHAM. SKETCHED BY APPROVED BY MILL DATE DEPARTMENT RECORD NUMBER INCREASE IN RADIUS. - MMS. SPEED. - M.P.H INCREASE IN EFFECTIVE RADIUS OF 33x6.75 DUNLOP CORD BALLOON… | ||
| Scan249 | Letter from Dunlop Rubber Co. Ltd. concerning the supply and delivery timescale for 33 x 6.75 tyres. | ||
| View original record | x4565 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: OUR REF: AH/D. Mr. Paull's Office. FORT DUNLOP ERDINGTON BIRMINGHAM… | ||
| Scan250 | Letter to the Dunlop Rubber Co. Ltd. regarding a graph of tyre diameter and the pending delivery of large section inner tubes. | ||
| View original record | X4565 Expl: Dept: Ha/RM4/LG. 23rd. Sept. 1926. The Dunlop Rubber Co. Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of A. Healey Esq., Mr. Paull's Office. We thank you for your… | ||
| Scan251 | Letter to the Dunlop Rubber Co. requesting figures for the rolling resistance of balloon and high-pressure tyres. | ||
| View original record | X4565 Expl: Dept: Hs/Rml/LG. 25th. Sept. 1926 The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of A. Healey. Mr. Paull's Office. A short time ago you were good… | ||
| Scan252 | Letter from Dunlop Rubber Co. Ltd. regarding a delay in providing requested test information. | ||
| View original record | X 4565 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: Hs/Rm1/LG. OUR REF: AH/CDL/R. FORT DUNLOP ERDINGTON BIRMINGHAM… | ||
| Scan253 | Letter to Dunlop Rubber Co. Ltd. concerning poor tyre life experienced in hot weather and requesting comparative figures. | ||
| View original record | X4565 Hs/RmL/T. 30th September, 1926. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Development Dept. For the attention:- Mr. A. Healey. Dear Sirs, During the recent hot… | ||
| Scan254 | Letter from Dunlop detailing the results of rolling resistance tests on two different tyre types. | ||
| View original record | X4565 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: Hs/Rml/LG. Expl.Dept. OUR REF: AH/CDL/C. FORT DUNLOP ERDINGTON… | ||
| Scan255 | Letter from Dunlop Rubber Co. Ltd. detailing the results and methodology of tyre rolling resistance tests. | ||
| View original record | page two. The distance rolled on 33 x 5 tyres at 45 lbs/sq.in. was 1096 yards, and on 33 x 6.75 tyres at 30 lbs/sq.in. 1088 yards. The ratio between the two is much smaller than in the case of the… | ||
| Scan256 | Graph plotting machine tests of rolling resistance against inflation pressure for two different tyre types. | ||
| View original record | DUNLOP RUBBER Co. LTD., BIRMINGHAM. SKETCHED BY MILL APPROVED BY DEPARTMENT DATE RECORD NUMBER ROLLING RESISTANCE (lbs. wt. per ton) INFLATION PRESSURE (lbs. per sq. in.) 33x5 TYRE 33x6.75 TYRE… | ||
| Scan257 | Graph of road rolling resistance tests, plotting inflation pressure against distance rolled for two tyre sizes. | ||
| View original record | DUNLOP RUBBER Co. LTD., BIRMINGHAM. SKETCHED BY. APPROVED BY. MILL. DATE. DEPARTMENT. RECORD NUMBER. DISTANCE ROLLED FROM REST. (YDS.). INFLATION PRESSURE (lbs. per sq. in.). 33x6.75 TYRES. 33x5… | ||
| Scan258 | Trial of 33 x 6.75 inner tubes supplied by the Dunlop Co. | ||
| View original record | Hs. X4565 BY/HM12/G.4.10.26. re 33 x 6.75 INNER TUBES. -------------------------- The Dunlop Co. have advised us that they are sending six tubes with valves fitted directly opposite the join, and they… | ||
| Scan259 | Inquiry about the availability of 6.75 inch balloon tyres with traction tread. | ||
| View original record | ARE [strikethrough]CAN WE OBTAIN[/strikethrough] 6. 6.75" BALLOON TYRES TRACTION TREAD AS RECENTLY FITTED 12 EX. STILL OBTAINABLE IN PARIS. RM. | ||
| Scan260 | Letter to The Dunlop Rubber Co. chasing the delivery of heavy inner tubes for high-speed wobble tests. | ||
| View original record | X4565 Hs/Rnl/LG. Expl: Dept: 5th. Oct. 1926 Messrs. The Dunlop Rubber Co., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of A. Healey Esq., Mr. Paull's Office. With reference to the… | ||
| Scan261 | Letter from Dunlop Rubber Co. providing data on tyre wear rates and mileage performance for different tyre sizes and seasons. | ||
| View original record | YL565 DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: Hs/Rml/T. OUR REF: AH/HR. Mr. Paull's Office. FORT DUNLOP ERDINGTON… | ||
| Scan262 | Letter from Dunlop confirming the despatch of heavy inner tubes for wheel wobble tests. | ||
| View original record | DUNLOP RUBBER CO.,LTD. TELEGRAPHIC ADDRESS: "DUNLOPS, BIRMINGHAM" TELEPHONE: BIRMINGHAM CENTRAL 4108 P.B.E. 25 LINES YOUR REF: Hs/Rml/LG. OUR REF: AH/HR. Mr. Paull's Office. FORT DUNLOP ERDINGTON… | ||
| Scan263 | Effects of low-pressure tyres on the steering of Phantom experimental cars. | ||
| View original record | X4565 To BJ. from Hs. c. to R. c. to Wor. c. to BY. c. to PN. Hs2/LG6.10.26. LOW PRESSURE TYRES ON PHANTOMS. 48430 K4730 Replying to BJL/E23.9.26. The steering on 8-EX car was identical to that fitted… | ||
| Scan264 | Tyre mileage in different weather conditions and the reliability of low-pressure tyres. | ||
| View original record | contd :- -2- therefore the mileage as we would anticipate, was low. Our records shew that we get less than one-half the mileage during the hot weather compared with wet Winter weather. This is… | ||
| Scan265 | Letter from Dunlop Rubber Co. providing data on tyre wear rates and the effect of seasonal conditions. | ||
| View original record | COPY. THE DUNLOP RUBBER CO. FORT DUNLOP, ERDINGTON, BIRMINGHAM. Messrs. Rolls-Royce Ltd. Derby. Expl: Dept: Dear Sirs, In reply to yours of the 30th.Sept., we have collected all the available figures… | ||
| Scan266 | The expected delivery of special experimental inner tubes from Dunlop to the Experimental Department. | ||
| View original record | Mt. Central Stores. from Hs/Rm. X4565 Hs/Rm2/LG7.10.26. We are expecting from Messrs. Dunlops some special inner tubes which they are supplying to us for experimental purposes. We think there will be… | ||
| Scan267 | Testing and implementation of low pressure tyres on Phantom models. | ||
| View original record | HS X4565 To Wor. from BJ. Copy to Hs. Copy to BY. Low Pressure Tyres on Phantoms. BJ9/E7/10/26 With reference to Hs'sLG6/10/26, please arrange for us to meet Hs. and BY. to-morrow, Friday, at 11 at… | ||
| Scan268 | Fitting of a fractional or similar device to the steering of chassis 103-MC equipped with low-pressure tyres. | ||
| View original record | To Wor. from BJ. BJ9/E7/10/26 - 2 - delivered with low pressure tyres shall have a fractional device to the steering, then can the frictional device or a somewhat similar device be fitted to 103-MC… | ||
| Scan269 | Requesting the Paris office to source six 6.75' traction tread tyres for testing. | ||
| View original record | To Ps. Paris. From Hs/Rn. X4565 Hs/Rm4/LGS.10.26. X3988 X4565 6.75" TYRES. This is to confirm our wire of even date. We are carrying out further tests on 6.75" tyres with traction tread. You will… | ||
| Scan270 | Letter to Dunlop Rubber Co. Ltd. regarding inner tubes and high-speed wobble experiments. | ||
| View original record | X4565 Hs/Rml/LG. Expl: Dept: 8th. Oct. 1926. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. A.Healey. Mr. Paull's Office. We thank you for the 6… | ||
| Scan271 | Post Office Telegraph sent from Paris to Derby. | ||
| View original record | POST OFFICE TELEGRAPHS TELEGRAMS for INLAND addresses may be handed to the messenger who delivers this form. The Post Office accepts telegrams by telephone. Office Stamp: 0162 SENT From: DERBY To:… | ||
| Scan272 | Confirming the availability and delivery delay of specific 'Dunlop' well-based tyres from Paris. | ||
| View original record | X4565 X3809 Ps2/Crn.9.10.26. From: "Ps" To: "Hs/Rm". WORKS. Re: "Dunlop" well based tyres. Your wire to hand this morning, reading:- ARE SIX POINT SEVEN FIVE BALLOON TYRES TRACTION TREAD AS RECENTLY… | ||
| Scan273 | Conference memo regarding testing and specifications for low pressure tyres and axle setups on Phantom models. | ||
| View original record | HS 44865 To PN from BJ. To CWB from BJ. To C. from BJ. To Sg. from BJ. To Wor. from BJ. To Hs. from BJ. Low Pressure Tyres on Phantoms. BJI/E9/10/26 Notes of Conference 8/10/26. Present: Wor.) Rm. )… | ||
| Scan274 | From BJ with instructions for PN and CWB to test a car with a heavy closed body in London and then France. | ||
| View original record | To PN from BJ. To CWB., C., SG., Wor., Hs. BJ1/E9/10/26 - 2 - PN or CWB should first try such a car with heavy closed body in London. Then if passable as regards heavy steering they should please go… | ||
| Scan275 | The availability and delivery delay for 6.75' Dunlop traction tread tyres. | ||
| View original record | To: "Hs/Rm" From: "Ps" X4565 Ps/Crn.3/12.10.26. Re: 6.75" Dunlop traction tread tyres. Your memo. Hs/Rm.4/LG.8.10.26 to hand and contents noted. We trust that by now our memo. Ps2/Crn.9.10.26 is in… | ||
| Scan276 | Steering fault discovered during medium pressure tyre tests in France, and arranging for further high-speed and traffic tests. | ||
| View original record | Handwritten: X4565 Handwritten: HS To PN from BJ. Copy to OWB Copy to Wor. Copy to Hs. Medium Pressure Tyres. BJ9/E20/10/26 With reference to the test made recently with medium pressure tyres in… | ||
| Scan277 | To standardise the terminology used for Low and Medium Pressure tyres to avoid customer misunderstanding. | ||
| View original record | X4565 To Hs. from BJ. Copy to R. Copy to Wor. Copy to BY...... Low Pressure Tyres. Medium Pressure Tyres. In order to prevent a considerable mdsunderstanding with our customers, it is desirable,… | ||
| Scan278 | Inquiry to Dunlop about tyre availability for 40/50 HP and 20 HP cars and experiments with heavy inner tubes to cure high-speed wobbles. | ||
| View original record | 4865 Expl: Dept: 4050 Hs/Rml/LG. 23rd. Oct. 1926. Messrs. The Dunlop Rubber Co.Ltd., Fort Dunlop, Erdington, Birmingham. Dear Sirs, For the attention of Mr. Healey. Mr. Paul's Office. We are anxious… | ||
| Scan279 | Comparing low and medium pressure tyre sections and proposing new standard sizes for the Phantom and 20 HP models. | ||
| View original record | To B.J. from Hs. c. to R. c. to Wor. c. to BY. X4565 Hs1/LG23.10.26. LOW PRESSURE AND MEDIUM PRESSURE TYRES. X4565 X4050 Replying to BJ13/E22.10.26. We have found the makers description of tyres most… | ||
| Scan280 | The collection or delivery of balloon tyres for chassis 88-LO. | ||
| View original record | S to W Hs/AJL X4565 BN/BkS/LH271026 re: Balloon Tyres ex 88-LO These tyres are now lying on hand at Lillie Hall ready for collection. Will you please let us know if you would like us to send them by… | ||
| Scan281 | Instruction leaflet for low pressure tyres on the Phantom chassis. | ||
| View original record | M A ROWLEY X4565? RECEIVED Hs 28 OCT 1925 BJp c. E. c. Wer. c. Hs. c. Sg. BY absent. BY/Cghll/H.28.10.25. ----------------- PHANTOM TYRES. ----------------- With reference to BJll/E.25.10.26. the… | ||
| Scan282 | Phantom tyres, high-speed wobbles, and the need for more information in the instruction book. | ||
| View original record | To EY. From Hs/Rn. c. to BJ. c. to Wor. c. to Sg. 44565 Hs/Rm5 /LG29.10.26. PHANTOM TYRES. 48430 With regard to BY/Cghll/H28.10.26. We consider that rather more information should be given with… | ||
| Scan283 | Effects of low-pressure tyres on the steering and performance of the 40/50 HP model. | ||
| View original record | To BY. from Hs./Rm. X4565 Hs/Rm6/LG29.10.26. X4565 X8430 X3538 LOW PRESSURE TYRES ON 40/50 HP. With the adoption of low pressure tyres, the steering susceptibility to small defects in these items has… | ||
| Scan284 | Tyre manufacturing defects causing vibration and steering issues. | ||
| View original record | contd :- -2- In this case it is useless to expect good results by balancing the tyre because it may still run out of truth and cause vibration. Sometimes when tyres leave the Factory, they have treads… | ||
| Scan285 | Alternative tyre makes for 21' rims and providing information on traction tread tyre wear. | ||
| View original record | X4565 To BY. from Hs/Rm. Hs/Rm3/LG5.11.26. TYRE EQUIPMENT FOR RR. CARS. X4050 Attached is a list of other makes of tyres which will fit on our 21" rims. We do not want any other tyre but Dunlop or… | ||
| Scan286 | Requesting an order for six traction tread tyres from Messrs. Dunlops. | ||
| View original record | X4565 To Wd/Ms. from Hs. Hs2/LG11.11.26. X3809 Please order from Messrs. Dunlops :- Six 6.75 traction tread well base tyres for 21" rims. Hs. | ||
| Scan287 | Steering tests for the 12-EX model, focusing on wobble issues under various tyre pressures and conditions. | ||
| View original record | X4565 To hs. from GWH. GWH/LG15.11.26. STEERING TESTS ON 12-EX - WITH THE FOLLOWING CONDITIONS :- X7430 X457 6.75" tyres. Tyre pressure 35, 40, 45 lbs/sq.in. (front) 35 lbs/sq.in. (rear) Friction in… | ||
| Scan288 | Technical memo discussing the steering and suspension setup for a new lightened axle with balloon tyres. | ||
| View original record | To Hy. from Hs/Rm. c. to WOR. 44565 Hs/Rm7/LG19.11.26. SPRINGFIELD. QUESTION 28. X4565 48430 With reference to Hy41/W16.11.26. The new type lightened axle has undoubtedly provided a steering that will… | ||
| Scan289 | Continued note on tyre performance relating non-skid treads and tyre section to wheel wobble. | ||
| View original record | CONTD :- -2- front brakes are applied violently with the steering on a lock. In our experience very good non-skid treads are bad for wobbles, also we find 6.75" section to be much more satisfactory… | ||
| Scan290 | Fitting of 6' tyres on a 20 HP car. | ||
| View original record | To PN. from Hs. c. to BJ. c. to Sg. X4565 Hs1/LG19.11.26 20 HP. TYRES. X5820 With reference to PN5/EH18.11.26. There is no fundamental reason why 6" tyres cannot be fitted on the 20 HP. car. The 6"… | ||
| Scan291 | Testing of 6' tyres on a 20 HP car and the risk of wobbles on models with front wheel brakes. | ||
| View original record | To B.J. from Hs. c. to F.N. s. to Sg. x4565 Hs4/L622.11.26. 20 HP. TYRES. x5820 Replying to BJ4/L22.11.26. A 20 HP. car (8-G-11) was run in France by R. in the Spring of 1925 fitted with 6" tyres. The… | ||
| Scan292 | Covering memo enclosing a copy of a document concerning tyres. | ||
| View original record | Mr. [illegible] -> Hs. X.4565 CS/026.11.26. Re TYRES. I enclose herewith copy of Oy3/R/111526 received this morning, in regard to the above. C. | ||
| Scan293 | Letter concerning the probable adoption of new large section tire and wheel sizes, and the discarding of old sizes. | ||
| View original record | Oy3-E-111526 November 15, 1926. Mr. Basil Johnson, Rolls-Royce, Ltd., London, England. (Copy for the attention of Mr.Royce " " " " " Mr.Bailey " " " " " Mr.Hives) Dear Sir: Re Tires We attach a copy… | ||
| Scan294 | Letter from The Seiberling Rubber Company regarding experimentation with smaller wheel diameters and new tire sizes. | ||
| View original record | THE SEIBERLING RUBBER COMPANY Detroit Branch September 4 1926 Mr. A. C. Ross Rolls-Royce Motor Car Company, Springfield, Mass. Dear Mr. Ross: There has been considerable surmise and experiment going… | ||
| Scan295 | Wheel balancing tests for 33 x 6.75' tyres, focusing on inner tube joint placement. | ||
| View original record | To BY. from Hs/AJL. +4585 Hs/AJL1/LG26.11.26. WHEEL BALANCING (33 X 6.75" tyres). +457 x401 We have carried out tests to investigate the advantages gained by using inner tubes in which the joint in… | ||
| Scan296 | Wheel balancing issues caused by the position of the inner tube joint relative to the valve. | ||
| View original record | contd :- -2- It is unfortunate that the alteration of the position of the joint in the tube has been made, for the following reasons :- (1) It is not conveniently possible to balance a wheel fitted… | ||
| Scan297 | Explaining the decision to standardise 5¼' tyres on the 20 HP model. | ||
| View original record | 4565 To BJ. from Hs. c. to PN. c. to Sg. Hs3/LG27.11.26. 20 HP. TYRES. 45820 The chief reason why 5¼" section tyres have been standardised for the 20 HP. is because we did not wish to make too big a… | ||
| Scan298 | Performance data sheet comparing 33 inch solid tyres with standard S.S. tyres. | ||
| View original record | X4565 30.11.26 X4565 RL1050 33" Solid Tyres. Tach) Revs. | R.P.M. | Lbs. | Equiv: HP. | Gear. 126 | 1500 | 142 | 64.2 | Top 1460 | 1750 | 134 | 70.0 | " 1680 | closed 2000 | 120 | 72.0 | " | open 2000… | ||
| Scan299 | Performance data table for 33 X 6.75 inch tyres at 35 lbs/sq.in pressure. | ||
| View original record | -2- 33 X 6.75" TYRES. Pressure 35 lbs/sq.in. Tach: revs. | Gear. | R.P.M. | Lbs. | Equivt H.P. ---|---|---|---|--- 1240 | Top. | 1500 | 142 | 63.0 1440 | " | 1750 | 132 | 68.0 1650 | closed | closed… | ||
| Scan300 | Standardisation of 6.75' traction tread well base rims on old type axle. | ||
| View original record | RR 755 REVISED (10H) (DE444 6-10-26) BM. COMPLETED 18.12.26 STANDARDISATION of CHASSIS PARTS. Date 29.11.26 X No. 4565 Drawing No. S879 Description of Parts. 6.75" TRACTION TREAD WELL BASE RIMS ON OLD… | ||
| Scan301 | Standardisation sheet memo regarding the cost of 6.75 traction well base wheels and tyres for chassis with hydraulic dampers. | ||
| View original record | To Hs. from My/Ro. C O P Y. My/Rb18/N/139A/BJ101226. STANDARDISATION SHEET X.3809 X.4565 Returned herewith is std. sheet for 6.75 traction well base wheels and tyres, with cost filled in. Please note,… | ||
| Scan302 | Fitting balloon tyres and hydraulic shock absorbers to a Phantom car, warning of high-speed wobbles. | ||
| View original record | To Hm/WW. from Hs/Rm. X4565 Hs/Rm2/LG8.12.28. CHASSIS No. 111-YC. KOSKY. X4565 X4118 With reference to Hm/WW13/KW7.12.28. We cannot agree to balloon tyres being fitted to Phantom cars with front wheel… | ||