Engineering log detailing brake development, material testing, and dyno/road test results from July-August 1914.
| Identifier | Morton\M18\ img107 | |
| Date | 25th August 1914 guessed | |
| [Red ink annotations are in brackets] Wor {Arthur Wormald - General Works Manager} by Hy. {Tom Haldenby - Plant Engineer} re By's items & processes & experiment reports. (106) 30-7-14 R - CJ. By & Wor {Arthur Wormald - General Works Manager} re Spottiswoode's Eng. We really regret we had to trouble him for the rest parts ---. Send him our BCD set SAP. By to R for new front brakes. Ref. full-62/1-. Of benzol for cleaning process ?? [Red: IN MIND CJ, Old Spotty's rear head. Send him our BCD set for trial or brakes. By for R] By for R. {Sir Henry Royce} Regards R's wail - not justified. (107) 27-7-14 New front drums of which already completed & issued to Wor {Arthur Wormald - General Works Manager} to set etc (W.O.H file) [Red: OLLEY sent a rocket] CJ to Wor. {Arthur Wormald - General Works Manager} Definite info as to 1) Is prod liner mat'l responsible for 10,000 miles test? 2) If not, why not, & what steps poss to present the same. Always a slight distortion possible but this wld not affect gen'l statement (108) 31-7-14 [Red: GINGER! a MISAIRED ROCKET] Wor {Arthur Wormald - General Works Manager} /Mcr. To By's explanation - Mr Goodwell says (109) 12-8-14 In M {Mr Moon / Mr Moore} /c/g castings, has not detected any diff in mat'l. We find no reason why liner should be any diff in mat'l. All testing (Rockwell). We believe present iron is slightly more uniform & we are trying to get still another grade of C.I. CJ to Wor. {Arthur Wormald - General Works Manager} R seeks his go ahead full of ideas - (110) 10-8-14 1) Wide die pressed Ferodo liners. 2) Wide drums from steel forgings, cooling ribs. 3) Temper. Increased pedal mvt, at least as per 58NA {Mr Nadin} (this means more leverage - cwm). 4) Reduced leverage (does not match up with 3. cwm). By could put a hand at once. As you see any reason why not? If not - let it be done LET IT BE DONE [Red: VERY SENSIBLE & OUTER DRAMATIC & IMPERIOUS MEMO. by Hy {Tom Haldenby - Plant Engineer} also R] Wor {Arthur Wormald - General Works Manager} /Hy {Tom Haldenby - Plant Engineer} Rep. on DRB (Ribbed drums) on test, using WIDE liners. (111) 17-8-14. 20-8-14 Sheet II (113). e.g. straps 1 3/4" liners 2" //!! 3" gear at 30 mph. Thump m {Mr Moon / Mr Moore} /c & full throttle. 39 hp absorbed. After 6 mins N.S. drum red hot & Pedal lowering. Some copper rivets flush. Straps firmly distorted. NS {Norman Scott} straps not red when shut down. By & Hy {Tom Haldenby - Plant Engineer} agree that this test exceeds anything on the road & conducting R tests. Brakes will be better on road. By & Hy {Tom Haldenby - Plant Engineer} agree that straps giving = exp(?) distortion. Worse with iron & ferodo liners. Road testing to follow. Off Thermoid & Raybestos tests pending. Promised Ferodo tests. Peculiarity - NS {Norman Scott} brake does more work in every case. Reply to (112) [Red: Daylight emerges on Dyno brake tests. Distortion of liners. R asked to hold promising Ferodo tests. of Hives Reports] Wor {Arthur Wormald - General Works Manager} /Mcr. R to Wor {Arthur Wormald - General Works Manager} for cont. brake absorption. (112) 21-8-14. R suggests severe tests on an endurance test on a passed car at full throttle. Meyc to test car with IT watercooled brake & our Std Central, to determine by Daimler, Lanchester & any other you have to test, the length of time & 'power' absorbed. R strength is 66 mins in 4th at 20 mph full throttle is perhaps all we can expect. [Red: Pleased with files on testing. agony.] Wor {Arthur Wormald - General Works Manager} /Hy. {Tom Haldenby - Plant Engineer} CJ. Ns. {Norman Scott} By. {R.W. Bailey - Chief Engineer} 3rd gear @ 20 mph too for cont. brake absorption. Tested on 4th at 20 on the open road. Brake. & any other you have to test. (114) 21-8-14. Plenty of dyno test new, no reason for any delay. Brakes trainers of importance. [Red: R to Hy {Tom Haldenby - Plant Engineer} 24-8-14. Brakes business of utmost importance.] Summary of improvements met. 5) Raising pedal plate. 6) Radial brake. 7) ... materials with Alum brake shoes for 58 NA {Mr Nadin} which engr now is far better than old central or new CI. push expts & make patterns & send to him for fitting to ... [Red: 2) Raddbrake 3) footbrake] Wor {Arthur Wormald - General Works Manager} /Hy {Tom Haldenby - Plant Engineer} (TC). CJ. R. {Sir Henry Royce} By. {R.W. Bailey - Chief Engineer} No. 1926 tested on dyno (115) 25-8-14. (116) 26-8-14. linens, 4th gear, 20 mph full throttle. 1 min 48 secs top - three red hot in middle. Test stopped, hot brake still holding round the drum. After cooling - ruffling (0.005" sideways) 0.005" on dia. - Nordy on test. worked afoot, 0.47 hp min. Results poorly with previous report (Ferodo). [Red: TRIUMPH AT LAST.] | ||
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).