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).
Log of handwritten internal communications and decisions regarding brake system development and testing.
| Identifier | ExFiles\Box 182\M18\ img106 | |
| Date | 29th July 1914 | |
| DRB (POLICY CRYSTALLISED IN R'S MIND) R.{Sir Henry Royce} to By.{R.W. Bailey - Chief Engineer} & Na.{Mr Nadin} & CJ. & H.{Arthur M. Hanbury - Head Complaints} Will Na{Mr Nadin} arr work to be cont'd during hols – urging – improvement needed. At poss moment a retrospective action. As far as I can tell – Ferodo liners, BG to less leverage, wider faces, drums & cooling ribs. Wait ref By: silencers, process EP{G. Eric Platford - Chief Quality Engineer}'s experiment re parts. (9) 29-7-14 (105) (Old Spotty overoiling on hand brake leads to) R – CJ to By.{R.W. Bailey - Chief Engineer} Wor{Arthur Wormald - General Works Manager} H.{Arthur M. Hanbury - Head Complaints} J.{Mr Johnson W.M.} Spottiswoode etc. I really regret to find the Front Ko's Send him our BCD set SAP. oil on brakes. Ref. Fill – 62 Fres- of Kenzol for cleaning process ?? 30-7-14 (106) (OLLEY's thirtytwo) By for R.{Sir Henry Royce} Reports R's work – not justified. New track drums, of which already completed & return to Works & test set (on 04 file) 27-7-14 (107) (GINGER! A MISFIRED ROCKET) CJ to Wor.{Arthur Wormald - General Works Manager} ? Definite mfo as to 1) % prod liner mat'l & as per 10,000 miles test? 2) If not, why not - to what extent is responsible for all tn? 3) What steps poss to prevent a recurrence of such changes? By.{R.W. Bailey - Chief Engineer} writd on memo – ‘Exactly my feelings, always a slight variation possible but this will not affect gen'l statement.’ 31-7-14 (108) Wor{Arthur Wormald - General Works Manager}/Mcr. to By “explanation” Mr Goodwell says in m/c/g castings, has not detected any diff in mat'l. Our own inspection found no diff. in full testing (Rockwell). We believe present iron is slightly more uniform & we are exp'g 2 other grades of C.I. (Hy{Tom Haldenby - Plant Engineer} also R - mply) 1-8-14 (109) (VERY SIMPLE SPARTANIC & OVER DRAMATIC & IMPERIOUS MEMO. Says) CJ to Wor.{Arthur Wormald - General Works Manager} R seeks his go ahead full spd with 1) Will die present Ferodo liners 2) Wide drums from steel forgings, cooling ribs 3) Simpler. Increased pedal motion, at last qr for 58 NA{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. (Hy{Tom Haldenby - Plant Engineer} also R - mply) 10-8-14 (110) (Daylight emerges on Dyno brake tests) Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} Rep. on DRB ‘Rutter’ drums on test, using straps 7 ½” mated 1 1/3 WIDE. 1st 7 ½” Lines 2” !!! 3rd gear at 20 mph on 1/12 full throttle 39 hp abs’d.{John DeLooze - Company Secretary} After 6 mins NS{Norman Scott} drum red hot & pedal ‘lowering’ appx 3”. Drums & parts straps bright red when shut down. Some copper must flush? conductivity results strafes giving = exp’n. Straps permly distorted. By & Hy{Tom Haldenby - Plant Engineer} agrees that this test exceeds anything on the road & cooling will be better on road. Road testing to follow. Distortion worse with iron & ferodo liners. R asked to hold off Thermoid & Raybestos tests pending primary Ferodo test. Peculiarly – NS{Norman Scott} brake does prove I work ok in every case. (Sheet 11, Mr Hives Taper by report Hy{Tom Haldenby - Plant Engineer} also R - mply) 17-8-14 (111) (Pleased R piles on the testing agony.) (R to Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} - Reply to) Wor{Arthur Wormald - General Works Manager}/Mcr/TC – R to Wor{Arthur Wormald - General Works Manager} for Hy{Tom Haldenby - Plant Engineer} (CJ. Na.{Mr Nadin} Bx. 3rd gear @ 20 mph for cont. brake absorption. Releasd on 4th @ 20 to open Suggests an endurance test on a pass car at full throttle. Mc. to be tested with its watercooled brake & our S/d Central to Delauray-B. Daimler, Lanchester & any other you have to test. to find at length of time a power absorption. R thought 5 or 6 mins in 4th at 20 mph full throttle is perhaps all we can expect. (Sheet 11. J.Na.{Mr Nadin} Bx.) 21-8-14 (112) (Brakes a primary & utmost important business) Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} to R for Hy.{Tom Haldenby - Plant Engineer} Any dyno can be used (not necessarily the Hump rig). Plenty of dynos on test now, no reason for delay. Brake trainers of h/c importance. Summary of improvements will be 1) mods of handbrake! 2) & 3) Trial with Alum brake shoes for 3 footbrake & 21-8-14 (113) (TRIUMPH. etc.) R to Hy.{Tom Haldenby - Plant Engineer} By & Hy{Tom Haldenby - Plant Engineer} to push expts & make partial duplicates & send to him for fitting to 58 NA{Mr Nadin} which far better than load control on NWC1 24-8-14 (114) 25-8-14 Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} (TC) CJ. R.{Sir Henry Royce} By.{R.W. Bailey - Chief Engineer} – Na.{Mr Nadin} 1926 Tested on dyno 26-8-14 (115) | ||