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 detailing tests, issues, and modifications for brake and wheel systems.
| Identifier | Morton\M18\ img097 | |
| Date | 28th April 1914 | |
| MAIN LOG: X2 DUNLOP DET. WIRE WHEELS. pt adapted 22.09.13 D R Brakes 'Lighter drums - springing out of round'. Poor brakes. fouling of all cones at once. OK. Wt diff - 3 lb 6oz per wheel. DRB now to be produced. ? was heavy & interim. Cry lighter section. Hyde tested to death. 30.09.13 (15-10-13) X2 Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} CJ to JR{Mr James Royce} By.{R.W. Bailey - Chief Engineer} Ns.{Norman Scott} DRB tested. want to delete springs 11.10.13 (44) "070" play for a few days. 10 hrs usage. OK 13.11.13 (45) CJ to Wbas The Balloon goes up! 2700 car quite unsteerable for use in traffic 13.11.13 (46) brakes poor at slow speed. OK at 5mph. Pl make test! Wen made before SH d/n? 18.11.13 (47) X2 Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} 'I am sorry' ref oil or grease. CJ car 9 am springy? New press. needed than old. No control for violent retardation. D effective & much sweeter. Tests Hy{Tom Haldenby - Plant Engineer} do not show that diff is in favour of DRB. 29.11.13 (48) CJ to Wer Noise - DRB v old? Can we change over? 21.12.13 (what a b. silly suggestion). CJ to Wer Don't bother R.{Sir Henry Royce} apart from noise got to conquer. Exp to tackle DRB. We R.{Sir Henry Royce} 15.12.13 (49) R to Da{Bernard Day - Chassis Design} Ref brakes alter. complication not formidable. Not V 16.12.13 (50) CJ Wor{Arthur Wormald - General Works Manager} Smitten with Da{Bernard Day - Chassis Design}'s Drgs. X2 Wor{Arthur Wormald - General Works Manager}/Hy.{Tom Haldenby - Plant Engineer} So we must exp. it & then know. To go again to bend them more. 17.12.13 (51) R to By.{R.W. Bailey - Chief Engineer} c Wor{Arthur Wormald - General Works Manager} To B's findings - Dirt getting in. I say so. What is wrong? J.{Mr Johnson W.M.} Ref harden info - Dirt getting in? Muddy water flying in all direction. Undershields. 18.12.13 (52) X2 CJ to J for R.{Sir Henry Royce} 'I must say'. Favourable to DRB. Peugeot Linings n Fabry?? over crude. 24.12.13 (53) R to B 'C'-Wor{Arthur Wormald - General Works Manager} Hy{Tom Haldenby - Plant Engineer} Oil pump oil getting on to brake lining. 22.01.14 A singler - R.{Sir Henry Royce} I'm sure that this will stop it, as it was put on to do so & harden. 27.01.14 did not expand them that this can was put on so as to do so a harden by accident. 25.04.14 (58) As. Wor{Arthur Wormald - General Works Manager}/Mer for Hy.{Tom Haldenby - Plant Engineer} Tests on 7 Cl samples & SHy/ff. 27.04.14 new shoes soft, Exp after 600 miles. Return good or bad?? (59) exp - 1500 miles. Little diff. PN{Mr Northey} to J to Wor.{Arthur Wormald - General Works Manager} Latest DRB - Worried & disappointed. V slow. Not consistent - FB 27.04.14 (60) Reports of no ineffective (5 miles silent but could be oiled & it cleared). DRB My (PN{Mr Northey}) In past ... rapid wear. eg machining new wheel - 2,000 miles. after 700 m! Open Cnds car, 2,000 mi. quietly. 10,000 m expectation - 10,000 m.{Mr Moon / Mr Moore} 27.04.14 (61) Wor{Arthur Wormald - General Works Manager}/Mer not sent to J.{Mr Johnson W.M.} ?? Hy{Tom Haldenby - Plant Engineer} queries. 'Wrong'. 28.04.14 (62) Exp.t lasted 19,000. Has no margin nte). Bronze - good for silent. OK for wear. ? tests are being made. sometimes copper being tested. Wor{Arthur Wormald - General Works Manager} 4 page report to J.{Mr Johnson W.M.} ref conference. 28.04.14 (63) Pd. By.{R.W. Bailey - Chief Engineer} Hy.{Tom Haldenby - Plant Engineer} Hs.{Lord Ernest Hives - Chair} ref noisy brakes. 1) Noisy & rapid wear. made - Tests ref micro metal. 2) New supplies? 3) ref Crs report - fm Churchward. bronze is silent. Squeak slippy, mod/d 1/9th lead/Cu deeper C/sk revels. load better than Cl. Exp - LCA tried on car. 4) Slow speed traffic - Central lock nut. High speed more trouble. Conference. 64RB{R. Bowen} much more efficient. (64) 5) readvises they. 64RB{R. Bowen} - OK when left W'ton. Exactly what did he do? Pd says soft metal removal? MARGINALIA (RED INK): Left Margin Top: Wor{Arthur Wormald - General Works Manager} to By.{R.W. Bailey - Chief Engineer} By trusts to faithful car trial any kind of brake. Left Margin Middle: PEUGEOT brakes running truly, free, perfectly silent, running sweet in action, powerful & effective, no slack to take up, packed correctly with Ferodo. Left Margin Middle 2: CJ to Wor.{Arthur Wormald - General Works Manager} Brakes noisy. Not to mention their menthol on steep hill. Dangerously inefficient. Left Margin Bottom: Back brakes making a great noise. Reports came in. CJ to Wor.{Arthur Wormald - General Works Manager} Nick of time. Brakes want seeing to on weekend. Cranks & adjusting them. Want to imitate Peugeot this is it. It seems to me that we should try to imitate them. Who can we suggest should do this fine piece of work. Right Margin Top: Perrot Cr.{Mr Cra???ster / Mr Chichester} Peugeot design exactly the same as ours & he uses Ferodo lined brake drums. Right Margin Bottom: Brakes. Are anything but silent. (Trouble) we've got to present an absolutely quiet car. | ||