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).
Report detailing issues and potential solutions for brake system problems.
| Identifier | ExFiles\Box 182\M18\ img100 | |
| Date | 16th June 1914 guessed | |
| (Red text) Tom (Red text in margin) * After 1st 10k of running these factors keyhole to lining * SƒD D.R.B (Red Text) 'DOUBLE TROUBLE' ⑥ 1. H.Harkness P.P.Repair Dept nf DRB - only 1 rec'd 8-7-14 (84) Car new, new liners @ 5,000 miles. Owner driver @ higher speeds. Personal exp. - effect'y s. inferior. & central dog wearing more than av. oldo. Handgrinding more than nu worn than dog. Aided by graphite grease, exactly like DRB in felt difficult & to be discouraged. Raybestos linings * fitted by Wardman & austructly re-effected, silent. Owner v.{VIENNA} pleased. (Red Text overlay) R Harrogate with Raybestos effected? Tom H says best exp/walt for might prove 1) efficiency 2) Dailine, 'durability (Black text) Tom H says wd{Mr Wood/Mr Whitehead} hurt exp/walt to might prove 2" Dailine, "durability - a true prophecy (Red Text) * R Telegram - Try better C.I. suggest cold blast & chilled. Try other material such as 8-7-14 (85) 10.7.14 EERodo all round or on lipos. Increase length (by means circumferential) c.s. width by a/c to affd ½". Improve positioning of actuating. Spottiswood immitate C.I. has been used. Send me the car as soon as examinable. Try Flack's lead as lubricant. (Red Text) ** R to By ref. complaints - much variation 8-7-14 (86) c J.{Mr Johnson W.M.} Wor{Arthur Wormald - General Works Manager}-Na{Mr Nadin} quickly to nearly others like Chas. H.{Arthur M. Hanbury - Head Complaints} Wandleby. Try alt. in mat'l or lub. (Red Text) * 1) var grades of C.I. 2) costumering brake drum, made of high ric steel. Change in drum or C.I. might make all the diff. 3) Diminish B.o? more axial length of drum & straps. 4) Ferodo linings or any other suitable, non-seizing mat'l 5) Copper a great favourite of mine. Not b to central C.I steel - seizure prone. ?? End taps of lining tend to dig in to give lined ends (Prods) aft 3". Hub goldrite? Rivet holes - iner. recesses, & fill with graphite - a special (enormously good) ? Carborundum Co? Grapday? Co facts to one fact but w/o system (small linkages & linings). Knitty put in to hand all exp'ts - you can let us know if any conclusion arr. at. make them endorsement? Brake actuation with axle minimal variation, by moving diff equally shaft position. PS Since writing the aforesd, reports suggest we have sent out some brakes with hard C.I in the liners. (Red text in margin) X2 Wor{Arthur Wormald - General Works Manager} pu EP{G. Eric Platford - Chief Quality Engineer} into the Hot Scorch REP CT to GINGER 10.7.14 DOUBLE TROUBLE X2 Wor{Arthur Wormald - General Works Manager}/MC To EP{G. Eric Platford - Chief Quality Engineer} CJ now considers DRB front axle. D.{John DeLooze - Company Secretary} Prime 10-7-14 (87) CJ. reports 8 sets of op. hard liners were fitted & you fitted brake 2 mths{Reg Matthews} ago. & get no repeated verbal & written affliction: if we not yet received any from you. CJ also requested of reports from our chassies on DRB & dol control. This works for our dept. their car has been sent to CJ & the other 3 are @ your sheet he requested 1 wke ago - no report yet to hand. Wor.{Arthur Wormald - General Works Manager} says, D.I in report gives him progress. I refer to Unless I hear from you by 3, o'clock my report will have to contain at one info. EP{G. Eric Platford - Chief Quality Engineer} to Wor{Arthur Wormald - General Works Manager} in reply, 8 pets thro normal teat- 10-7-14 (88) continues only diff - melind & squeak. For Ret wear. clear evidence of improvement - Goning do not know really where out in test c. New dyno test control. Brakes must necessarily to measure actual wear. 8 tests are being done c. Control etc etc. Report SA ready & hand probably tomorrow. Also recently suppd. Car to Radley & can get it today but no report from Radley on yet. Car has done aftr 1,000 miles - Wear slight, 6 notches of hand adj. Squeaks when pulling up on f brake. Reports from Waldron, Blackshaw, Ward is away, his report will be provided. S A P. (Red text in margin) *** X a v good analysis of the state of RB{R. Bowen} exp X2 Wor{Arthur Wormald - General Works Manager}/Mer, Tc Liners wearing out. Hy{Tom Haldenby - Plant Engineer} o R not able 10-7-14 (89) Exp mth cyl C.I. made in Brittania Fdy Co. Not so eff. @ D town. 8 sets on test chassis cannot get any on their Peskfords report on theirs. from Wm Mills Ltd. Placid from Wm Mills Ltd now being fitted on scrap o cars. Exp/2. more yel noise - 10% lead/Cu. Exp ogrusk to allaction. quieter slight P.S. squeak. | ||