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).
Collection of handwritten notes and reports on brake system performance and comparisons.
| Identifier | ExFiles\Box 182\M18\ img103 | |
| Date | 28th July 1914 guessed | |
| Description of the peculiarities of the brakes quite adds to our stock of knowledge EP{G. Eric Platford - Chief Quality Engineer} - dissertation - over-anxiety- or fretting too much? My present new - DRB so much better than the old Central one is inclined to tax them in a far different way Lord Montagu - always uses his side brake never his foot, which when not adjusted more than once a year. Now if the old side brake will do the work, -- then the present footbrake, so much larger, will also - but I'm prepared to admit it may not be as perfect as we can get it. So far the reports need not alarm us with the exception B Mr Spottiswoode's R Review shortcoming of the old central - conclude - it cannot pull up the car in the same distance as the present brakes. 9. do not consider any of the DRB complaints as bad as the complaint 'it can't pull up' against the old central, altho it was far better than the average. It suffered badly from elasticity between it & the roadwheel - our frying pan is not into the fire but into another which I think we shall be able to get out of Ref long alpine descents. - Special difficulties - if not quite impossible to make brakes which will stand these long descents without disadvantage - we ought to be delighted if they are not permanently damaged by the way ordinary users apply them. Looked @ Jungfrau elect. Rly & the way of a elect generator brake. I was urged to make quite a different attempt to outlines a 'compression brake scheme'. open the inf valve on both down strokes - a cooler power brake. Sent outline in. Works to assess horsepower absorption by such a scheme --- Not prepared to go back to Central without a struggle [Red ink annotations, left margin]: AN Classic New creation affirmed. R2 Cool Competent Appraisal of the Frying pan. Alpine here. Affair of the trying pan into fire. Another R & J (91) 11-7-14 [Red ink annotation]: Classics of a classic 'cool' papie Wiles Groken instructed - reduce wear - Rifled Brakes - thought of many times; Recurve & expensive. expect heat & braking done - I shot by wire worded Raybestos to do something worse unless we keep the possibilities in view. X2 Wor{Arthur Wormald - General Works Manager} Mer TC - Waldron & Blackshaw? reports (93) 11-7-14 1) Unsatisfactory - get heated & used oppressively. people complain of repair their... & out continuously Chauffeur quits, squeak. Superior in pulling up. Mechanism quits, squeak. Superior in unsat'y periods of jogging. garbled. 2) Birtly Blackshaw much prefers DRB (I driven by myself - old brakes used to make the car dance across the road. New one wears quicker than old if new one is driven by some forty V clumsy they soon get hot & their other troubles. gearboxes noisy periods in v-axle, ? Re customer, chauffeurs I'm not met anyone outside RR Works whom likes a new brake. X20 Mrs. Baileys Instruction Sheet 2/357 P Wor{Arthur Wormald - General Works Manager} (94) 15-7-14 [Red ink annotation]: X719 braking light at first DRB - Ferodo G.L. - pressed. Re using ferodo glid with order up enough for 3 pairs. Too open. Care W.Tood get matl @ proper & higher price material now in stores. EM (Ted Marriott) 11-8-14 A-A (Ambrose-Tuffy) Ward's report - up to fast cont. (95) 16-7-14 Thought superior to old - Silently, gentle pull-up, no noise period. Information in R.{Sir Henry Royce} oade & o clearance - statl hold for Town use - (Nothing not said before Cum) Disadvantages, increased with speed & amount use. On a 'Vervassain' is used hard in emergency (stayed on for several minutes) during which car swerved unmanageably. Dumped Alpenfahrt (Tris) on side method throughout. Grinding noise. | ||