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 progress notes, tests, and issues concerning double rear brakes.
| Identifier | Morton\M18\ img094 | |
| Date | 26th August 1913 | |
| DOUBLE REAR BRAKES (3) * R to C.J & Wo, Bx. Progress with tests? Pass cures for 21-2-13. 1) springing 2) clutch/vibration 3) Torsional creak/rd drum (Coronation rattles) 4) Desperate efforts needed, no dilly dallying. AW/TSH Exp 2/3 Gon satisf exc when only ankle portion used. 21-2-13 2nd Wor{Arthur Wormald - General Works Manager} Memo. pro & cons incl Wl-ms. N.V. luid 8-3-13 R - C.J. Bx. Na{Mr Nadin}-Nor Push forward. Rectify minor faults 20-3-13 R.{Sir Henry Royce} ref Hy{Tom Haldenby - Plant Engineer}'s Weekly report. Agree - push on with several more axles 28-3-13. c/CJ. Wor{Arthur Wormald - General Works Manager}, Na.{Mr Nadin} attention more ferodo brake. Radiator Tho Rad is the only possible one. AW/TSH Exp Dept B weekly report to R.T. incl Pck lighting sets 22-4-13. Weight added: 564 lb. Removed: 519lb. 3rd axle period reduced, such is about to be sent to R.{Sir Henry Royce} AW/SM. Rep. on 2301 Hines rep/its axle v.{VIENNA} good for silencer 22-4-13. a nite pulling a low op. Brakes v.{VIENNA} satisf. * C.J & Na.{Mr Nadin} Put a double brake on the road at once. Run 200 22-4-13. miles a day, pref. in France, up to 10,000 miles, in 10 week. Poss. effect on Shelton not lake zero prod. * Cooling - Present system is unsatisfactory. R telegram to J.{Mr Johnson W.M.} ref 2700 Sg.{Arthur F. Sidgreaves - MD} Steering & brakes O.K. from Hyeres. R asks whether Rod. Bonnard double rear brakes from Paris vibrate when hot. Wor{Arthur Wormald - General Works Manager}/Na{Mr Nadin} ref Dept/l memo. use heavy cleard. body. For forward to Paris & to C. (not R's car). 24-4-13 R to TC ref urgency Report AW/SM 24-4-13 Na{Mr Nadin} - Bx ref R.{Sir Henry Royce} of 28-4-13 R to J.{Mr Johnson W.M.} c/Wor.{Arthur Wormald - General Works Manager} Na.{Mr Nadin} Ref 2301 Now driven several c.100 miles 5-5-13 R* r.axle control. ? spring coupling margin. 20-5-13. rel. costs 19-5-13 dutte. 72 mph. 2520 rpm. (Valves float at about 2250). For Brooklands demo 18/52 inst of 16/52. stronger valve springs. 20-5-13. Higher compr. (75 or 80 instead of 64). Large carbo. incl pipes. 26-5-13. For higher comp - Braile ka. Hand-lever under the car. 30-5-13. ? in steel. Try in 4 3/4" dia. 30-5-13 PISTONS Light R ref car that goes mountaineering. 3rd. Wor{Arthur Wormald - General Works Manager} to D 7-6-13. This one car description - why & what. Pleased that R promises no major alts needed. R to CJ ref car in lines of 2700. Asks Director Interlocutor? journey 1800 7-6-13. work. No brake adj needed. Hand adj. clear of gear. Existing re-done in white kit. Vernier Footbrakes Adj at L.C. in June. needs a pit. (Vertically written on left margin) Standardisation agreed. X2 Wor{Arthur Wormald - General Works Manager}/ to Bx. Na.{Mr Nadin} Talk of R's favourable reaction. 12-6-13. motive type steel for double rear drums. X2 Wor{Arthur Wormald - General Works Manager}/Hy.{Tom Haldenby - Plant Engineer} Report of 2301 has done 10,000 miles in France 10-7-13. Pair brakes v.{VIENNA} exc. v.{VIENNA} def. no wear. Shd last. X2 Wor{Arthur Wormald - General Works Manager}/SM. Opinions on D.{John DeLooze - Company Secretary}-r.{Sir Henry Royce} brakes. CJ say yes. 10-7-13. Heavy landau body incl fast & heavy running on 2300 with on 21-7-13. of 3,228 miles - over 5,000 miles on Continent. Ref brake shoe materials page 11. 21-7-13. 29.4.13 FHR - " 2301 - completed 10,000 miles. Why do so many good things for us. Worth a risk. 5-5-13 FHR - 100 mph. up to 75 mph. Passed anything better. 28-5-13 FHR - R/T for mountaineering. Nothing to report. Going well. 10-6-13 FHR - Does not heat up any more than etc. while chassis is queer. 9-6-13 Hurst - dinner of 2301. v.{VIENNA} efficient. little wear. Wonderful improvement. R to J.{Mr Johnson W.M.} 31.7.13. By say D.R. brakes will meet all pub. br.{T. E. Bellringer - Repair Manager} trouble. Ho freedom from bend. R is correct. Still experimenting. Try SINGLE HELICAL BEVELS, but have little faith in double helical. Wor{Arthur Wormald - General Works Manager}/Pd Hartnid on which gears decent seem to roll well. 26-8-13 | ||