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).
Instructions for modifying clutch plates to eliminate transmission rattles.
| Identifier | ExFiles\Box 130\3\ scan0098 | |
| Date | 30th June 1939 | |
| 1110 To HPS.{Horace Percy Smith - Experimental Factory Mgr} c. to Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. to Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}3/JH.30.6.39. CLUTCH PLATE & TRANSMISSION RATTLES. Please take a standard B. & B. 11" clutch plate ex stock :- (1) Drill out the rivets which hold the hub together. (2) Dismantle the hub. (3) File out all the windows which carry the springs to 1.062 ± 3, measuring along the length of the spring. (4) Re assemble using ¼ bolts and lock nuts to replace the rivets, and four distance pieces .375 dia. and the same thickness as the existing collars on the rivets. (5) Fit this plate to 11.B.V. re American B. & B. plate (Buick Spare Part). (1) Remove one of the new .437 dia. distance pieces, and in its place fit a steel plate of same thickness, to fit in one of the .750 slots in the hub, so as to lock the spring drive completely solid. (2) Fit this plate to the Buick. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||