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).
Technical memo detailing modifications to the Japan P. engine and radiator suspension system.
| Identifier | ExFiles\Box 179\1\ img067 | |
| Date | 25th November 1931 | |
| ORIGINAL B. FROM E.{Mr Elliott - Chief Engineer} C. to SG.{Arthur F. Sidgreaves - MD}/DR. HS.{Lord Ernest Hives - Chair} JAPAN P. ENGINE AND RADIATOR SUSPENSION. EL/25.11.31. X5605. X5250. Further to our conversation of this afternoon we send you herewith the original of LeC. 2947. which gives the remaining information on the above job. It should be understood that the side channel requires lifting and increasing in depth to N. sch. 3335. on both LeC. 2947. and 2967. The dimension shown on LeC. 2947. are all settled. When lifting the side channels the top of the cross member has to follow suit but the centre portion of the bottom edge of crossmember cannot be raised on account of leaving clearance for passing the fan belt through. The top bolt of the radiator suspension bracket follows the top edge of crossmember and the two bottom bolts will rise up with the rise in the bottom edge of side channel. As regards the torque reaction damper the hole for this in the cross channel is at present too close to the hole for the crankcase side member fixing bolt. We therefore desire to swing the centre of the torque reaction damper disc radially round the nearest portion of the radiator bracket, thereby raising it and leaving more width of cross member web in the thin place aforementioned. The length of the torque reaction damper between centre of friction disc and centre of anchorage should of course remain as before. E.{Mr Elliott - Chief Engineer} | ||