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).
Implementation of alternative crankshaft balance weight schemes for the 25 HP engine.
| Identifier | ExFiles\Box 103\3\ scan0123 | |
| Date | 27th October 1931 | |
| To.R. From Hs.{Lord Ernest Hives - Chair} c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. to E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} c. to Sy. Hs.{Lord Ernest Hives - Chair}3/MJ.27.10.31. 25 HP. BALANCE WEIGHTS. X.5010. 18-G4. which is going to France, will have the 6/8 unit scheme, which will balance . of the crankpin. Our stock of forgings finished at the end of the second 50 in 'T' Series, so that shortly we shall have to be considering ordering further material. We are arranging to fit the alternative scheme of balance weights, that is, the Chrysler scheme on to the car GLN-60 which is used by Lp.{Mr Lappin} and should cover a good mileage in a reasonable time. We doubt, however, whether this car will have done sufficient mileage before we have to order more crankshafts. That being the case, we shall have to order the 6/8 scheme which will run in France on 18-G4. The crankshaft forgings dies have already been altered to make crankshafts suitable for the permanent 6/8 scheme and therefore it appears that this is the crankshaft we shall use after the present stock has been exhausted until we have run the Chrysler scheme sufficiently to prove that it is an advantage. Hs.{Lord Ernest Hives - Chair} | ||