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).
Clutch slip on the Peregrine engine and a request for new clutch springs.
| Identifier | ExFiles\Box 169\4\ img091 | |
| Date | 6th July 1932 | |
| RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} c. to By.{R.W. Bailey - Chief Engineer} P.1 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}14/MA.6.7.32. PEREGRINE CLUTCH. The clutch slip on this engine is due we think to the working coefficient of friction being .224 whereas we have not been able to exceed .17 on other cars. The clutch springs Hs.{Lord Ernest Hives - Chair}667 reduce the coefficient to this figure, and are less highly stressed. Will you please make 3 sets as soon as possible Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||