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).
Modifications to a car, including a crankshaft replacement, speedometer alteration, and exhaust system upgrade.
| Identifier | ExFiles\Box 55\1\ Scan041 | |
| Date | 23th May 1931 | |
| 85992 To H.{Arthur M. Hanbury - Head Complaints} From Hs.{Lord Ernest Hives - Chair} c. to Sg.{Arthur F. Sidgreaves - MD} Yor. c. to K.{Mr Kilner} Ds. c. to By.{R.W. Bailey - Chief Engineer} Ha.4/WJ.23.5.31. 16-G4. We have returned this car to W.W. today. The work we have done on it since it came to Derby this last time is that we have changed the crankshaft - previously this had a standard crank with a small pin. It is now fitted with a large pin crankshaft with balance weights on Nos. 1, 4, 6, 7, 9, and 12 webs. We found the speedometer on this car reading high and it has been altered, now it reads about 1 mile/hour high at 60 m.p.h. We have also fitted to this car a new exhaust manifold and a larger diameter pipe between the manifold and silencer. Hs.{Lord Ernest Hives - Chair} | ||