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 the damper and crankshaft for the Phantom Sports model to address roughness at very high revs.
| Identifier | ExFiles\Box 25\3\ Scan271 | |
| Date | 20th September 1927 | |
| Y634 Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} c. to BJ. BY.{R.W. Bailey - Chief Engineer} R3/M20.9.27. [strikethrough]XX8810[/strikethrough] X. 634 X. 8774 X. 3865 PHANTOM SPORTS. DAMPER ETC - ROUGHNESS AND VERY HIGH REVS. --- G.1. DAMPER. We are putting on the G.1. type of damper. FIBRE. We want to use red or grey vulcanised fibre in damper if we use thin fibre 1/16" thick or less, because if this is soaked in water it swells 40%, and we are allowing ample clearance for any swelling that is likely to take place if the thickness is not over .065. Mr. Nadin also tells me that in USA. they do not find our slipper wheels satisfactory with bakelite in any form: I believe they are right. CRANKSHAFT. Examining this in the light of aero engine work (RR.F. engine for instance) we have decided to reduce the dia. of the crankpins, webs, etc., and make a considerable reduction in the out of balance load: oil drilling will be special. E's drg. LeC.2462 shews the above (leaving here tomorrow). We are following on with lighter piston and conn. rod. R.{Sir Henry Royce} | ||