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).
Improvements to the Phantom Sports model, focusing on the G.1. damper, crankshaft design, and lighter pistons.
| Identifier | WestWitteringFiles\Q\July1927-September1927\ Scan143 | |
| Date | 20th September 1927 | |
| HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} RECEIVED ORIGINAL R3/M20.9.27. X3865 X634 X-8774 PHANTOM SPORTS. DAMPER ETC - ROUGHNESS AND VERY HIGH REVS. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1. DAMPER. We are putting on the G.1. type of damper. FIBRE. We want you 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 diameter of the crankpins, webs, etc, and make a considerable reduction in the out of balance load: oil drilling will be special. E's drawing LeC.2462., shews the above (leaving here tomorrow.) We are following on with lighter piston and connecting rod. R.{Sir Henry Royce} | ||