The 8-EX car, its return to Bond Street Garage, and notes on tappet noise during warm-up.
| Identifier | ExFiles\Box 20\11\ Scan271 | |
| Date | 24th May 1928 guessed | |
| BJ. from Hs. {Lord Ernest Hives - Chair} 8-EX CAR. We have just returned from WW., the above car is at Bond Street Garage. R. {Sir Henry Royce} tried this car at WW. It has been decided to proceed with induction system of the present design as fitted to 8-EX. We are not ready with the new parts as regards knowing what results we shall obtain. 8-EX has 4 1/4 comp. ratio (standard). 9 1/4" pendulum lever. Rubber engine feet. We especially want you to note tappet noise in 8-EX. There is a period with the aluminium engine, when the car is started from cold when the head etc. expands quicker than the tappet rod and the clearance is increased and for a short time (10 mins.) tappet noise may be more pronounced. It depends on rate of warming up. We know of no means of preventing this - it was discussed with R. {Sir Henry Royce} There should be no increase in noise once the engine is warm. Please note the butterfly in the exhaust rattles on 8-EX: do not be deceived by this. Hs. {Lord Ernest Hives - Chair} | ||
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).