The incompatibility of fitting a No.1 Scheme Sequence Starter to a No.2 Scheme crankcase due to a change in bolt dimensions.
| Identifier | ExFiles\Box 64\1\ scan0293 | |
| Date | 30th June 1927 | |
| To EFC. {E. Fowler Clarke - Electrical Engineer} c.c. to THC. c.c. to BY {R.W. Bailey - Chief Engineer} /RD. X.7620 BY {R.W. Bailey - Chief Engineer} /SS {S. Smith} 1/DB. {Donald Bastow - Suspensions} 30.6.27. X 7620. Re EAC.7. Sequence Starter. EFCl/T.22.6.27. X.7625A. Mr Coverley has raised the question of fitting the first Sequance Starter to the latest EAC.7. bottom half crankcase, made for the 2nd. Sequence Starter Scheme. As, however, the pitch circle diameter of the three securing bolts has been reduced from 3.625 (No.1. Scheme) to 2.750 (No.2. Scheme) any adapter flange is out of the question. The original crankcase for No.1. Scheme is not now available, and to repeat the instruction means alteration to existing pattern involving further cost and delay. Will you kindly advise us on this matter. BY {R.W. Bailey - Chief Engineer} /SS. {S. Smith} | ||
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).