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).
Comparing a 1 EX starter with a 6 EX starter, noting increased noise and suggesting improvements.
| Identifier | ExFiles\Box 183\M22\ img184 | |
| Date | 24th August 1920 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CJV. " " WOH. " " DAY. " " RY. " " EFO. " " BF. ORIGINAL. R10/G23/8/20. 10 RE STARTER - 1 EX. COMPARED WITH 6 EX. X.37036 X.39236 X.3082 X.3986 X.8350 X.3779 The starter behaved perfectly on both cars, except on 6 EX. the increased number of teeth appeared to make the starter definitely more noisy. I think we ought to avoid this arrangement. X.3748 It must also be remembered that the increase in the strength of the winding of the magnets in the case of recent cars will naturally increase the noise of the starter clutch. ? X.4480 I have suggested that a set up spring be interposed between the magnetic arrangement and the clutch. This might make the arrangement more silent and have less tendency to damage this unit. See another memo for future suggestions R.{Sir Henry Royce} RECEIVED 24 AUG 1920 | ||