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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).
Inconsistent performance of the 20 HP starter pinion.

Identifier  ExFiles\Box 40\6\  Scan084
Date  29th November 1924
  
To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce}

X3592

R7/M29.11.24.

re. 20 HP. STARTER PINION. X.4384 X.3592 X.3587

I am not quite sure what is happening to these, because 5-G-2 has a pinion on it which acts beautifully. I believe this is a RR. Bijur but the pinion on 4-G-2 is not passably good. This pinion is stated in the log book to be a Bendix, but is probably a Bijur, as there is mention of cork faces. If this pinion is a RR. latest type, this scheme is not working consistently as the 4-G-2 starter pinion is distinctly worse than 5-G-2.

R.{Sir Henry Royce}
  
  


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