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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).
Remarks on the control of a proposed 40/50 epicyclic gearbox.

Identifier  ExFiles\Box 15\5\  Scan368
Date  28th February 1933
  
x7310

E.{Mr Elliott - Chief Engineer} FROM HDY.{William Hardy} HDY{William Hardy}2/M28.2.33.

C+ to HS.{Lord Ernest Hives - Chair} DA.{Bernard Day - Chassis Design} 40/50 EPICYCLIC GEARBOX.
_______________________

We send the following information which
we have extracted from remarks made recently by R.{Sir Henry Royce} regarding
the control of the proposed epicyclic gearbox.

"The control will be by oil pressure
"supplied by a pump in the gearbox, but driven from the
"engine.

"The gearbox will probably be separate
"from the engine, and in this case a shaft with a univer-
"sal joint each end will be necessary, and it is suggest-
"ed{J. L. Edwards} that this shaft will be about level with the trans-
"mission, on the opposite side to the pedals, just clear
"of the flywheel, and will run/a quarter and a
"half engine speed. between

"It is not thought that the drive on the
"engine will ever have to be provided on the present
"Phantom engine with timing gears at the front.

"The flywheel diameter will noy need to
"exceed that of the 20/25 engine"

HDY.{William Hardy}
  
  


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