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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).
Pinion, bearings, and oil retention design for a 1' offset hypoid gear, including a clarifying sketch.

Identifier  WestWitteringFiles\R\January1928-March1928\  101
Date  8th March 1928
  
FROM R.{Sir Henry Royce}
(At Le CanadelHenry Royce's French residence.)
C. to - BD{Mr Berend}, BY, HS.{Lord Ernest Hives - Chair}

R9/M5.3.28.
REC'D, & DESPATCHED FROM WW. 8.3.28.

1" OFFSET HYPOID GEAR. X2066 X3807

Regarding the 1" offset hypoid gear, the pinion shewn on N. sch. 2552. should be used until proved wrong - i.e. with 45 X 110 New Departure bearing, no sheet metal casing. I would not use Schatz for fear failure and delay.

I do not object to the felt, but am pleased we are not trusting to it for oil retaining. Close.

Regarding oil retaining I fear N. sch. 2552. is not quite right (see sketch.)

[Sketch annotations]
Ball bearing.
Close to retain oil in bearing.
Far apart & drained not to form pump.

R.{Sir Henry Royce}
  
  


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