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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).
Fault in the 'SS' gearbox preventing easy engagement of the reverse gear.

Identifier  ExFiles\Box 15\5\  Scan062
Date  17th December 1928
  
Hs.{Lord Ernest Hives - Chair}
BY.{R.W. Bailey - Chief Engineer} From R.{Sir Henry Royce}
DA.{Bernard Day - Chassis Design}

X7310

R1/M17.12.28.

'SS{S. Smith}' GEARBOX. X.7310
X.5310

Mr. Hancock could not easily get in the reverse:
evidently the sliding pinion was touching the stationary wheel
first instead of picking up on the sidensaft wheel - 3rd. -
well in advance of the grear wheel - 1st.

This was foreseen in the design, and is correct
in the 20 HP., but we get it wrong in this important case.

Who's fault? It must have been through many hands who should
know better.

R.{Sir Henry Royce}
  
  


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