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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).
Advantages of a new 3.5 to 1 back axle ratio and urging its standardization.

Identifier  WestWitteringFiles\D\February1920\  Scan48
Date  19th February 1920
  
To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce}
Copy to CJ.
" " BN.{W.O. Bentley / Mr Barrington}
" " WOR.{Arthur Wormald - General Works Manager}

ORIGINAL.

X.3545
X.3457

RE BACK AXLE.

X.3612

I think all of us have agreed for a long time that at least a small increase in the back axle ratio would be a distinct advantage to our present cars, and I think we must persevere to get silent axles with the 3.5 to 1 as being the best all-round compromise.
We understand that you will probably be receiving some Gleason gears of this new 3.5 to 1 ratio at an early date, and I should be very pleased if you would push them forward as soon as you get hold of them, so that we can have this ratio made standard, which I am sure will fit all cars, including the light ones and certainly the heavy ones.

R.{Sir Henry Royce}


W.E. 5227 (200 D) (R'D 409 50-4-11) H'W S/120/1?
  
  


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