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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).
Specifications for spare wheel weights and associated spring adjustments for 20 HP and 40/50 HP models.

Identifier  ExFiles\Box 71\2\  scan0118
Date  22th January 1926 guessed
  
-2-

a spare wheel is assumed to have its weight distributed
65% front and 33% rear.

On the 20 HP. however, its weight is assumed
to be 100% on the front when carried on the step.

ABROAD.

The 40/50 HP. front springs are strengthened
above standard for Spain and Australia - the 20 HP. left un-
altered because 20 HP. has 25% stiffer springs, 40/50 HP.
only 20% for these countries.

SPARE WHEEL WEIGHTS.

40/50 - Actual spare wheel weight ---- 86 lbs.
Allowance for spare wheel ---- 75 lbs.

20 HP. - Actual spare wheel weight ---- 69 lbs.
Allowance if carried on
rear ---- 100 lbs.
Allowance if carried on
step ---- 70 lbs.

--------------------

Hs{Lord Ernest Hives - Chair}/W.A. Robotham.
  
  


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