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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).
Improvements to the torsional stiffness of frames for larger cars.

Identifier  ExFiles\Box 14\8\  Scan318
Date  30th November 1931
  
Y7380

HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce}
R3/M28.11.31.
Sent off 30.11.31.

C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} BY.{R.W. Bailey - Chief Engineer}
re. LARGER CARS.
X.634.
X.7380.

My impression is that we must do something to improve
these in torsional stiffness so that the frame is not so liable
to follow the front axle.

To get some definite experiments on this subject I
suggested, and it was agreed, that it would be good to fit up one
car as rigidly as possible, using the engine, gearbox, and cross
in the frame, all to contribute to the stiffness, and for the
moment ignore entirely the vibration due to the engine impulses,
torque reactions, etc.

It was realised also that the sports car must be so
fitted.

If in these experiments it is found a definite benefit
to use the engine for stiffening instead of at present for damping,
we should modify the engine so that it can be used for this purpose
with less tendency to vibrate the car.

R.{Sir Henry Royce}
  
  


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