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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).
Report page discussing an investigation into engine vibration caused by crankshaft torque.

Identifier  ExFiles\Box 25\3\  Scan054
Date  2nd February 1914 guessed
  
-2-

by the variation in the re-action
(acting on the mass of the engine) due
to the varying torque on the crankshaft.

You will understand that these
investigations are necessarily long
and tedious, but I will issue a
detailed report as soon as possible.

I think the matter is of great
importance, and there is no doubt
that it is the same vibration as Mr
Royce speaks of as occuring at 20 m.p.h.
on previous chassis.
  
  


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