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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).
Improved slipper flywheel and spring drive, outlining modifications needed for the crankshaft and wheelcase.

Identifier  ExFiles\Box 14\2\  Scan047
Date  26th July 1929
  
BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer}

c. to SG.{Arthur F. Sidgreaves - MD}
HS.{Lord Ernest Hives - Chair}

X7010

E.2/M26.7.29.

X.7300
X.7010

SS.{S. Smith} IMPROVED SLIPPER FLYWHEEL
AND SPRING DRIVE.

We send you herewith LeC. 2339. shewing the above.

The crankshaft for this can be made from the last modified crank instructed by machining the front end.

The wheelcase is the same as at present except for an alteration to the bore for the oil retainer.

E.{Mr Elliott - Chief Engineer}
  
  


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