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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).
Plan to test new crankshaft and fan pulleys and belts, noting potential overheating issues.

Identifier  ExFiles\Box 135\4\  scan0051
Date  9th March 1940
  
- 2 -

Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards}1/GH.9.3.40.

Continued:-

blanks, and we have promised to let Mr. Shilton have drawings of our crankshaft and fan pulleys. He has agreed to make up four sets of pulleys, two of which will be tried on the Ferodo test rig to determine relative rate of wear of pulleys and belts, and the other two will be sent to Derby for fitting to motor cars.

The principal difficulty anticipated with this material is its lack of heat conduction with consequent risk of the belt overheating. Due however, to the increased coefficient of friction between the belt and pulleys, the consequent reduction in slip may be sufficient to keep the heat generated in the belt down to figure where radiation and conduction will provide the necessary rate of heat transfer from belt of air. This will of course be investigated on the rig.

Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards}
  
  


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