Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Requesting the manufacture of pulleys to test a new Phantom III fan belt on a B.III engine.

Identifier  ExFiles\Box 94\5\  scan0061
Date  20th April 1938
  
To By/Ald.{F. Allwood - Experimental Design} from Rm{William Robotham - Chief Engineer} Std.
c. HPS.{Horace Percy Smith - Experimental Factory Mgr}

We wish to test out a Ph.III. fan belt with new angle of V - approximately 33° and top width of approximately 1", with a minimum of delay. In order to do this it will be necessary to make the test on a B.III. engine unit which will be running endurance very shortly and to avoid delay we wish the necessary pulleys to be put in hand right away.

At the moment we have not received the actual belt so that the exact width of groove and angle of Vee cannot be determined, however, the details can be instructed to avoid delay and these final dimensions added as soon as available.

Will you therefore please instruct the necessary pieces for a 1/1 ratio drive, pulley external diameters to be 5.320, general vee dimensions as mentioned above, as a B.III. engine.

Rm{William Robotham - Chief Engineer}/Std.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙