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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).
Weight comparison of standard and lightened parts fitted on a Bentley 5 B 1V, detailing weight reductions.

Identifier  ExFiles\Box 88\3\  scan0152
Date  5th April 1935
  
To - Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from RHC.{R. H. Coverley - Production Engineer}
c. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}
c. Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}
c. Hs{Lord Ernest Hives - Chair}/Std.

RHC.{R. H. Coverley - Production Engineer} 5/ETM.5.4.35.

BENTLEY WEIGHTS.

We give below the weights of various lightened parts fitted on 5 B 1V.

Carburetter Air Silencer - LOP. EB.683.
Weight of Magnesium Air Intake EB.686 - 1.687 lbs.
" " Standard Aluminium Air Intake - 2.765 lbs.
Weight reduction 1.078 lbs.

Fan - LOP. EB.169 - LeC.3784.
Weight of Magnesium Fan Bracket E.56864 - .343 lbs.
" " Standard Aluminium Fan Bracket - .468 lbs.
Weight reduction .125 lbs.

Weight of Dural. Fan Blades (not fitted) 1.390 lbs.
" " Standard Fan Blades 2.187 lbs.
Weight reduction .797 lbs.

Torque Reaction Damper - LOP.EB.178.
Weight of lightened Damper to Ex. details - 1.218 lbs. (Handwritten: 1lb 2oz)
(fitted to offside only)
Weight of pair of standard Dampers - 4.000 lbs. (Handwritten: 4. 8")
Weight reduction 2.782 lbs. (Handwritten: 3lb 6oz)

Continued.
  
  


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