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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).
Test report on a Bentley side spare wheel carrier, detailing a durability test and weight comparison.

Identifier  ExFiles\Box 114\3\  scan0211
Date  8th January 1937
  
10 B

To E.{Mr Elliott - Chief Engineer}
c. to Sg.{Arthur F. Sidgreaves - MD}
c. to Hs.{Lord Ernest Hives - Chair}
c. to RHC.{R. H. Coverley - Production Engineer}
c. to By/RD.
c. to Ds.
c. to HV.

Rm{William Robotham - Chief Engineer}/Les.29/JH.8.1.37.

Bentley - Side Spare Wheel Carrier Led.5252.

Re E.1/Hr..7.1.37.

We have bumped this carrier for 17 hours using 3" cams.
The test was stopped owing to a failure of a front spring. As the front springs were new when this carrier was fitted we conclude that the life of carrier is greater than the life of our standard springs.

We think this carrier could be lightened considerably.

At the moment it weighs 3 lbs. 6 ozs. more than the present Bentley side spare wheel carrier.

Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie}
  
  


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