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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).
Reinforcing the 20HP Chassis engine suspension tube to prevent bending.

Identifier  ExFiles\Box 103\2\  scan0194
Date  22th March 1926
  
c. to Hs.{Lord Ernest Hives - Chair}

X5000
BY/SS{S. Smith}3/DB.{Donald Bastow - Suspensions}22.3.26.

Re 20HP Chassis - Crankcase & Bearings. Sec:5000.
Engine Suspension Tube.

We give below copy of memo BY4/H.12.3.26:-

"We have had one case of this tube bending on test, undoubtedly due to driving fast over a hump-backed bridge, but in addition we have had a number of complaints from outside sources where roads are bad, in countries like Australia and Spain.
In order to eliminate this fault, I wish to put a reinforcement tube in the straight length of the suspension member.
Will you kindly make a layout and let me look at it".

Scheme 743 has been approved by Mr Bailey.

Will you please try out one experimental set of parts to attached drawings E.53933/4, as soon as possible, so that same, if satisfactory, may be instructed for production.

Scheme 743 - Stress Diagram of Front Susp: } Two
E.53933 - Reinforcing Tube. } prints
E.53934 - Suspension Tube Arrgt: } attach-
} ed.{J. L. Edwards}

BY/SS.{S. Smith}
  
  


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