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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).
Follow-up test report regarding a propeller shaft touching a crossmember and the proposed solution.

Identifier  ExFiles\Box 101\1\  scan0214
Date  23th April 1936
  
BY.{R.W. Bailey - Chief Engineer}
c. Hs.{Lord Ernest Hives - Chair} Ds. EV.{Ivan Evernden - coachwork}
x500a
GRY{Shadwell Grylls}-
Follow up test
as requested
E.T/HP.23.4.36
Rm{William Robotham - Chief Engineer}

re 22-G-V.{VIENNA}

Referring to 10,000 mile test report dated 8/9.4.36, Hancock states that the propeller shaft touched on the third crossmember over humped back bridge, and we have ascertained that it touched at the top of the opening in the crossmember.

This car is fitted with the crossmember, as shown on N.Sch.4669 which was designed for the .850 hypoid rear axle fitted with the smaller road wheels, and increased camber rear springs, and we should, therefore, expect this result, as with normal wheels and road springs the shaft is set up relative to the opening.

We find that production chassis are instructed with the original standard crossmember, in conjunction with the .850 hypoid and standard camber rear springs, which leaves the propeller shaft set down somewhat relative to the opening in the crossmember. We understand however the risk of touching on the bottom side is somewhat remote. Nevertheless a further crossmember has been prepared restoring normal clearances top and bottom which it is again understood will be introduced on production as soon as possible.

E.{Mr Elliott - Chief Engineer}
  
  


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