Rolls-Royce Archives
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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).
Bentley running issues, specifically low ground clearance in snow and valve spring failures.

Identifier  ExFiles\Box 173\1\  img214
Date  18th November 1934
  
SG.{Arthur F. Sidgreaves - MD} WOR{Arthur Wormald - General Works Manager} E BY A H DY{F R Danby} B / K5/Rm{William Robotham - Chief Engineer} 18/xi/34 W.T. 2
EP{G. Eric Platford - Chief Quality Engineer} MX{John H Maddocks - Chief Proving Officer}
34
VII Running of Bentley
I have been held up several times recently.
(1) Ground Clearance. This being about 2-3" less than the average American, in deep snow the tracks made by other vehicles leave a pressed ridge of snow which lifts the Bentley in the air on the bottom half, further progress being impossible. For American conditions the springs should have 1 1/2" more initial Camber and the wheels should be either 19" or fitted with larger tyres to give .5" more axle clearance. This will necessitate a lower axle ratio to keep engine speeds the same.
(2) Valve Springs. Have had a distressing epedimic of valve spring failures, three in the last two days. Having no more spares have wired you for a set. The spring are broken in two or three places, all inlets. Have not been running motor above 4000 R.P.M. except in short bursts. The new set will show
  
  


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