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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).
New design for a pedal gap plate and its implications for driver comfort.

Identifier  WestWitteringFiles\L\April1924-June1924\  Scan68
Date  7th May 1924
  
BY- FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork}

Copy to - CJ.
" HS.{Lord Ernest Hives - Chair}
" WOH.

ORIGINAL
SECRET.
DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}2/M7.5.24.

E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C.111.

re. PEDAL GAP PLATE. X9470

We send herewith N.sch: 1800. shewing a design of pedal gap plate which allows the pedals to have fixed undetachable plates.

The plate has the same exterior shape as that at present standard on the 40/50. but is split as shewn.

A small aluminium casting screwed to the gap plate after it is in position fills in the gap in front of the steering column stay in the first horizontal board in the case of 'C' and 'D' type cars.

The accelerator pedal attachment between its stem and lever has been revised.

These modifications are primarily drawn for pedals on N.scheme 1766. but Derby should apply them to any other of the pedal schemes already received if occasions require it.

Will Derby please provide a similar gap plate for 'C' and 'B' type steering.

We understand that the new 'B' type pedals shewn on N.scheme 1766. are thought to be not so comfortable as the standard 40/50. which have the plate at a steeper angle. By reducing the angle of the plate from about 30° to 45° to the vertical we felt we were giving increased comfort by causing the driver to have a less acute angle between his leg and foot. Perhaps you may have an opportunity to get various people's opinions on the matter at Derby, and also at Sales.

DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork}
  
  


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