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).
Modifications to a subframe for a Park Ward Twenty to accommodate a hypoid axle.
| Identifier | WestWitteringFiles\T\March1929-December1929\ Scan289 | |
| Date | 12th March 1929 | |
| (HS{Lord Ernest Hives - Chair}) BY.{R.W. Bailey - Chief Engineer} FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}1/M3.12.29. Copy to - HS.{Lord Ernest Hives - Chair} 20/25 EXP. ENCLOSED LIMOUSINE - 14-G-4. x5380 x2066 We wired you today as follows "AGREE TO MAKING "SUBFRAME FOR PARK WARD TWENTY TO SUIT HYPOID AXLE PLEASE SET THIS OUT" We want the pots in this car to be approximately the same in magnitude as those which will exist normally on the 1st. long frame cars we make in production. On these 1st. long frame cars you have inserted an aluminium packing approximately .550 thick under the rear rubber buffer. On the experimental car we are proposing to remove this packing, increasing the negative camber in the rear spring accordingly. Therefore if we fit hypoid gears with .550 offset the rear universal joint will be in a position relative to the top of the frame not very different to that which it occupies on the standard production long frame chassis. We would be glad if you would set out the modified pot over the propeller shaft, and send us a print. Park Ward's are all ready to start work on this body, and would be glad to receive the subframe at the earliest possible date. We suggest that you send them the frame complete with the heelboard cross member, but minus this pot if it would enable you to despatch it any sooner. The pot and rear floor could be made in Derby. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||