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).
Rear wheelarch clearances for a new 60.750 rear track and its impact on body design.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan061 | |
| Date | 7th April 1930 | |
| TO EH. FROM EV.{Ivan Evernden - coachwork} SECRET. EV{Ivan Evernden - coachwork}2/7.4.30. COPY TO EH. HS.{Lord Ernest Hives - Chair} SY. SCL. [STAMPED] ORIGINAL [HANDWRITTEN] x7380. x1830 x1810 RE WHEELARCH CLEARANCES. 6.750.REAR TRACK. P.2. We send herewith N.Sch.3086. shewing the rear wheelarch clearances for the 60.750. rear track, set out on the lines of the latest clearances used on P.2.at present. The rims are 19ins. diameter and the tyres drawn are the largest possible which can be fitted to such rims. We have shewn the hubs moved out a total amount of 1.550, and this would give a xxxx 60ins, track with the present standard wheels. We have shewn the proposed new wheels having the tyre and rim moved out .375ins. relative to the shell, thus giving a track of 60.750. We have sent a print of this drawing to Messrs Park, Ward & Co, and are altering the body which they are building for the second experimental car to suit. If therefore these new wheels are not going to be used we must know at once. It will be seen that with this new axle and wheels, on maximum bodies with low rear seats a rear cushion 47.500ins. wide is possible. Will DA.{Bernard Day - Chassis Design} please sign this drawing and hand it to BY.{R.W. Bailey - Chief Engineer} EV.{Ivan Evernden - coachwork} | ||