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 the petrol filler, vent, and tank, as well as body length dimensions for the 20HP 'O' series chassis.
| Identifier | ExFiles\Box 106\2\ scan0045 | |
| Date | 28th August 1929 | |
| BY: FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} X5460 DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}2/M28.8.29. C. to HS.{Lord Ernest Hives - Chair} EP.{G. Eric Platford - Chief Quality Engineer} GX. HO. MNG. JG. 20HP. PETROL TANK. 51 IN "O" SERIES & ONWARDS. We note your remarks in BY/CGH{W Clough}4/G24829., and those of EP.{G. Eric Platford - Chief Quality Engineer} in EP{G. Eric Platford - Chief Quality Engineer}8/H20829. re. the petrol filler and vent on chassis 51 in "O" series and onwards. (1) The petrol filler was placed nearly vertical on the recommendation of the Exp. Dept. who complained of the difficulty of filling with a funnel from a can with a leaning filler. Times have no doubt changed and we agree to the filler being leaned back at 15° to the vertical, as it was prior to 51 in "O" series. (2) The vent pipe which passes over the chassis side channel has to be removed to enable the petrol tank to be taken down. Even though the fixing screws to the tank may be masked off by the coachwork the tank can be taken down by releasing the tank suspension, and then revolving the tank to the rear at the top, when the vent fixing screws on the tank can be got at by an ordinary screwdriver. We agree to the vent fixing on the tank being moved to the rear approximately 2" as indicated in pencil on LF.1351., and also to its being leaned to increase the accessibility. We presume that this and modification (1), will occur on "P" series. (3) Prior to 51 in "O" series we see from the chassis print that the maximum overall length of the body at the waistline was limited to 111". We also notice that this has been increased to 113" on the chassis print for 51 in "O" series and onwards. We have not seen the standardisation sheet. We were aware that some coachbuilders had taken the liberty of building bodies of that length, but our designs have been made to suit the RR. specified and agreed maximum length. Prior to 51 in "O" series the body at the base at the centre of the chassis could extend to approximately 13" aft of the rear axle. It will be seen that on 51 in "O" series and onwards the same is possible. (4) We suggest that on the chassis print we add immediately the dimensions given in pencil on the portion of the chassis print herewith, namely, dimension for the maximum overhang of the body base at the centre, and another for the overhang of the base opposite the vent fixing on the petrol tank. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||