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).
Paulin Streamline Bentley Car, its performance, modifications, and the possibility of a repeat build on an 'M' Series chassis.
Identifier | ExFiles\Box 161\1\ scan0134 | |
Date | 15th July 1938 | |
138D To Rm.{William Robotham - Chief Engineer} from Sg.{Arthur F. Sidgreaves - MD} Copy to Hs.{Lord Ernest Hives - Chair}BY.Da.{Bernard Day - Chassis Design} Mx.{John H Maddocks - Chief Proving Officer}Da{Bernard Day - Chassis Design}/Ev.{Ivan Evernden - coachwork}Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} Sr. re Paulin Streamline Bentley Car. Sg{Arthur F. Sidgreaves - MD}7/E20738 I am in receipt of Rm{William Robotham - Chief Engineer}5/R15.7.38, the contents of which are very interesting. Reference to the wind tunnel calculations given in the Da{Bernard Day - Chassis Design}/Ev.{Ivan Evernden - coachwork} memo. of the 10th November shows a forecast of 117 miles an hour, which is of course very different from 103 1/2. Nevertheless it is encouraging and worth investigating further from the point of view that you emphasize. Will Sr. please send me a photograph showing side view and front views of the car and also let me know what the position is in regard to the customer allowing the car to come over here, bearing in mind that I should not like it to come when I am away on holiday, which will be from the 30th July to the 22nd August. Will Sr. also please tell us the price that the coachbuilders would charge us for a repeat as compared with this first one. Another point is that to complete this car, it was necessary apparently for the following departures from standard to be embodied: 1. Higher ratio back axle. 95 111 (10x41) } 115 90 106 2. Special hubs and front brake drums. 3. Exhaust cut-out and controls. Not NEEDED 4. High compression engine. 5. Lower radiator. YES 6. Special thermostat. YES Will you, therefore, please let me know which of these would be necessary if we wanted to repeat the idea on an 'M' Series chassis with overdrive gearbox. I am not quite sure what the relative difference would be between the gear ratio with the overdrive gearbox and the higher geared back axle which this particular car has got and whether you would want to depart from the future standard of 6.50 x 17" tyres. I think you mentioned more head room and on this | ||