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).
Specification sheet detailing components including the starter, transmission, axles, and brakes.
| Identifier | ExFiles\Box 125\1\ scan0048 | |
| Date | 17th June 1930 guessed | |
| -3- Starter - Delco Remy. Over-running Clutch engagement. Starter Ratio - 25 to 1. Generator: Charges 18 amps cold - 10 amps hot at 1600 RPM, 7.3 volts. Cuts in at 420 RPM - 8 m.p.h. Third brush generator with reduction of charge when warm by thermostat opening at 175°F.{Mr Friese} IV. Transmission. (a) Clutch: Two driven discs rigidly attached to shaft, i.e. without "soft center". 4 Woven fabric facings .140 thick, 10" ext.dia., 7" internal dia. (b) Gearbox: 3 speed "Synchro-Mesh". Ratios (Percent of high) 2nd. 66.2 1st. 40.0 Rev. 33.3 Drive shaft - Spicer metal universal joints. Propulsion and Torque through torque tube. (c) Rear axle: 8 3/8" road clearance. (14 1/2" external dia. of casing). Ratio 4.39. 13:57. (d) Tires: 7 x 19. 6 ply. 5" rims. 45 lbs. front. 40 lbs. rear. V.{VIENNA} Springs. Eaton Axle & Spring Co. Front 42" x 2 1/4" ten plates. Rear 60" x 2 3/8" nine plates. VI. Steering. Castor angle (Pivot lean) - 2 1/2°. Camber - 1 1/2°. Toe-In - 3/16". VII. Brakes. 16 1/2" drum dia. front and rear. cont'd.{John DeLooze - Company Secretary} | ||