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).
Meeting with Mr. G.J. Scott to discuss fitting the Scott Self Starter to a car.
| Identifier | ExFiles\Box 61\2\ scan0071 | |
| Date | 6th December 1913 | |
| R.R. 285A (100 T) (S.G. 643. 19-2-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2618 X3374 Da{Bernard Day - Chassis Design}3/G61213. Re. R5/P4.11.13. X.950. RE SCOTT SELF STARTER. X.3374. X.543. X.294. J.{Mr Johnson W.M.} for R.{Sir Henry Royce} 6.12.13. Da{Bernard Day - Chassis Design}3/G61213. I had Mr. G.J. Scott, of the Scott Starter Syndicate to see me and discussed the question of fitting his starter to one of our cars. He considers one of their CS060 type starters will start the R.R. engine by turning it at from 60 to 80 R.P.M., but this depends on the engine very much, and it may turn it faster. It may be necessary to use the coil ignition for starting, but we think not. The weights he gave were :- Batteries - 90 lbs. Dynamo - 75 lbs. Switch & Fittings - 6 lbs. ------- 171 lbs. They get an output efficiency of 60% on the in-put 15 H.P. Crossley he shewed me, it started instantly every time, using 17.5 amps 24 volts and turning the engine at 130 r.p.m. The engine dimensions were 80 x 120 4 cylinder, with a very high compression. The reduction ratio they obtain on the small starter is 8 to 1, and on the large, the one we get 12 to 1. A greater reduction than this is difficult on account of the diameter of the central gear wheel, but a reduction of approximately 2 to 1 C. | ||