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).
Specifications for the fitment of starter motor brushes and springs on various chassis.
| Identifier | ExFiles\Box 35\1\ scan 084 | |
| Date | 24th August 1920 | |
| X.2652 EFC/T24.8.20. X.3348 - STARTER MOTOR BRUSH & COMMUTATOR SYSTEM. X.2652 C.M. quality G.3900 brushes are fitted up to chassis 1,000. C.M.3 quality brushes are fitted from chassis 1,001 onwards. G.3900 springs were fitted until F.7180 springs were available. Chassis numbers not known. F.7180 springs were fitted up to chassis 420 with the exception of chassis 358, 361, 411/2/3; these and all other chassis were fitted with springs F.7692. EXTRA EFC. R.R. 238A (100 T) (S.G. 64S. 18-2-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 3818 | ||