Specification for the 40/50 shunt dynamo and C.A.V. regulator for the Bensport chassis.
| Identifier | ExFiles\Box 60\3\ Scan225 | |
| Date | 29th April 1933 | |
| xloccu. By {R.W. Bailey - Chief Engineer} /RD. From Hs {Lord Ernest Hives - Chair} /Wst. c. to E. {Mr Elliott - Chief Engineer} Hs {Lord Ernest Hives - Chair} /Wst.2/MA.29.4.33. x642. x6044. 40/50 SHUNT DYNAMO AND C.A.V. REGULATOR FOR BENSPORT(Codename for 3 1/2-litre Bentley) CHASSIS. The specification of the winding quantities of the 40/50 dynamo for the above chassis is as follows:- No. of field turns per pole - 234. Wire used - 20 SWG. D.C.C. Superfine. Brush angle - 14º. Field resistance on regulator unit 15 ohms approx. made up with 26 SWG. Eureka (bare) wire. No. of armature conductors per slot - 16. Wire used - 16 S.W.G. D.C.C. Superfine. The specification to which the C.A.V. regulators should be ordered is as follows:- Open circuit operating voltage (cold) 15 to 15.5 volts. Current operation at 13 volts (cold) 14.0 to 14.5 amperes. Hs {Lord Ernest Hives - Chair} /Wst. | ||
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).