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).
Assessment of various vehicle components including thermostats, springs, wiring, and gear systems.
| Identifier | WestWitteringFiles\G\July1921\ Scan37 | |
| Date | 22th July 1921 | |
| To CJ. from R.{Sir Henry Royce} -2- R10/G22/7/21 Contd. instrument board. ✓ We have condemned the Galliator thermostat controlled shutters as being unreliably worked out. We have agreed to, and suggested the Foxboro' thermometer with hand controlled louvres to maintain the temperature under the bonnet in the winter time, and to prevent freezing. We are satisfied that the American manufactured rear springs are, as far as we can ascertain, quite satisfactory. We wish them to adopt the R.R. system of wiring with the one earth connection as carried out experimentally on 4 EX. and 6 EX. We have approved of their gear driven speedometer, and the only thing we know they are waiting for is the final arrangement of the rear tank, which is now being redrawn. X4150 They should also have by this time, the new standard double thrust for the Gleason bevel gear. We are also trying various arrangements for an easy conversion of the present stock of cars with the Gleason bevels, the most promising being that the large journal bearing should take the over-run inward thrust of the bevel pinion. X.3457 X.3545 It should also be remembered [REDACTED] we in England had adopted a 14 tooth pinion for the very heavy cars, that they ought to prepare at least to adopt the 15 tooth pinion for cars of ordinary weight, there being such improvement in acceleration and hill climbing on the top gear. 16/52 we consider too high a gear for even a light car with open body. X.4276. X,1613. X 805. X.4284. (to end) We have now examined the following switch boxes sent from U.S.A., and taken from U.S.A. cars, ① the Delco from the old Buick,② the Connecticut,③ the Westinghouse from 4 EX,④ the U.S.A. Bosch sent from Springfield and the ⑤Delco from the Marmon car. *All, with the exception of the last are not worth consideration in their present form and manufacture,x but the (Contd.) | ||