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).
Component performance including petrol gauges, water pump, magneto drive, and starter motor modifications.
| Identifier | Morton\M18\ img062 | |
| Date | 21th October 1921 | |
| -10- E.L. COX'S PETROL GAUGE. With the exception that on one or two occasions whilst filling up the needle has been inclined to stick, the petrol gauge has been very reliable, and is a decidedly a better proposition than the previous petrol gauges. WATER PUMP to LCP.H.77661. E.78848 Casing modified to H.81698 H.82668 Lubricator Body. In connection with Semi-expanding carburettor. The water pump started to leak at the gland at an approx mileage of 6000, and could not be cured by tightening up the gland. It therefore became necessary to dismantle the pump and fit a new packing gland. The gland taken out appeared to be solid and in a dry condition. It was destroyed in the process of dismantling, therefore we could not obtain any further evidence. MAGNETO & DYNAMO DRIVE to LCP.E.78944. We have again had the failure of the fabric dynamo drive becoming loose. The holes in the fabric become elongated, and by taking hold of the magneto drive shaft it can be rocked backwards and forwards approx. 1/4". This loss in the drive consequently retards the magneto. It would appear that the washers on the fabric attached to the spider drive is not of sufficient area to take the drive without being tightened up solid. We have noticed this failure on several of our cars of late. ELECTRICAL PLANT. STARTER MOTOR. Automatic Self Lubricating Bearings fitted. D.72183 Bearing Bracket modified to Drg. LL-27-21. Housing LL.18. Bronze Bearing LL.1. Armature Shaft deleted. D.72183 Comm. End Bearing Bracket modified to Drg. LL.26 Oil Thrower on Armature Shaft - deleted. Remaining parts to standard Motor D.72175. These features are the result of several modifications to overcome troubles experienced in service, i.e. overoiling, which got on to the commutator; too much oil at the dashpot did not allow the engagement of the motor; too sluggish in cold weather, froze up entirely with freezing temperatures, such as experienced in America and occasionally at home. | ||