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).
The performance and faults of a dynamo, lamps, horns, heater, regulator, and petrol pump after a road test.
| Identifier | ExFiles\Box 97\4\ scan0183 | |
| Date | 23th November 1938 | |
| -12- Dynamo D.OD.214-250. This was fitted new for the road running and was not run on the test bed with No.5 unit. The top brush wore right down in 14,000 miles. The solder was thrown from the commutator; this was attributed to heat developed by sparking of the worn out brush. The bars were re-soldered and temporary replacement brushes fitted for the return journey. The total mileage of the unit was 17,000 miles. Lamps, Horns and Fittings LOP.DB.{Donald Bastow - Suspensions}1585. The Lucas R.100 headlamps gave no trouble, but several bulbs were burnt out. The Lucas LR.{Mr Ellor}140 centre lamp with dipper was a good dual purpose lamp after the range of dip had been reduced. This was done by fitting the longer plunger as used in the R.100 headlamps. The centre lamp was not anti-dazzle in the Continental interpretation of the term. The Lucas W.T.13 type wind tone horns were as abortive as usual. Car Heater and Defroster. The heater was satisfactory but the fan drive became noisy. The defroster ducts were too large in area and therefore ineffective. A modification has been made to these. Independent control for heater and defroster has been called for and is also being dealt with. Gurgling noises were audible picking up from slow speeds. A recommendation to reverse the direction of flow was tried by interchanging the pipes. This was satisfactory. The water now enters the top of the heater matrix and flows downwards. Regulator and Cut Out LOP.D.54562. Lucas 23 turns regulator. The burning out of lamp bulbs experienced indicated too high a voltage. Petrol Pump S.CD.302 mounting. The pump gave no trouble. It was noted that at max. output the units were inclined to run in phase. This is not serious but is known to reduce the output. | ||