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).
Inter-office letter discussing the performance of a 'Hot Throttle' and the car's induction system.
| Identifier | ExFiles\Box 50\3\ Scan220 | |
| Date | 6th July 1922 | |
| H. {Arthur M. Hanbury - Head Complaints} R. {Sir Henry Royce} A. {Mr Adams} 25 25m. 12-20-20 40849 X4305 INTER-OFFICE CORRESPONDENCE ROLLS-ROYCE OF AMERICA, INC SPRINGFIELD, MASS. CONFIDENTIAL Oy4-W-7622 To: Mr. Hives From: Mr. Olley PERSONAL July 6, 1922. Dear Hives: Re Hot Throttle Many thanks for your letter on heated throttle. We appreciate very much your kindness in sending this to us for our observation, and we shall certainly give it a very thorough tryout, both in the hot weather and in the cold weather of next winter. As I think I have indicated to you in recent letters, we are convinced that our induction system as it stands at present is very much ahead of the average automobile of this country or of any country, which is proved by our high ton-miles per gallon, even with inferior gasoline, by our freedom from carbonization, and freedom from loading and crankcase dilution in winter time. We have got a better perspective on our induction system since talking with the makers of the Pemberthy reatomizer who found that we were the only car whose performance on the dynamometer they were unable to improve. The only criticism we can make of our induction system is a - that on cars received on test occasional ones will be met with which give trouble from loading, and it is necessary to swap carburetters to overcome the trouble. b - the cars are still slightly sensitive to water temperature, though not nearly so much so as before we fitted vaporizers. These disadvantages, however, are quite minute, and even in these respects we are very much ahead of current practice, since we have not found a single car of other makes which will not load violently after a long pull, while many of them lose power below 15 miles an hour. In addition to this, most of the large cars are sensitive to temperature though some of the smaller engines are com- | ||