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 necessity of heat for engine performance, summarizing results from tests on induction pipes and throttle pins.
| Identifier | ExFiles\Box 50\3\ Scan037 | |
| Date | 26th March 1921 | |
| Oy4 - G 25321 March 26, 1921 Mr. Claude Johnson - Sheet 4. (3) Necessity of Heat (Cont'd) With the pin in the throttle and a heated pipe (1" through pipe) it is difficult to make the car miss in getting away, but occasionally one or two explosions are missed, after long periods of slow speed pulling, or after running down hill with the throttle closed. This is especially noticeable when the water temperature is below 65° C. Summarizing: (a) The heated induction pipe with 1" through-pipe and interchange of exhaust, gives good results on the 15 cars (approximately) on which it has been tried. (b) The pin in the throttle gives good results in improving low speed pulling on the four cars on which we have tried it. (c) It is certainly most important to maintain the engine-house temperature. The Galli-ator, which we are fitting on 4-EX is the best device we have so far seen for doing this. Yours truly, ROLLS-ROYCE OF AMERICA, Inc. Per M. {Mr Moon / Mr Moore} Olley MO/G Enc. - 2 clippings CC Mr. Belnap Mr. Beaver Mr. Nadin Mr. Bagnall Mr. Hulley Mr. Southern Mr. Manning | ||