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).
Comparative heating tests on a ventilated dynamo.
| Identifier | ExFiles\Box 168a\3\ img301 | |
| Date | 5th May 1936 | |
| To E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} c. to MX.{John H Maddocks - Chief Proving Officer} c. to Da.{Bernard Day - Chassis Design} c. to Jnr.{Charles L. Jenner} 86099 Hs{Lord Ernest Hives - Chair}/Wst.11/JH.5.5.36. Stromberg Carburetter and Ventilated Dynamo With reference to Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}3/KW.27.4.36. and E.3/HP.2.5.36. we have now completed comparative tests made between a small dynamo in the standard condition, and the same with the uppermost vent covered with thin sheet bakelite. In each case a heating test was carried out with practically the same results. There was nothing to indicate that a smaller aera of vent was detrimental to the cooling of the machine. This, incidentally points to the limited space between field coils, and between pole shoes and armature, inside the machine, as being the deciding factor in the rate of flow of air through the dynamo and not the end bracket or vents. Hs{Lord Ernest Hives - Chair}/Wst | ||