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).
Recommending drilling ventilation holes in the starter main switch to prevent corrosion.
| Identifier | ExFiles\Box 168a\2\ img152 | |
| Date | 17th April 1935 | |
| E.{Mr Elliott - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Wst. c. to By.{R.W. Bailey - Chief Engineer} -6010. Hs{Lord Ernest Hives - Chair}/Wst.6/MA.17.4.35. STARTER MAIN SWITCH ON ALL CHASSIS. We have received complaints that condensation sometimes occurs inside this switch which causes a certain amount of corrosion to occur. Although we have never experienced this trouble we consider it is possible in view of the fact that the switch is not ventilated, and after using the starter a lot on a refractory engine during cold weather, the heat generated in the switch coils might be sufficient to cause condensation. We see no reason therefore why a small .062" hole should not be drilled each side of the cover to ventilate the switch and we recommend that this be done on production. Hs{Lord Ernest Hives - Chair}/Wst. | ||