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).
Test report on a Klaxon TW082-12V windscreen wiper detailing overheating issues and component failure.
| Identifier | ExFiles\Box 167\5\ img053 | |
| Date | 3rd March 1933 | |
| Klaxon TW082 - 12V Windscreen Wipper This wipper was run at 34 strokes per minute for 17 1/2 hrs. This condition which is reported to be on a snow covered windscreen. The motor carcase attained a temperature of 117°C when run under this condition. This temperature was attained under conditions were the applied voltage was falling. It follows that if this battery had been on charge during this test the temperature of the motor would have been increased. All the grease from the motor melted and ran out, with a result that may become very inconvenient. it is obvious that grease will melt under a temperature of 117°C but its inconvenience is rather effective. Wipper gear Box This gear box also became overheated the main wipper spindle and its bearings became loose after 10 hrs. while one of the cam pins was effected after 12 hours and became loose. L.B. | ||