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).
Performance test data for various car heater and de-icer units.
| Identifier | ExFiles\Box 137\1\ scan0308 | |
| Date | 17th November 1937 | |
| -2- Rm{William Robotham - Chief Engineer}/Std.12/MH.{M. Huckerby}17.11.37. (2) Bosch combined Heater and De-icer. - Running speed of motor/fan/blower unit - 1320 RPM. Air Head available from de-icer nozzle with normal heater air flow - 0.3" H2O. (3) Harrison 1937 type heater - Running speed - 1080 RPM. Air head available in front of matrix (doors open) - negligible. ditto (doors open) Air head available in front of fan with motor/fan unit removed from heater - 0.15" H2O. (4) Buick 1938 car heater. - Running speed of motor/fan unit - 1140 RPM. Air head available at matrix front (doors open) - negligible. Air head available at de-icer nozzle (doors shut) - 0.2" H2O. (5) Buick 1938 Separate De-icer blower - Running speed - 1440 RPM. Air head available at nozzle - 0.9" H2O. (Note when fitted onto the Buick heater, the available air head with heater working and doors shut was reduced to 0.7 H2O.) (6) Ice and Car Fan and Lucas motor as proposed for projected car heater - Running speed - 1200 RPM. Available air head behind fan - 0.15" H2O. | ||