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).
Cold start tests for a C6 Oil Engine using SAE10 lubricating oil.
| Identifier | ExFiles\Box 165\7\ img029 | |
| Date | 28th May 1910 guessed | |
| C6 Oil Engine (Cold Tests) Lubricating oil SAE10. Starter Motor 6" Sims or CAV. max BHP = 7.8. @ 40 lbs ft Torque — 970 RPM. (Starter) gear ratio 175 : 13 = 13.45. Maximum BHP obtained with an engine resisting torque of 546 lb. ft. Engine speed of 72 RPM. +10°F.{Mr Friese} Starter current: 460 amps. Starter Volts 19. Engine RPM = 95 " Torque = 320 lb. ft. (346 written above) BHP. = 5.8 eff = 50%. +5°F Starter current - 510 Starter Volts 18 Engine speed 85 RPM. " Torque 363 lb. ft. BHP 5.9 eff 48% -10°F Starter current - 690 Starter Voltage 17. Engine speed - 55 " Torque - 522 lb. ft. BHP 5.5 eff - 35%. -21°F Starter current 930 - Starter Voltage 15 Engine speed 25 RPM " " Torque 730 lb. ft. BHP 3.5 eff 19%. | ||