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).
High co-efficient of friction of an Alfa Romeo clutch and its implications.
| Identifier | ExFiles\Box 178\3\ img150 | |
| Date | 21th April 1932 | |
| g/s 25/4/32 HS.{Lord Ernest Hives - Chair} FROM DA.{Bernard Day - Chassis Design} ORIGINAL DA{Bernard Day - Chassis Design}1/M21.4.32. ALFA ROMEO CLUTCH. X C4 82. We thank you for the information given. We notice that the co-efficient of friction is as high as .353. This is much more than we have ever been able to obtain on a RR. clutch. We suggest that it might be worth further investigation. From your HS{Lord Ernest Hives - Chair}8/MJ21132 - report on the Alfa Romeo engine - you obtain 56.3HP. at 3000 RPM., which is 1182 lbs. ins. mean torque, so that it would appear that the 100 lbs. ins. which you quote as being obtained with this .353 co-efficient of friction is very near the actual engine torque, and it looks as though the co-efficient of friction must be true. Do we obtain a much better M.E.P. at low speeds on the RR. where the flywheel would be less effective in smoothing out the impulses, and so cause clutch slipping? DA.{Bernard Day - Chassis Design} | ||