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).
Inertia machine test graph showing coefficient of friction and temperature against the number of stops for a Bentley brake material.
Identifier | ExFiles\Box 141\3\ scan0158 | |
Date | 27th July 1932 | |
BRITISH BELTING & ASBESTOS LTD. SCANDINAVIA MILLS, CLECKHEATON, YORKS., ENGLAND. INERTIA MACHINE TEST. TEMP. DEGREES. F.{Mr Friese} C. COEFFICIENT OF FRICTION. NUMBER OF STOPS. COEFF. OF FRICTION. TEMPERATURE. Material: MINTEX N.M.T. COMP. 2"x¼" Bentley. Brake Rig: STANDARD B.B.A. Drum: CAST IRON. Time Interval: 2 MINUTES. Flywheel R.P.M. 955. Drum Speed: 3,000 Ft./Min. Power Absorption per Stop 214,000 Ft. Lbs. 29,600 Kg. Metres. Weight Loss: 12.0 Gms. Wear Factor 0.405 H.P. Hrs per Gramme. Date 27 JULY 32. Test No. C.242. I.M. Mark. | ||