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 chart for a rubber moulded disc brake lining, showing coefficient of friction and temperature against number of stops.
| Identifier | ExFiles\Box 141\3\ scan0306 | |
| Date | 10th May 1934 | |
| BRITISH BELTING & ASBESTOS LTD., SCANDINAVIA MILLS, CLECKHEATON, YORKS., ENGLAND. INERTIA MACHINE TEST. TEMP. DEGREES. F.{Mr Friese} C. Handwritten: Bentley Servo Motor COEFFICIENT OF FRICTION COEFF. OF FRICTION TEMPERATURE NUMBER OF STOPS Material: 5¼" x 3" x 1¹/8" RUBBER MOULDED DISC BRAKE LINING REF. C.S.36 Test No. E.2008.B. Date: 10TH MAY 34. Brake Rig: STANDARD B.B.A. Drum: C.I Time Interval: 45 SECS. Flywheel R.P.M.: 400 Drum Speed: 1256 Ft/Min. Power Absorption per Stop: 37,600 Ft. Lbs. Kg. Meters: 5200 I.M. Mark: 9 | ||