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).
Specification and recommendation sheet for a Borg & Beck clutch, for a vehicle with a Bentley engine.
| Identifier | ExFiles\Box 129\4\ scan0179 | |
| Date | 17th March 1938 | |
| FORM G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 8/B. Spec BB-460 BORG & BECK CLUTCHES. BORG & BECK COMPANY, LTD. TACHBROOK ROAD, LEAMINGTON SPA, WARWICKSHIRE. Index No. Date 17.3.38 MAKE OF VEHICLE Rolls-Royce MODEL YEAR TYPE SERIAL No. SPECIFICATION. Weight Total Loaded Weight of Vehicle 35 cwt. Pay Load Engine Make of Bentley Model 3 1/2 litre Class (Petrol or Diesel) Petrol Bore 3 1/4 Stroke 4 1/4 Number Cylinders 6 Torque Maximum 206 Lbs., Ft., and at 2,000 Revs. Max. Revs. of Engine 5000 Flywheel Weight 48 Outside Diameter Radius of Gyration Engine Mounting If Engine is Flexibly mounted and Articulates round Crankshaft Axis state Maximum Amount of movement at 2ft. Radius Gear Box Make R.R. Model Unit or Independent Construction Actuation Ratio of Disengaging Leverage 8.75/1 Method of Actuation Manual If Automatic Type Drawings Customer Installation Drawings attached Nos. and Description Remarks : Data obtained 17th March, 1938. BORG & BECK COMPANY'S RECOMMENDATIONS. Type 10 C.F. Spec. No. BB.460 Release Bearing Customer's Spline Disc Spring Springs Wt. Designated 125-135 (Orange) Quantity 9 Drawings and Installation 22000 Actuation CWH/199S Recommendations Dates Made 17th March, 1938. Remarks : Release Bearing Pressure = 250 to 270 225 lbs. See B.B. letter dated 28/12/38 This does not include centrifugal build up. See separate Sheet No. 22030 AUTOMOTIVE DIVISION. | ||