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.
| Identifier | ExFiles\Box 129\3\ scan0109 | |
| Date | 14th February 1936 | |
| IMO BORG & BECK CLUTCHES BORG & BECK COMPANY, LTD. TACHBROOK ROAD, LEAMINGTON SPA, WARWICKSHIRE. Index No. Date 14.2.36 MAKE OF VEHICLE ROLLS ROYCE TYPE MODEL 20/25HP YEAR SERIAL No. SPECIFICATION Weight Total Loaded Weight of Vehicle Up to 2 tons Pay Load 5 passengers Engine Make of R.R. Model 20/25HP Class (Petrol or Diesel) Petrol Bore 3-1/4 Stroke 4-1/2 Number Cylinders 6 Torque Maximum 200 Lbs. Ft., and at 1750 Revs. Max. Revs. of Engine 5000 Flywheel Weight As on Bentley Installation 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 Unit Actuation Ratio of Disengaging Leverage 8.85/1 Method of Actuation. Manual If Automatic Type Drawings Customer Installation Drawings attached Nos. and Description Remarks: Data obtained 14.2.36 BORG & BECK COMPANY'S RECOMMENDATIONS Type 11 A3 Spec. No. BB.252 Release Bearing Customer Spline 1-1/4" x 10 Disc. Spring Special Yellow Springs Wt. Designated 105-115 lb. (Green) Quantity 12 Drawings and Installation SK.30600 Actuation Recommendations Dates Made 14th February 1936 Remarks: Release Bearing Pressure to release Clutch = 300 lb. AUTOMOTIVE DIVISION | ||