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).
Completed data sheet for universal joints from the Mechanics Universal Joint Company.
| Identifier | ExFiles\Box 148\4\ scan0022 | |
| Date | 2nd December 1929 | |
| MECHANICS UNIVERSAL JOINT COMPANY ROCKFORD, ILLINOIS DATA FOR UNIVERSAL JOINTS K - DIA. OF BOLTS L - NO. OF BOLTS - Propeller Shaft - H - MAX. ADVISABLE SLIP MODEL No. OF JOINT, A, B, C, D, E, F, G, H, J, K, L, M, PROJECTED AREA PER BEARING, MAX. TORQUE OF MOTOR WITH WHICH JOINT CAN BE USED 2, 3 3/8, 1 5/8, 3/16, 13/16, 1 5/16, 3 1/2, 2 15/16, 1 5/8, 1 1/8 S.A.E. - 10C SPLINE, 5/16, 4, 3/8, .284, 80#† BASED ON AVERAGE MOTOR CAR CONDITIONS 3, 3 29/32, 1 7/8, 7/32, 7/8, 1 3/8, 3 7/8, 3 5/16, 1 3/4, 1 1/4 S.A.E. - 10C SPLINE, 5/16, 6, 11/16, .356, 130#† INDIVIDUAL REQUIREMENTS 4, 4 5/16, 1 7/8, 7/32, 7/8, 1 9/16, 4, 3 5/16, 1 3/4, 1 3/8 S.A.E. - 10C SPLINE, 5/16, 6, 15/32, .476, 170#† AND SPECIAL CASES SOMETIMES MAKE - 5, 5 1/16, 2 1/8, 5/16, 1, 1 13/16, 5, 4 7/16, 2, 1 1/2 S.A.E. - 10C SPLINE, 5/16, 6, 21/32, .565, 250#† CHANGES IN THESE FIGURES ADVISABLE 6, 5 47/64, 2 3/8, 9/32, 1 1/8, 2 1/4, 5 3/4, 5 1/8, 2 1/4, 1 3/4 S.A.E. - 10C SPLINE, 5/16, 8, 11/16, .712, 300#† 7, 6 11/16, 2 5/8, 5/16, 1 3/8, 2 1/2, 6 7/8, 6 1/8, 2 1/2, 2 S.A.E. - 10C SPLINE, 3/8, 8, 3/4, 1.024, 450#† BENJAMIN WHITTAKER Ltd. VICTORIA HOUSE, VERNON PLACE, SOUTHAMPTON ROW, LONDON, W.C.1. Vehicle Makers' Model No................... Bentley No. of Cylinders................................... Bore ..................................................... Stroke .................................................... Maximum Motor Torque.................. 178 lbs. Ft Lowest Forward Transmission Gear Ratio........ 2.75 Lowest Reverse Transmission Gear Ratio....... 2.75 Rear Axle Gear Ratio....4:1........................... Weight on Both Driving Wheels Fully Loaded... Diameter of Driving Wheels.......... 29" Is there a Transmission Brake?............. No Maximum R.P.M. of Propeller Shaft........ 4500 Maximum Angularity required........... ± 12° Average Running Angle......... 2 1/2° How is Rear Axle Torque Taken?.......... REAR SPRINGS Maximum Operating Overall Length of Complete Assembly ......... 57.300" Minimum Operating Overall Length of Complete Assembly ......... 55.650" (Supply B. P. if possible) ........................ Note: Minimum Operating Length usually results when rear wheels are suspended from springs when chassis rebounds or is lifted by other means. Is Joint Assembly to be used between Clutch and Transmission or Transmission and Rear Axle Supply B. P.'s of Transmission and Axle Shaft Ends to which Joints are to be attached. Remarks: Name of Company ........ Rolls Royce By ......................................................... | ||