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).
Experimental Department 'B' weekly report detailing reports sent and weight calculations for fitting double rear brakes.
| Identifier | ExFiles\Box 3\2\ 02-page024 | |
| Date | 22th April 1913 | |
| From Exp. Dept. Copies for: Mr Johnson Mr Royce. AV/TEH/L22413 April 22nd. 1913. EXPERIMENTAL DEPT. 'B' WEEKLY REPORT. Reports have been sent in on the following :- X.317 Ionides Clutch. X.174 Thinner metal pedal gap plates. X.309 Specially packed H.T. coil for quietness. Y200 X.306 Peto and Radford Lighting sets. X.2 - Double Rear Brakes. I give below some weights of the parts which are affected by the fitting of these brakes as at present designed. Weight added to chassis. Double brake axle with) lbs torque tube and plain } 551 wood wheels 895 x 135 } (no tyres) Differential brake cross) shaft & brackets, brake } 13.6 ropes & pull rod. ) Total weight added. 564.6 Weight removed from chassis. Standard axle with torque lbs tube & plain wood wheels 474 895 x 135 (no tyres) Central brake drum, shoes and brackets. 36.6 Total weight removed 510.6 Weight added to chassis 564.6 lbs Weight removed from chassis 510.6 R.{Sir Henry Royce} Increase in chassis weight. 54 lbs. * If we dispense with the damped spring drive coupling and fit | ||