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).
Test report and data for a cotton belting clutch.
| Identifier | ExFiles\Box 74\2\ scan0128 | |
| Date | 19th April 1912 | |
| R.R. 582(2 1/2 H) X. 488. 2.1.12.) G 2273. X358 Section 1200 Description: Cotton Belting Clutch COLUMN 1: Date: 19/4/12 Report: 3/16" thick leather. Specially nose squeaking, soft engagement etc. also similar Dynamometer test as with thicker type. Driving nos. A.1041. C187 Date: 2/5/12 Report: Tested on 1714 gut away very nicely no squeaks same as 1/4" COLUMN 2: Report: This lid{A. J. Lidsey} on dynamometer 1714 c Max P 48 max torque 3rd gear 112 lbs max torque 1st gear 325 lbs lbs lifted | Temp. maybe 250 | 38°C 270 | 57°C 290 | -- 310 | 66°C 315 | -- 320 | 94°C 325 would not lift | ||