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).
Report of a wear test on die-pressed 'Ganold' material, detailing changes in physical properties and friction coefficients.
| Identifier | ExFiles\Box 141\3\ scan0149 | |
| Date | 14th February 1933 guessed | |
| REPORT OF WEAR TEST ON "GANOLD" DIE-PRESSED. Particulars of Pieces. Thickness Specific Gravity Test Mark Dimensions Before After Before After No. 1 2.937 x .742 .292 .256 1.81 1.70 No. 2 2.937 x .749 .294 .263 1.81 1.78 No. 3 2.937 x .755 .293 .229 1.92 1.76 No. 4 2.906 x .747 .293 .249 1.99 1.87 Average .293 .249 1.88 1.78 Average wear in inches = .044 Duration of Test = 5 hours Total area of test pieces = 8.767 sq. ins. Total absorption of work = 89,199,300 ft.lbs. = 10,174,438 ft/lbs. sq.in. Rate of absorption of work = 9 H.P. Wear Figure = .00432 RECORD OF WEAR TEST. Time Load Speed Temp. at Co-efficient of Friction hr. - hr. lbs/sq.in. ft/min. end °C Max. Min. Average 0 - 1 13.68 4647 89 .566 .516 .540 1 - 2 " 4647 95 .583 .550 .566 2 - 3 " 4647 84 .583 .550 .566 3 - 4 " 4640 82 .583 .483 .533 4 - 5 " 4648 80 .483 .450 .466 Average 4646 .534 | ||