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).
Showing hand brake linkage diagrams and leverage calculations for different schemes.
| Identifier | ExFiles\Box 83\2\ scan0284 | |
| Date | 7th March 1938 | |
| MEMO. 1/7.3.38. 1 - HAND BRAKE. <- P LBS. FROM HAND BRAKE A CROSS SHAFT B C IDLER LEVER D <- R LBS. TO REAR BRAKES R = P x A/B x C/D ORIGINAL SCHEME - R = P x 3.25/2.625 x 2.5/3.375 = 0.916 P 1ST CHANGE - R = P x 3.25/2.625 x 3.375/3.375 = 1.238 P 2ND AND 3RD CHANGE - R = P x 2.625/3.25 x 3.375/3.375 = 0.81 P | ||