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).
Modifying the front brake direct leverage system on a chassis lacking a gearbox countershaft.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan189 | |
| Date | 23th February 1929 | |
| ORIGINAL SECRET. BY.{R.W. Bailey - Chief Engineer} FROM DA.{Bernard Day - Chassis Design} C. to SG.{Arthur F. Sidgreaves - MD} HS.{Lord Ernest Hives - Chair} DA{Bernard Day - Chassis Design}2/M23.2.29. L.H.SS.{S. Smith} FRONT BRAKE DIRECT LEVERAGE. X7772 As we have no gearbox countershaft we find some difficulty in obtaining the new direct braking on this chassis and suggest on N. sch. 2838. herewith that it should be done by increasing the set in the tubular member. By laying the bolts of the bracket horizontal the floor is cut into scarcely any more than on SS.{S. Smith} We were reluctant to raise the cross member on the R.H. SS.{S. Smith} because it is a restriction on the lowering of the floor should it ever be possible, but on further consideration we think the advantages outweigh the disadvantages, and we now suggest that it should be done on both chassis. It will be seen that by this scheme we are able to improve the cam angle to 35°. In the case of SS.{S. Smith} the countershaft ratio returns to 1 to 1. DA.{Bernard Day - Chassis Design} | ||