Design of a rear brake compensating shaft.
| Identifier | ExFiles\Box 12\5\ 05-page047 | |
| Date | 12th March 1928 | |
| DA. {Bernard Day - Chassis Design} BY. {R.W. Bailey - Chief Engineer} HS. {Lord Ernest Hives - Chair} c. to BJ. Wor. {Arthur Wormald - General Works Manager} 47330 R1/M12.3.28. EAC.10 N.SCH.2539. REAR BRAKE COMPENSATING SHAFT, ETC. X. 7360 X. 7330 I am not altogether pleased with this; it looks complicated and costly, without being wonderfully good. (a) Three bearings on shaft - 2 are very close together, therefore difficult alignment and many pieces. (b) Slotted link mechanically undesirable as detailed. I do not think for a moment it matters if the wire ropes are not parallel with the centre line. Can we not traverse the hand and foot brake so that servo pull near rear rope, and by bringing rear ropes together, say 1" per side at forward end, manage with one bearing. There would be extra overhang of the hand brake shaft perhaps, but calculations would shew this bending to be of very little importance. We generally like operating shafts to go right through. I should prefer servo lever to float torsionally and pick up differential by jaws - better mechanical job. Perhaps the tubes will have to be larger in dia. I shew a way to gain one thickness and make both bevels alike, except for length of boss and also easier to cut teeth. I should like to see a lever on each side of the differential casing, one floating at one end, and one fixed at the other. Regret I have no more time for this post. Sketch explains. (SEE ORIGINAL FOR SKETCH). R. {Sir Henry Royce} | ||
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).