Proposals for the propeller shaft and universal joints on the 'Kite' chassis.
| Identifier | ExFiles\Box 105\2\ scan0059 | |
| Date | 16th December 1920 | |
| To R from DA. {Bernard Day - Chassis Design} Copy to BH. [Strikethrough] Copy to RFC. x4254 DA {Bernard Day - Chassis Design} 2/CB15-128-20. X.4234/5 Re "Kite" Chassis - Propeller Shaft & Universal Joints. We send herewith a print of "N" Scheme 688 shewing some proposals for the universal joints and propeller shafts. The shaft turns out to be rather long, and even at 2" dia. the whilring speed is only 3,900, but as this shaft appeared to be very big, we did not care to go larger than that. We shew three alternatives for each type of joint. In Fig i and Fig 4 is shewn an adaptation of the existing "Northcliffe" joints with oil retaining device. The joint on Fig 1 has the trunnion piece mounted on the back axle and the fork on the propeller shaft, and accordingly on Fig 3 we shew an inverse arrangement which would have the effect of slightly increasing the overhang, except that we suggest that the outer ball bearing on the back axle might be mounted on the boss of the joint fork, which enables us to get the joint in the same position with reference to the bearing, as in Fig1. The arrangement shewn on Fig 3 also has another advantage, in that it enables the thrust race and the ball joint fork to be pulled up tight without pinching the outer bearing. We have shewn on Fig I a ring with a half-round section as being an easy stamping, but in Fig 2 we suggest a method that is perhaps lighter, in which the section is bhanneled. The sliding joint on Fig 4 has the driving pillars solid with the driving flange, which itself is castellated on to the 3rd motion shaft of the gear box. In order to reduce the overhang [Stamped text: DEC 16 1920] [Footer text, upside down: R.R. 255A (100) (T.) (S.G. 643. 19-2-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2013] | ||
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