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).
Design modifications for a side wheel carrier to prevent it from working loose.
| Identifier | ExFiles\Box 103\5\ scan0143 | |
| Date | 19th January 1932 | |
| DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} c. E.{Mr Elliott - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} c. RY/DD X5600. BY.15/G.19.1.32. J.111 - SIDE WHEEL CARRIER. Referring to DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork}2/M.16.1.32. and dealing with the last paragraph in particular, we found that with either a taper headed bolt fitting into the plate to which the wheel is clamped or with a square headed bolt abutting on same, it was not possible to keep this piece tightly clamped, and it worked loose regularly in service and on the 10,000 mile test. We therefore introduced on the outside of the plate i.e. underneath the head of the bolt, a stiff clamp, with the object of clamping the plate carrying the wheel firmly between the bracket on the tube and the clamping plate in question. The two small screws above and below were merely locating pieces to prevent the part twisting. I am certain that what you show on N.Sch.3414 in the way of a boss, to which the plate carrying the wheel is to be clamped is putting us back into the serious trouble we experienced in 1929. We would suggest putting in a stiff clamping plate, and lengthening the vertical face carried by the boss on the upper end of the tube. To prevent it turning we would use dowels. BY.{R.W. Bailey - Chief Engineer} BR [Stamp]: RECEIVED -2 JAN 20 | ||