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).
Confirmation of telephone messages regarding steering pivot angles and layout suggestions.
| Identifier | ExFiles\Box 2\12\ B002_X168-page182 | |
| Date | 25th September 1913 | |
| R.R. Std. Offd (XX) 2M. 25.4.13 K.P. 1014 COPY. COPY. X168 R11/P 25.9.13. To Da{Bernard Day - Chassis Design} from R.{Sir Henry Royce} Copy for Wor.{Arthur Wormald - General Works Manager} Confirmation of telephone messages of to-day :- Re Steering Pivots, one 4 1/2 degrees and one 3 degrees wheel pushed on. The pivot joint can be shortened at the top to bring stub axle central. Only trouble I can see is difficulty of lubricating the bottom pivot joint without removing wheel " see other suggestions. Re Lay-out. Make the ball joint well clear of the wheel spokes. I think it would be slightly advantageous if the wheel were 2 1/2° instead of 3°, and the pivot were 5° instead of 4 1/2°. This would make it slightly more self-righting ans be slightly better for the tyre. This arrangement so reduces the shocks that I think the cross steering tube with its spheres can remain the old standard dimension. R.{Sir Henry Royce} Stub axle should be put in hand at once 7 1/2 to 8° inclination. Also axle forging. Steering arms should be nicely round and smooth so that there shall be no over stressed edges. | ||