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).
Practicality of suspension schemes, specifically the articulation of rear wheels and an analysis of the Dubonnet system.
| Identifier | ExFiles\Box 154\1\ scan0042 | |
| Date | 30th November 1932 | |
| HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} FROM R.{Sir Henry Royce} X3873 R1/M30.11.32. C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} PN.{Mr Northey} DA.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} BY.{R.W. Bailey - Chief Engineer} HDY.{William Hardy} X7410 X5410 CAR WORK - SUSPENSION. We have long agreed that the front wheels ought to be articulated so that gyrostatic forces do not occur. I cannot see any reason to make the rear ones the same. Most of the schemes are very impractical. Dubonnet has done one clever thing - for the particular design he has adopted - in twisting the whole box round the king post, and therefore the deflection of the road springs does not alter the inclination of the pivots, but this is natural to other designs, and I do not think much of the Dubonnet scheme is practical, including the very flexible springing, because of the change of bump clearance with change of load. R.{Sir Henry Royce} | ||