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 various car suspension schemes, with a focus on the Dubonnet system.
| Identifier | ExFiles\Box 17\1\ Scan097 | |
| Date | 30th November 1932 | |
| HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} FROM R.{Sir Henry Royce} x7410 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} 85410 x3873 CAR WORK - SUSPENSION. We have long agreed that the front wheels ought to be articulated so that gyrostactic 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 partciuler 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 deisgns, and I do not think much of the Dubonnet scheme is practical, including the very flexible springing, becase of the change of bump clearance with change of load. R.{Sir Henry Royce} | ||