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).
Relationship between side spare wheel carriers, rear engine feet, and customer complaints of noise.
| Identifier | WestWitteringFiles\V\2January1931-April1931\ Scan050 | |
| Date | 5th March 1931 | |
| To R.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to Sg.{Arthur F. Sidgreaves - MD} Nor. c. to Da.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} Ey. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/KT.5.3.31. SIDE SPARE WHEEL CARRIERS. X.7600. X.5600. We have two possible reasons for wanting to do without the rear engine feet - (1) The full diamond mounting. (2) On cars already made we find that frequently the removal of the rear engine feet will greatly improve a bad "boomer". Removing the rear engine feet is so simple, that it would enable us to deal with customers complaints of fuss and roar, though we know that it will not be successful every time. Every car brought to us so far for this trouble unfortunately has side spare wheel carriers. The removal of the rear engine feet allows the frame to deflect excessively and consequently the spare wheels flap about. We want a scheme to make our side wheel carriers independant of the rear engine feet for torsional rigidity. Experimentally we are utilising the dashboard to tie the two carriers together. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} | ||