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).
Weight reduction for the 'Phantom' model, comparing long and short chassis types.
| Identifier | ExFiles\Box 71\2\ scan0100 | |
| Date | 15th October 1925 | |
| R.R. 498A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. +8840 REF Hsl/LG15.10.25 To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} REDUCTION IN WEIGHT ON 'PHANTOM'. +8840 +8770 Practically the whole of the production of Phantom cars is long type chassis. We should say that the percentage of short chassis is less than 5%. The long chassis is 45 lbs. heavier than the short chassis. We should say that the further 6" on the body would make the total increase in weight approx. 100 lbs. We think in a large number of cases the long chassis is entirely unnecessary; it makes the car difficult to manoeuvre and does not improve the disposition of the weights on the axles. It will take a lot of paring to save 100 lbs. on the chassis, but by using the short chassis for open cars, xxx or other types whenever possible, we save this amount without any disadvantage. Hs.{Lord Ernest Hives - Chair} | ||