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).
Fitting, cost, and potential standardisation of D.W.S. jacks on 20/25 HP cars.
| Identifier | ExFiles\Box 26\6\ Scan024 | |
| Date | 21th July 1933 | |
| To Sg.{Arthur F. Sidgreaves - MD} from Ha/Lid.{A. J. Lidsey} c. Wor.{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} c. Da.{Bernard Day - Chassis Design} By.{R.W. Bailey - Chief Engineer} x~ono Ha/Lid.{A. J. Lidsey}10/KT.21.7.33. x311? D.W.S. JACKS AND 20/25 HP CARS. We should estimate that at least 25% of the 20/25 HP. cars which we turn out now are fitted at the coachbuilders with D.W.S. Jacks. The customer pays £10.10.0 plus £1. fitting charge for this and in addition is of course landed with the standard jack as supplied with the car, the cost of which is to us 19/6d. At the request of the D.W.S. people we have modified our rear spring plate so that the jacks can be more easily fitted; this modification will appear on all 20/25 HP. cars. The present car, therefore, can be fitted with D.W.S. jacks without any further modifications. We are trying out a sample set of a lightened type of D.W.S. jack which are suitable for the 20/25 HP. car. These appear to be quite satisfactory. We understand quite unofficially that the price of these jacks in quantity would be very much less than what we pay for the 40/50 HP. jack, and is so low that it would appear to be well worth while considering the possibility of standard-ising them on this car. Actually it is very little easier to jack up the rear of a modern 20/25 car than a Phantom II when using the ordinary screw jack, and we are of course faced with the fact that D.W.S. jacks appear as a standard fitting on an increasing number of moderate priced cars. Ha/Lid.{A. J. Lidsey} | ||