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).
Internal memorandum regarding the design specifications for a two-wheel-only rear carrier for 'SS' cars.
| Identifier | ExFiles\Box 13\5\ Spare05-page024 | |
| Date | 14th November 1928 | |
| 47600 BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to BJ. Hs.{Lord Ernest Hives - Chair} DA{Bernard Day - Chassis Design}2/14.11.28. X.7810 X.5810 X.7600 'SS{S. Smith}' TWO WHEELS ONLY AT REAR. In view of the pressure on the Coachwork Dept. we should be very much obliged if Derby could set out this arrangement for SS.{S. Smith} as we think the information we have supplied will enable them to do. We have today sent off N.sch.2760 shewing the arrangement for India, and in N.sch.2732 you have the existing arrangement on SS.{S. Smith} We suggest that you should use the same size central bolt increased in length only as on N.sch.2760. The tubes of the supporting triangle should be increased from .875" to 1", and of course the tube in front of the wheel carrier should be 1 3/4" in diameter. The tubes and fittings carrying the number plate can be the same. The dummy hubs are of course scaled up to correspond with the wheels. If Derby could set this out and send us the result we think it would enable us to get this carrier for SS.{S. Smith} going more quickly. We believe you understand that R.{Sir Henry Royce} has agreed to N.sch.2732 on his car - i.e. 18-EX the 1st. SS.{S. Smith} - but the scheme similar to N.sch.2760 will be required on some of the following SS.{S. Smith} cars. DA.{Bernard Day - Chassis Design} | ||