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).
The incompatibility of low pressure balloon tyres with the cross steering levers on 40/50 HP models with 4-wheel brakes.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan7 | |
| Date | 9th September 1924 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. BJ. c. to R.{Sir Henry Royce} DA.{Bernard Day - Chassis Design} c. to RG.{Mr Rowledge} BY.{R.W. Bailey - Chief Engineer}✓ c. to Wor.{Arthur Wormald - General Works Manager}✓ ORIGINAL Hs{Lord Ernest Hives - Chair}6/LG23. 9.24. 40 / 50 H.P. BALLOON TYRES. +4565 ~~49420~~ We find that the wheels suitable for the 7" Dunlop low pressure tyres for the 40/50 HP. foul the cross steering levers on cars fitted with 4-wheel brakes. The cross steering levers on the 4-wheel brake cars were extended to clear the stiffening rib and damper on the edge of the drum. These features have now been done away with on the front wheel brake drums and we could use a shorter cross steering lever. Until this is done it will be necessary to change the cross steering levers if low pressure tyres are fitted. Hs.{Lord Ernest Hives - Chair} | ||