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).
Order of 12 sets of 6' balloon tyres on 20' rims for the 20 HP model.
| Identifier | ExFiles\Box 53\3\ Scan119 | |
| Date | 7th August 1928 | |
| BJ. C. R.{Sir Henry Royce} c. Her. c. Hs.{Lord Ernest Hives - Chair} ---------- X. 4565 BY4/G.7.8.28. 20 HP. WHEELS & TYRES. -------------------- In accordance with a telegram we have received from R.{Sir Henry Royce} we are ordering a total of 12 sets of 6" balloons on 20" rims. This gives the same outside diameter, and therefore the same gear ratio as the present standard medium pressure wheel and tyre. A standardisation sheet has been circulated by the Experimental Department for the wheel having a 20" rim and 6" balloon tyre. If Sales have any special cars they wish to apply these particular wheels to immediately (which appears to be one of the main factors in R's mind) will they kindly let us know. BY.{R.W. Bailey - Chief Engineer} BY | ||