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).
Comparative endurance testing of road wheel enamelling from Dunlop versus Rolls-Royce's own process.
| Identifier | ExFiles\Box 74\4\ scan0029 | |
| Date | 3rd March 1925 | |
| Mr Hancock Please arrange on next car for France HS{Lord Ernest Hives - Chair} X4107 Wd.{Mr Wood/Mr Whitehead} Hs.{Lord Ernest Hives - Chair} [Strikethrough] BY5/H.{Arthur M. Hanbury - Head Complaints} 3. 3. 25. ENAMELLING OF ROAD WHEELS. ---------------------- There is no doubt but that the Dunlop Company have improved their enamelling process, but I am still doubtful whether their softer finish will be as durable as our harder finish, although Dunlops insist the harder finish has been proved wrong in practice. In order to settle this issue, I want Wd.{Mr Wood/Mr Whitehead} to obtain from Hs{Lord Ernest Hives - Chair}, or if Hs.{Lord Ernest Hives - Chair} has none available, get new wheels, and treat same as follows:- Three wheels enamelled by Rolls Royce Limited. Three wheels enamelled by Dunlop Company by their latest method, with two coats. The wheels could be used indiscriminately in any position, but all cars running 10,000 miles should be equipped with wheels on this plan. The instruction holds for experimental work on 40/50 HP. or 20 HP. and should also be carried out even when steel wheels are being tested. This matter is of great importance as we have in the 10,000 miles endurance test a ready and accurate method of discriminating good enamelling from indifferent or bad. These have been attended to. FWH 9/3/25 BY.{R.W. Bailey - Chief Engineer} BM | ||