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).
On resolving overheating issues by modifying radiator tubes with indentations for increased efficiency.
| Identifier | ExFiles\Box 24\5\ Scan362 | |
| Date | 18th October 1930 | |
| To Sg.{Arthur F. Sidgreaves - MD} From Hs.{Lord Ernest Hives - Chair} c. to Wor.{Arthur Wormald - General Works Manager} 8766 Hs.{Lord Ernest Hives - Chair}4/MJ.18.10.30. X. 766. X. 7250. X. 5250. OVERHEATING. Replying to Sg{Arthur F. Sidgreaves - MD}12/E15.10.30. R.{Sir Henry Royce} has agreed that we can on existing round tubes add the indentations to increase the efficiency. We are therefore sending a Standardisation Sheet round for this modification. We have carried out further tests this week on Brooklands to confirm the previous results. The average decrease in temperature on Phantom II is 7º all out max. speed, 6º at 60 M.P.H., 2 to 3º at 40 M.P.H. Actually, this modification to the tubes should make the radiator at least/equally efficient as the original Phantom II's which were despatched and which as far as we know we had no complaints on. The reason we suggested that a modified radiator should be sent to Mr. Nicolls in Italy was because he appeared to be in great difficulty, and also the conditions out there appeared to be such that he could make comparative tests. If we have a customer near to hand which it would be useful to give a new radiator to, we are in entire agreement. We anticipate, however, that our overheating complaints will have disappeared now until next summer. This, however, must not prevent us doing all we can to the radiator. Hs.{Lord Ernest Hives - Chair} | ||