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).
Efficiency of square versus round radiator tubes and bonnet ventilation designs.
| Identifier | ExFiles\Box 24\5\ Scan371 | |
| Date | 30th October 1930 | |
| COPY. x 766. To Wor.{Arthur Wormald - General Works Manager} From Hs{Lord Ernest Hives - Chair}/An. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}1/M330.10.30. Re. Radiators and Bonnets. X.7250. X.1085. X.5250. X.766. X.7250. X.5260. With reference to Sgl8/E.27.10.30. We think that the real facts that R.{Sir Henry Royce} had in mind when he said that he was disappointed with the square tubes, were that they shewed insufficient improvement over the dented round tubes to warrant the additional expense. Actually, however, we do gain as much from indentation as the round tube and this is what we are at present testing. When we have obtained our results it will be entirely a question of balancing expense against efficiency,. It would appear that we may be able to obtain a square tube that is only slightly more expensive than the round tube with a gain of 6° - 8°C. With reference to Bonnet ventilation. We shewed the horizontal louvred bonnet to R.{Sir Henry Royce} on Tuesday and he admitted that in view of the amount of rivetting entailed, it was disappointing. He said that he would definitely design a bonnet shutter on the lines of the one PN.{Mr Northey} saw at Paris Show. In view of these facts, we think we should wait for R's. design, though experimentally we have made up one or two sets of different sorts which we thought might be suitable to influence R.{Sir Henry Royce} in the right direction. Hs{Lord Ernest Hives - Chair}/An. | ||