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).
Fitting radiators with different types of dented round and square tubes.
| Identifier | ExFiles\Box 15\1\ Scan409 | |
| Date | 4th October 1930 | |
| RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} X7250. Hs{Lord Ernest Hives - Chair}/Rn{Mr Robinson}3/ADL4.10.30. RADIATOR TUBES. We wish to fit up another radiator with 6-7 1/2 mm. round tubes having dents in them. We consider that in view of the American tube we ought to try eight dents .030" deep in each tube arranged in the form of a spiral. We should like to keep the jig we already have for denting tubes as we may want to make some more like these since they have already given us good results. We should like you to build up another radiator with sqaure tubes E.80239, these tubes also to be dented with four dents per side .030" deep but the width of strip between the rows of tubes to be reduced from .040 to .020. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||