Letter to W.H. Colt Ltd. regarding the disappointing test results of their bonnet ventilators.
| Identifier | ExFiles\Box 119\3\ scan0197 | |
| Date | 10th February 1932 | |
| Copy to Lp. {Mr Lappin} Wor. {Arthur Wormald - General Works Manager} Hs {Lord Ernest Hives - Chair} /Lid. {A. J. Lidsey} S/MA. February 10th, 1932. W.H.Colt Ltd., Bush House Aldwych, London W.C.2. Dear Sirs, We have completed our test on the pair of bonnet ventilators you submitted to us and have pleasure in enclosing herewith particulars of the data obtained. The results are rather disappointing, the Colt ventilators do not decrease the pressure under the bonnet very appreciably compared with a non ventilated bonnet. Our own bonnet shutters on the other hand give an appreciable improvement. We shall be interested to hear your remarks. Yours faithfully, FOR ROLLS ROYCE LIMITED. | ||
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).