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).
Letter from W. H. Colt Ltd. regarding preliminary test results for a bonnet device and alternative fan systems.
| Identifier | ExFiles\Box 119\3\ scan0199 | |
| Date | 15th February 1932 guessed | |
| X1085 W. H.{Arthur M. Hanbury - Head Complaints} COLT. LTD. BETHERSDEN NEAR ASHFORD - KENT - TELEPHONE BETHERSDEN 6 TELEGRAMS COLT BETHERSDEN KENT BUSH HOUSE ALDWYCH LONDON. W.C.2 LONDON DIRECTOR: I. J.{Mr Johnson W.M.} O'HEA. F.C.I.S. TELEPHONE AND TELEGRAMS TEMPLE BAR 5112 EXTENSIBLE UNITS WHC/V/P LID{A. J. Lidsey} Messrs Rolls-Royce, Ltd. D e r b y . Attention Mr Lidsey: Dear Sirs, We are obliged for your favour of 5th inst. with regard to preliminary tests made with our bonnet device and before passing comment as to the results obtained by you we should prefer to have your views after completion of final tests. We have of course definite data as to the actual capacity of the device at rates of speed from 30 to 60 miles per hour and for this reason wonder why you should obtain so little extra extraction; the flip-flap device you mention merely releases pressure but does not function as an extractor, no suction being exerted. Whatever the outcome of your tests we still have the choice of the self-adjusting fan and the patented fan-shroud. Regarding the fan we hope to be able to advise you in the course of next week. With compliments, Yours faithfully, W.H.COLT.LTD. [Signature] [Stamp: NATIONAL SCHEME FOR DISABLED MEN] | ||