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 S. Smith & Sons regarding speedometer testing, revolutions per mile, reduction gear calculations, and enclosing blueprint 035b.
| Identifier | ExFiles\Box 51\3\ Scan008 | |
| Date | 29th September 1921 | |
| X4367 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR BOARD Telephone: WILLESDEN 2335-6-7. Code A.B.C 5th Edition. Telegrams: SPEEDOFAC, CRICKLE, LONDON. S·SMITH & SONS (M·A) LTD MANUFACTURERS of MOTOR ACCESSORIES Branches at NEW YORK, BUENOS AIRES, PARIS, BRUSSELS, THE HAGUE, MILAN, CAPE TOWN, JOHANNESBURG, MELBOURNE, SYDNEY, WELLINGTON, SINGAPORE, BANGKOK, SOURABAYA, Etc. Etc. Agencies in all civilized countries SHOWROOMS: 179-185, GT PORTLAND ST, LONDON, W.1. And at 122, ALMA STREET, BIRMINGHAM. 12, JACKSONS ROW, MANCHESTER. 141, BATH STREET, GLASGOW. 5A BRUNSWICK STREET, BELFAST. CENTRAL WORKS, Edgware Rd, CRICKLEWOOD, London, N.W.2. 332 Our ref: CWN/LLL Your ref: He1/LG 29th September 1921. RECEIVED Messrs. Rolls-Royce Ltd., Nightingale Rd., DERBY. Dear Sirs, :For the attention of Mr. E.W. Hives: We beg to acknowledge receipt of your favour of yesterday's date and are gratified to learn that you intend testing our Speedometer on a car fitted with mechanical drive. The revolutions of our instrument per mile are 3350 and we calculate with a 33 x 5 Tyre - 640 r.p.m. The Speedometer reduction gear should be based on the latter figure and back axle ratio. We have pleasure in enclosing herewith our Blue Print 035b, and should you require any further information on the subject, we shall be only too pleased to arrange for our Instrument Engineer to visit you at any time to suit your convenience. Yours faithfully, pp. S. SMITH & SONS (M.A) LTD. C W Nichols General Sales Manager NATIONAL SCHEME FOR DISABLED MEN | ||