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 Hardy Spicer & Co. Limited regarding varying torques and specifications for print RG2729.
| Identifier | ExFiles\Box 148\4\ scan0173 | |
| Date | 28th August 1941 | |
| Car file Hardy Spicer & Co. Limited. TELEPHONE: BIRCHFIELDS 4504-9 (6 LINES) TELEGRAMS & CABLES: AUTOJOINTS, BIRMINGHAM LONDON OFFICE: BUSH HOUSE ALDWYCH LONDON W.C.2 TELEPHONE: TEMPLE BAR 8219 1262 REGISTERED OFFICE AND WORKS BIRCH ROAD, WITTON, BIRMINGHAM, 6. OUR REF. JAD/MMF. YOUR REF. Rm{William Robotham - Chief Engineer}/GB.2/RH.{R. Hollingworth} 28th August 1941. Messrs Rolls Royce Limited., DERBY. Dear Sirs, We thank you for your letter of the 27th instant. We regret we find your question of maximum angle with varying torques too difficult to answer. If we observed the efficiency curves we would conclude the angles make very little difference, but actually couples are set up and vibrations, which cause damage to the bearing parts. Regarding print RG{Mr Rowledge}2729, this is quite in order except we should prefer to use a 2" x .064" tube which is one of our standards, and will satisfy your speed of 5,000 r.p.m. We can supply such shafts. Yours faithfully, p.p. Hardy Spicer & Co. Limited. J.A.Daniell. Director. J.A.Daniell | ||