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).
Gear tooth angles, wheel alloys, and lubricating oil tests for a worm axle.
| Identifier | ExFiles\Box 2\6\ B002_X 140 141 157-page163 | |
| Date | 4th February 1912 guessed | |
| (2) To avoid interference and obtain a strong section of tooth it may be advisable to use an angle of action of 22½º to 30º. Mr Bailey should set out both these angles. In this respect Lanchester's angles should be studied very carefully. To give the largest area of contact the number of teeth in the wheel should be as great as possible. The present wheels have been made in No. VII Phosphor Bronze Co. Alloy, which, although strong, is not as good as may be desired from a friction and self-lubricating point of view. We are trying to obtain an alloy with better lubricating properties, such as would be obtained by the presence of lead. A test should be made on a worm axle with a view to obtaining the best lubricating oil for the purpose. First ascertain what is recommended for the Lanchester and the Daimler. Oils which should be tried are :- (1) Lard Oil (2) Castor Oil. (3) Neatsfoot oil. (4) Gear oil which does not congeal (say Prices "A" Battersea), and [Handwritten text] we will bear all this in mind if we go on the worm axles. [Footer text] 1000 C.E.& S. 200-11-'04. N-13 | ||