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).
Higher gear ratio for the Peregrine rear axle casing.
| Identifier | ExFiles\Box 84\4\ scan0002 | |
| Date | 29th October 1932 | |
| X 262 BY.{R.W. Bailey - Chief Engineer} FROM DA.{Bernard Day - Chassis Design} DA{Bernard Day - Chassis Design}1/M29.10.32. C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} HS.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} B. 3. REAR AXLE. It will be necessary to have a gear still higher than the 4.1 to 1 we have already given you, and we have investigated the possibility of getting such a gear into the Peregrine casing. If we can have a pinion angle of about 35° it looks as though we could do so without materially altering the existing dimensions. We send herewith N. sch. 3577. shewing a 11/41 gear, 35° pinion angle, which gives approximately 90 MPH. at 4000 RPM. of the engine. DA.{Bernard Day - Chassis Design} | ||