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).
Modifications to a hypoid gear rear axle gearbox.
| Identifier | ExFiles\Box 15\5\ Scan020 | |
| Date | 28th October 1926 | |
| To BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to BJ. c. to Hs.{Lord Ernest Hives - Chair} X7310 DA{Bernard Day - Chassis Design}2/M28.10.26. EAC-9 and 10 HYPOID GEAR REAR AXLE. X.2066 X.7350 X.7310 Herewith we send N.sch.2287 shewing the slight modifications to the rear axle gearbox to enable lower ratio gears to be got in. It will be seen that we have moved the tail bearing to the rear and reduced its size. It compares favourably as regards load with the present 20 HP. bearing in the same position. The side plates have been moved out .1" a side and the axle tube shortened a corresponding amount. The construction of the differential box has also been slightly altered, otherwise the box is intended to be exactly the same as N.sch.2275. With reference to locking the nut retaining the outer housing of the Schatz bearing on the bevel wheel, it was originally intended to do this by rivetting, but we think it will perhaps be simpler to fit a locking plate as you suggest. Mr. Royce wishes the gear shewn on this drawing and on N.sch.2288 namely, 11/47., to be made, and also another gear of approx. the present ratio shewn on N.sch.2289. Since we have worked them out we also send you N.sch.2284., 10/47., and N.sch.2290., 12/47, but nothing should be done with these two until further instructions. DA.{Bernard Day - Chassis Design} | ||