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).
Specifications for wheels, springs, and axles for the B.50 and B.III car models.
| Identifier | ExFiles\Box 111\2\ scan0308 | |
| Date | 4th March 1938 | |
| -2- The wheels should be 16 x 6½. in the meantime, the semi-floating axle with hubs to suit and disc wheels for 7" tyres will go forward, and when they are completed they can be fitted to this first B.50 car. All the material then removed from the car will be directly useful for the second B.III. We recommend that the first three B.III's should run about with the present type of hubs, and all the B.50, ultimately, with the semi-floating axle and wheels to suit. There is no doubt that from Gry{Shadwell Grylls}'s conversation with Daniell, the present Bentley hub can be made satisfactory for this weight of car. We should like the specification for the first B.50 to include the 8½" initial deflection front springs, and 6" rear springs, which Ev.{Ivan Evernden - coachwork} states are the lowest ratings we can accommodate. We should like the decision as to whether we use 16 or 17" rim on the B.50 to be deferred until we have done some tests on the B.III on deflated tyres, etc. The first car, undoubtedly, will be quite satisfactory to run about with the same wheels and tyres as the first B.III. When we have finally settled the specification of the B.50, we suggest that you amend My10/G.13.1.38. to include the altered data and advanced features. You will recollect that when you wrote this memo you covered yourself by saying it was a "rough" programme only. Our biggest concern on this first B.50 is that Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}4/MB.24.2.38. items 1, 2 and 3, are all concerned with the same section, and we cannot start mounting the body until they have been completed. The other items of the car can be fitted during, or subsequent to, the body mounting, i.e., they are likely to have 3 weeks grace. Rm.{William Robotham - Chief Engineer} | ||