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).
Crankshaft connecting rod pin and suspension test results for a Bentley Trials Car.
| Identifier | ExFiles\Box 82\3\ scan0321 | |
| Date | 21th May 1935 | |
| LES- Y/200a 25 Rue Gide LEVALLOIS-PERRET. Seine. France. 21st May 1935. To. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} From. G.W.H. We have got the Crankshaft connecting rod pin ground. It is approximately .005 under size, the diameter being I.99I5 ". I have given the dimensions to R.H.C. and hope to receive the new rod very shortly along with the rivets, bolts etc. I went out with Sr on the Bentley Trials Car with an extra leaf fitted to the front springs, also with non-controlled dampers fitted, set with a load of I00 lbs. The extra leaf in the springs was an improvement to the steadiness of the steering, and actually gave a softer ride. The non-controlled dampers in front, gave better results up to a speed of 65 MPH. above this speed more load was desired. We have therefore come to the conclusion that for Continental roads, for the general customer's requirements, the controlled damper initial load should be I00 lbs. or 90 lbs. with an extra leaf fitted to the road springs which gives the best results. With this setting the slow, medium ride is on the hard side, but the comfort at all other speeds and conditions, outweigh this slight disadvantage. The steering in particular is really good, selective, and no reaction except under one condition of road. --------- G.W.H. | ||