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).
Blueprint proposal for the Bensport engine suspension system.
| Identifier | ExFiles\Box 86\5\ scan0082 | |
| Date | 28th June 1932 | |
| X 222 To R.{Sir Henry Royce} from E.{Mr Elliott - Chief Engineer} c. Sg.{Arthur F. Sidgreaves - MD} Ver. Hs.{Lord Ernest Hives - Chair} Da.{Bernard Day - Chassis Design} re Bensport Engine Suspension. Please find herewith a blueprint from a rough preliminary scheme showing one proposal for the above. We understand from Da.{Bernard Day - Chassis Design} that you rather prefer using the straight tube, having crankshaft webs at each end bolted to frame, so as to avoid having to employ a bent tube. Our blueprint shows the bent tube, but this can be readily modified to the other type. The chief point of interest is the method of carrying the feet on the crankchamber. At first we bolted these two facings on the side of the slipper flywheel housing, but this latter seemed to us to be lacking in stiffness for the purpose, and we wondered if you would consider using some compact form of box arm, in which the cross web of the crankcase, carrying No.1. main bearing formed the front web of the box, and carried the major load. This blueprint shows how we have pushed back the water pump to make room for the crossmember. This still leaves room for a projection on the side of the crankchamber, carrying the oil pump driving gears, and for the dynamo, if the rubber box type of coupling is used in the three places where the drive has to be coupled up, the exhaust pipes can still be brought down one each side of the dynamo, but with the dynamo moved back the exhaust downtakes will now be opposite cylinders No.3 and No.6. E.{Mr Elliott - Chief Engineer} | ||