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).
Engine and starter motor modification requirements, including crankcase, flywheel, and oil system details.
| Identifier | ExFiles\Box 3\4\ 04-page101 | |
| Date | 6th October 1932 | |
| - 2 - E.4/HP. 6.10.32. ---------- except for perhaps adjustment of back axle ratios. The J.1. engine would require modified crankcase patterns for smaller diameter flywheel, road clearance, and footboard space. Also J.3. Sequence starter motor for smaller starter ring, higher ratio, and maximum flywheel diameter. Rear end of engine would be carried on same cross member as Bensport, and front end can utilize present type 20/25 suspension adapted. We would recommend dry oil sump and double oil pump as designed for Tank installation, and carry oil tank under front apron with cooling louvres and ribs to reduce oil temperature. E.{Mr Elliott - Chief Engineer} | ||