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).
Recommendations for modifying a car with a marine engine for performance testing at Brooklands track.
| Identifier | ExFiles\Box 29\3\ Scan048 | |
| Date | 11th March 1912 guessed | |
| (2) Every care should be taken with the pistons, which should be of the lightest, free running and perfectly gas tight. Balance weights are particularly applicable with this engine, with, of course, lightened crank webs and pins and connecting rods. Wire wheel bosses all on one side are not good for minimum wind resistance, as pointed out by Mr Nadin, and others should be made with projection of boss balanced on each side. If these make the front wheels overhang the steering pivots and so make the steering more difficult, they should not be used. Tyres, of course, must be large enough to last out a long run. Front tyres, I should say, could be made smaller (i.e. less section). The car, being built up with marine engine (otherwise standard car, 2002, I believe) should be capable of being rigged up for similar test on Brooklands track. The best H.P. will, of course, be obtained out of the engine on the test plate before fixing finally on the chassis. As an alternative, the marine engine might be fixed in the same chassis (Sluggard 1701) after the test. It would be a greater achievement with this engine of less H.P. rating, and there does not appear to be any R | ||