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).
Modifications to the flywheel and crankshaft flange to reduce weight and improve bolting.
| Identifier | ExFiles\Box 14\2\ Scan099 | |
| Date | 27th March 1931 | |
| R.{Sir Henry Royce} FROM E.{Mr Elliott - Chief Engineer} C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} C. to HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} X 7010 E1/M27.3.31. P. 2. LIGHTER & STIFFER FLYWHEEL. X.7010. X.7300. Regarding your recent memo, with reference to the above, the stiffer crankshaft flange and flywheel we understand are being produced to Lec. 2674, of 16.2.31., (of which you have a copy,) and we are relying on the rear half of the flywheel in aluminium for a quick test to reduce weight and overhang. We attach herewith a print of the standard clutch and flywheel, so modified from which it will be seen that the alterations should make a considerable difference. In the meantime we are working on the design to make a back plate in aluminium suitable for production. One remaining point is the bolting of the flywheel to the crankshaft. There are at present only 6 bolts in a flange of considerable dia., resulting in a circumferential pitch of about 3.5" we think that 9 bolts would be preferable even if the next size smaller. E.{Mr Elliott - Chief Engineer} | ||