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).
Letter from Paul Quinn Ltd. discussing a heat-resistant material for flywheel and clutch applications.
| Identifier | ExFiles\Box 170\1\ img031 | |
| Date | 20th October 1938 | |
| PAUL QUINN LTD. PAGE 2. 20/10/38. This material is unaffected by engine oil and is perfectly capable of withstanding temperatures up to 180°C. with no change in its characteristics. The design we send you is only diagrammatic but if you prepare any similar design for an actual engine, we should be very pleased to mould the rubber and bond it for you. The small bolted-in ring in the centre of the flywheel running in the two ferodo bushes is necessary in order to allow of the insertion of the parts of the mould which define the shape of the rubber insert. We have applied provisionally for a patent to cover this application. There is not so much need for a solid and rigid and strong attachment of the hub to the crankshaft as with the normal type of flywheel fixing, since torque stresses between the crankshaft and the flywheel are limited by the presence of the rubber and owing to the elimination of the top crankshaft period. Another application of Libudine which might interest you is that it can be used to cement clutch linings on to the driven plate and a plate treated like this has been heated to 300°C. without the lining dropping off. The process is to paint the plate and the disc with Libudine paint and place the two together in a steam heated press. A substitute may be made if no steam heated press is available by placing the two between two previously heated steel rings and pressing. Obviously when the rivets are eliminated from the clutch plates, then either thinner rings may be used or there is an increase in the amount of lining which may be worn away. Yours sincerely, F.{Mr Friese} Tresilian Enc. | ||