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).
Tappets, engine performance, and clutch operation, including performance figures and modifications.
| Identifier | ExFiles\Box 91\4\ scan0133 | |
| Date | 24th July 1935 | |
| (3) TAPPETS. Dirt under the valves, supply getting choked. The noise is not coming from the bottom tappets and if wear of these parts were taking place, we should have excess clear-ance. This is not so, if anything the reverse. We should like a new Tecalemit filter for the tappets. We have had a go at cleaning ours, but it is unsatisfactory with these kind of filters. With our attention to the timing, contacts, and plugs, cold air to Carburettors, the Car is running like a bird.(as the phrase goes.). We can go straight up to 85 without hesitation, and I should say easily beat your 85.1 MPH. The Engine is really running fine, and generally, although against the grain, we have every hope of being a fine Car. CLUTCH. Our Specification gives as the Clutch lining G 82602. It does not state make. We have not changed the linings, they are still the same as when we left Derby. A new set was brought out (Ferodo's) by Fisher, but I would not let him fit them as I was on with my scheme of checking the oil escape from the rear bearing. Since this has been such a success, the Clutch has dried out and no sign of slipping is taking place. The engagement is good, one can get a slight grabbing effect if you are out for it. You have not passed any remarks re the scheme we have fitted, but it is a 100% job which has never been attained before, and is a practical job without umpteen hours being spent on in the design office. I thank you for the enclosed, and A.B.R. would appreciate one. ---------------- G.W.Hancock G.{Mr Griffiths - Chief Accountant / Mr Gnapp} W. H.{Arthur M. Hanbury - Head Complaints} | ||