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).
Technical report from Chateauroux, France detailing issues and observations on damper glands, fan, breather, autovac filter, and front brakes.
| Identifier | ExFiles\Box 5a\3\ 03-page228 | |
| Date | 17th May 1933 | |
| X5840. Hotel de France. Chateauroux. Indre. 17.5.33 To Hives From G.W.H. RHC{R. H. Coverley - Production Engineer} 16. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} IV. We have received your memo He/Rn{Mr Robinson}8/KT 15.5.33. (1) DAMPER GLANDS We have fitted new asbestos glands impregnated with tallow. We note that you are sending out similar ones, but if the ones we have fitted are satisfactory it will not be necessary to again dismantle the dampers. The chief fault in our opinion is that too heavy a pressure is used when making the packings in the jig, the result being the gland is too solid and will not bed down. (2) FAN We will let you know the result of speeding up the fan. The pump is circulating the water satisfactorily at the low speeds. With regard to the ratio on the Bentley we had, there may have been a slight difference as the fan pulley only was altered by MHC and not made to any drawing. Also, this engine ticks over slower than we ever got with the Bentley engine. We did not look for the trouble, the boiling of the water made it apparent. (3) BREATHER The only dirty part about the engine is the draining of the oil out of the carburetter. We have dismantled the air silencer and will give you the results later. (4) AUTOVAC FILTER Up to the present moment ie. 2925 miles we have had no trouble by the deletion of the autovac filter. (5) FRONT BRAKES We reported on our last day's mileage report loss of braking. We suspected oil on the front brakes. Upon dismantling same we found O.S. front brakes smothered in grease. This had come out of the hub, and in the recess of the hub we found another handfull ready to drop on the brakes. In cleaning this out, we found to our amazement a 7/16 steel washer embedded in the grease, having evidently fallen into the tin of grease at the works. We think more care should be taken in this respect or serious damage might occur. The N.S. front brake was dry. Seen RHC{R. H. Coverley - Production Engineer} G.W.H. | ||