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 Silentbloc detailing test results for a sample mounting, showing load vs. deflection.
| Identifier | ExFiles\Box 94\1\ scan0325 | |
| Date | 6th February 1936 | |
| Lee 9927 DIRECTORS: T.B.ANDRE H.VEZEY STRONG V.A.TRIER W.L.HARRIS SILENTBLOC LIMITED TELEGRAMS SILENTBLOC, NOTTARCH, LONDON VICTORIA GARDENS LADBROKE ROAD NOTTING HILL GATE LONDON, W.11 TELEPHONE PARK 9821 (4 LINES) SWJ/HS.{Lord Ernest Hives - Chair} 6th February, 1936. Hs{Lord Ernest Hives - Chair}/Les.8/KW. Messrs. Rolls Royce Ltd., DERBY. For attention Mr. Leslie. Dear Sirs, We have tested the sample mounting which you sent to us recently and the deflections under varying loads are tabulated below. As you will see the results are surprisingly close to the samples which we have made for you. If, as you say, the results you have obtained from 'A' mounting are the best so far, it would appear that there is an advantage to be gained through the use of stretched rubber in place of the free rubber which you employ. LOAD IN lbs. DEFLECTION IN INCHES. 100. .010. 150. .017. 200. .021. 250. .026. 300. .032. 500. .047. Yours faithfully, SILENTBLOC LIMITED. [Signature] TECHNICAL DEPARTMENT. | ||