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).
Standardization and performance of silent tread tyres.
| Identifier | ExFiles\Box 45\2\ Scan343 | |
| Date | 30th April 1931 | |
| To PN.{Mr Northey} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} C. X4050. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/KT. 34.4.31. SILENT TREAD TYRES. With reference to PN.{Mr Northey}3/WT23.4.31. will you please say if Sales Dept like the appearance of these tyres. As we have previously pointed out, the history of this tyre problem is that we have standardised an improved silent tread tyre which has a resistance to skidding within about 4% of the triple stud pattern. We think that you will agree that this difference is about as small as we expect to get in view of the degree of silence obtained. Therefore we take it that the only objection to these tyres is their appearance. This being so, before we start tests on any other tyres, we should like to know if London agrees that they look allright. Should you approve of the tread pattern, we recommend that you should order a set of tyres for one of your trials cars so that you will be able to keep them under observation, at the same time as we are making any tests. We have already satisfied ourselves that they are relatively silent. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||