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 British Belting & Asbestos Ltd. regarding the surprisingly high coefficient of friction in 'Halo III' shoes.
| Identifier | ExFiles\Box 140\4\ scan0032 | |
| Date | 14th August 1937 | |
| M-1/Ja-3706. No. 2. Messrs. Rolls-Royce Ltd. 14th August, 1937. We were very surprised to have your opinion that the coefficient of friction shewn by the non-metallic "Halo III" shoes which you recently tested was as high as .5. This is entirely foreign to our experience with this type of material, and we would confirm the arrangement made at the time that you should return one of these shoes to us at your convenience, in order that we may make a check test. We remain, Yours faithfully, For BRITISH BELTING & ASBESTOS Ltd. [Signature] Research Engineer. EWS/MAF. | ||