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 Michelin providing a table of maximum axle loads for various cable tyre sections and corresponding inflation pressures.
| Identifier | ExFiles\Box 39\2\ Scan108 | |
| Date | 22th October 1921 | |
| X3538 MICHELIN TYRE Co. LTD. TELEGRAMS: PNEUMICLIN PHONE LONDON TELEPHONE: 4400 KENSINGTON. (6 LINES) Messrs. Rolls Royce Limited., 14/15 Conduit Street. W.1. 81. FULHAM ROAD, LONDON, S.W. 3. ackd 24.10.21 SF WHEN REPLYING PLEASE QUOTE REFERENCE No. AL/8 22nd October. 1921. STAMP: M.D. RECEIVED OCT 24 1921 Dear Sirs, In reply to your letter of the 15th instant, reference Spg/DG15.10.21 we have pleasure in giving you below a table showing the maximum load per axle for each section of tyre. we advise for a given inflating pressure:- Cable Tyres Section | Maximum load per axle Cwts | Pressure per Sq. Inch | Single Cwts | Twin Cwts | 90 | 16 | | 70 | 14 | | 62 | 12 | | 55 105 | 18 | | 70 | 16 | | 60 120 | 24 | | 70 | 20 | | 60 | 18 | | 55 120 | | 42 | 70 | | 36 | 60 | | 30 | 55 135 | 32 | | 70 | 28 | | 60 | 25 | | 55 MICHELIN CÂBLÉ means The Mile at pre-war Cost! LEFT MARGIN: ALL CORRESPONDENCE SHOULD BE ADDRESSED TO THE FIRM & NOT TO INDIVIDUALS. BOTTOM LEFT STAMP: NATIONAL SCHEME FOR DISABLED MEN. | ||