Two graphs comparing rolling resistance and distance rolled from rest for two different tyre types at various inflation pressures.
| Identifier | ExFiles\Box 53\3\ Scan008 | |
| Date | 6th January 1927 guessed | |
| contd :- -6a- GRAPH 1: MACHINE TESTS ON ROLLING RESISTANCE FIG 1. SPEED 50 M.P.H ROLLING RESISTANCE LBS WT/TN INFLATION PRESSURE LBS/SQ IN. 33 x 6.75 TYRE 33 x 5 TYRE GRAPH 2: DISTANCE ROLLED FROM REST YDS ROAD ROLLING RESISTANCE TESTS FIG: 2. INFLATION PRESSURE LBS/SQ IN. 33 x 6.75 TYRES 33 x 5 TYRES | ||
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).