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).
Cushion springing tests for a 'Paxon' Air Cushion in a wooden base.
| Identifier | ExFiles\Box 132\3\ scan0211 | |
| Date | 21th May 1930 | |
| X452 File Under Suspension CUSHION SPRINGING TESTS "Paxon" AIR CUSHION (IN WOODEN BASE). THIS CUSHION BEING FITTED WITH AN ORDINARY BICYCLE (WOOD'S) TYPE AIR VALVE WE WERE UNABLE TO CHECK OR SET THE PRESSURE. WE THEREFORE ASSUMED THAT IT WAS ALREADY CORRECT SET FOR NORMAL CONDITIONS AND TESTED IT AS SUPPLIED. [Diagram of a rectangle with dimensions 9" and 3'11"] A.{Mr Adams} QUARTER LENGTH B. HALF LENGTH BOTH A & B AT CENTRE OF WIDTH. TEST A.{Mr Adams} LOAD | DEFLECTION - INS LB | LOADING | UNLOADING 50 | - | 1.050 100 | 1.180 | 2.100 150 | 2.180 | 2.680 200 | 2.920 | 2.920 PERIODIC TIME AT 154 LB (11 STONE) = .28 SECS. FREQUENCY = 214/MIN. TEST B. LOAD | DEFLECTION - INS. LB | LOADING | UNLOADING 50 | - | .780 100 | .850 | 1.600 150 | 1.700 | 2.100 200 | 2.300 | 2.300 PERIODIC TIME AT 154 LB (11 STONE) = .3 SECS. FREQUENCY = 200/MIN. TEST A1. THIS TEST WAS TAKEN AFTER UNLOADING TEST A (I.E. WITHOUT TAKING OUT THE "SET") P.T.O. | ||