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).
Instruction sheet detailing steering test results with different tyre pressures and types.
| Identifier | ExFiles\Box 80\1\ scan0118 | |
| Date | 29th January 1923 | |
| RR 26 (10H BKS) (SH 688 5-11-20) MP 231103 43791A ROLLS-ROYCE LTD. INSTRUCTIONS. To Mr Hines Order No. Steering Tests Customer's No. Table 1: 5EX fitted with 895X150 canvas tyres Tyre Pressure | 1st Test lbs | 2nd Test lbs 100 | 15 | 56 60½ 80 | 17 | 61 110½ 60 | 19 | 64 66½ 40 | 22 50½ | 77 110½ 40 | 22 80½ | 109 Table 2: 5EX friction in O.S. pivots Cord Tyres. Tyre Pressure | [1st Test] | [2nd Test] 100 | 36 | 96 80 | 37 20½ | 96 60 | 37 20½ | 99 40 | 37 20½ | 109 20 | 42 | 134 Signed This Sheet must be filed on completion of the work. | ||