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).
Log sheet detailing tests on Dunlop straight-sided tyres for the week ending 2nd August.
| Identifier | ExFiles\Box 45\1\ Scan065 | |
| Date | 2nd August 1920 | |
| Tests on Dunlop straight-sided tyres for week ending 2nd. Aug. Tyre pressure - 80 lbs. in rear - 65 lbs. in front. Date. | Tyres fitted. | Position on car. | Total mileage. F.{Mr Friese} | Total mileage. R.{Sir Henry Royce} | daily mileage. | Route taken. | Remarks. 18.7.20. | FD.{Frank Dodd - Bodies}2012, FD.{Frank Dodd - Bodies}3168, FD.{Frank Dodd - Bodies}1908, FD.{Frank Dodd - Bodies}1648 | O rear, N rear, O front, N front. | 2630 | | 694 | | HOLIDAYS. From the 1st. July to the 18th. (including 18th.) the car run on front tyres only. Average speed 25 MPH. 19.7.20 | " | " | 2651 | 1957 | 21 | Local runs. | Average speed 25 MPH. 21.7.20 | " | " | 2695 | 2001 | 44 | " | " " " 23.7.20 | " | " | 2774 | 2080 | 79 | " | " " " 24.7.20, 25.7.20 | " | " | 2946 | 2252 | 172 | " | " " " 26.7.20 | " | " | 2960 | 2266 | 14 | " | " " " 27.7.20 | " | " | 2969 | 2275 | 9 | " | " " " 28.7.20 | " | " | 3037 | 2343 | 68 | " | Rear tyres changed over. 29.7.20 | " | " | 3064 | 2370 | 27 | " | " " " 30.7.20 | " | " | 3135 | 2441 | 71 | Derby to Wales. | " " " 31.7.20, 1.8.20 | " | " | 3288, 3425 | 2794, 2731 | 153, 137 | Run in Wales. | Average speed 20 MPH. Bad stretches of road. 2.8.20 | " | " | 3629 | 2774 | 204 | Wales to Derby. | " " " Total mileage of tyres - N.R. 2935 O.F. 3629 O.R. 2774 N.F. 3629 O.R. burst tyre - worn through 2.8.20. N.R. 161 - FD.{Frank Dodd - Bodies}1999. R.R. 256a 100 T | ||