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).
Test report on Dunlop straight-sided tyres, tracking mileage, routes, and remarks including a failure.
| Identifier | ExFiles\Box 45\1\ Scan082 | |
| Date | 21th August 1920 | |
| [Handwritten Initials]: JAS Tests on Dunlop straight-sided tyre. for week ending 21st. August. Tyre pressures - 70 lbs. rear. 65 lbs. front. Table Data: Headers: Date. | Tyres fitted | Position on car. | Total miles run. (F) (R) | Daily miles. | Route taken | Remarks. Row 1: Date: 16.8.20 Tyres fitted: FD.{Frank Dodd - Bodies}1648, FD.{Frank Dodd - Bodies}1908, FD.{Frank Dodd - Bodies}2460, FD.{Frank Dodd - Bodies}2159 Position on car: N front, O front, N rear, O rear Remarks: Experimenting on Car. Row 2: Date: 17.8.20 Tyres fitted: " Position on car: " Total miles run: 4266 4266, 473 514 Daily miles: 34 Route taken: Local runs. Remarks: FD.{Frank Dodd - Bodies}1908 O.S. front tyre tread broken away from canvas as per sketch of tread. [Sketch of a tyre tread block pattern] Row 3: Date: 18.8.20 Tyres fitted: " Position on car: " Total miles run: 4327 4327, 534 575 Daily miles: 61 Route taken: Derbyshire. Remarks: Roads moderate. Average speed 25 MPH. Row 4: Date: 20.8.20 Tyres fitted: " Position on car: " Total miles run: 4657 4657, 864 905 Daily miles: 330 Route taken: Derby to Wales. Wales to Derby. Remarks: Roads dry - bad conditions in places. Average speed 20 MPH. [Footer]: R.{Sir Henry Royce} R.{Sir Henry Royce} .2354 (100 T) S. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 643, 19-2-20. G2615 | ||