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).
Blueprint showing the section and front view of a proposed 4 1/2 x 19 wide track wire wheel.
| Identifier | ExFiles\Box 159\1\ scan0177 | |
| Date | 23th January 1928 | |
| SCHEME 1365 PROPOSED "WIDE TRACK" 4 1/2 X 19 WIRE WHEEL SECTION FRONT VIEW SHOWING SPOKES IN WELL ONLY 4 1/2 x 19 14 SPOKES 28 SPOKES TYPE N2 SHELL 1.975" 3.15" DISH VALVE HOLE 90° TO BALANCING DEVICE 25 5/7° 115 5/7° TO BALANCING DEVICE Note! 3 PAIRS OF DEPRESSIONS SPREAD TO SUIT BALANCING DEVICE. Dunlop Rim & Wheel Co. LTD COVENTRY. NAME OF CAR Rolls Royce 20.HP PAINT REF. R.G.B. DATE 23.1.28 DRAWN FCD TRACED FCD CHECKED FCD 1865 | ||