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).
Product design blueprint for a Dunlop 7.50-16 ELP tyre on a 6.50 rim, with dimensions and weight specifications.
| Identifier | ExFiles\Box 157\3\ scan0039 | |
| Date | 18th November 1938 | |
| PRODUCT DESIGN - FORT DUNLOP DUNLOP 7.50-16 ELP TYRE ON 6.50 RIM SKETCH NO. DS 7193 DATE 18-11-38 8.6" INF PRESS. 25 LBS/[]" COVER WT. 34-35 LBS TUBE WT. 4.4 LBS WHEEL WT. 26 1/2 LBS TOTAL WT. 65 1/2 LBS 6.50 F EFF. RAD. 14.3" DIAM. 30.9" Handwritten text: 8 x 16 7.65 (crossed out) 7.9 14.1 30.3 6.30 60 7M PWB (signature) | ||