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).
Specification sheet detailing the weights of Dunlop standard and well-base wheels for the Goshawk model.
| Identifier | ExFiles\Box 42\1\ Scan021 | |
| Date | 19th November 1925 | |
| Y3809 19.11.25. Dunlop standard (Goshawk) unbalanced. Wheel 32 X 4 1/2 38 1/2 lbs. Cover 32 X 4 1/2 26 1/2 lbs. Tube. " 3 lbs. 13 ozs. Fitted complete 68 lbs. 13 ozs. Dunlop well-base - Goshawk (unbalanced). Wheel 5 1/4" dia. for 21" rim 29 lbs. 2 ozs. Cover " " " " 26 " 0 " Tube " " " " 4 " 2 " Fitted complete 59 lbs. 4 ozs. HAYDEN CROYDON | ||