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).
Stresscoat lacquer test on a Phantom III wheel rim showing crack diagrams.
| Identifier | ExFiles\Box 96\4\ scan0176 | |
| Date | 20th June 1939 | |
| STRESSCOAT LACQUER TEST ON PHANTOM III WHEEL RIM (CRACK DIAGRAMS) WHEEL DETAILS PIECE NO. G 83717 THE STRESSES QUOTED BELOW ARE BASED ON THE CRACK FORMATIONS AND CORRESPOND TO A TYRE PRESSURE OF 35LBS/□" CENTRE LINE OF RIM A' 'C' A'D' TENSILE STRESS IN RADIUS 8 -> 12 TONS/□" COMPRESSIVE STRESS IN RADIUS 6 -> 9 TONS/□" COMPRESSIVE STRESS 6 -> 9 TONS/□" VIEW OF RIM FROM CENTRE OF WHEEL 'B' E COMPRESSIVE STRESS IN RADIUS 8 -> 12 TONS/□" COMPRESSIVE STRESS 5 1/2 -> 8 TONS/□" SIDE ELEVATION OF RIM SHADED PORTIONS DENOTE AREAS NOT COATED WITH STRESSCOAT LACQUER THE ABOVE CRACK DIAGRAMS WERE DRAWN AFTER THE TYRE HAD BEEN INFLATED TO A PRESSURE OF 100 LBS/□" BL 2357 SHEET 1 | ||