Blueprint detailing the dimensions of a low pressure Magna balloon tyre and its rim.
| Identifier | ExFiles\Box 157\1\ scan0085 | |
| Date | 30th June 1932 | |
| REVISIONS 7.9" INFLATED WIDTH 5.5" RIM WIDTH 7.5" SECTION HEIGHT 14" EFFECTIVE RADIUS 31" INFLATED DIA. 16" RIM DIA. 5.5 E RIM WHERE GAUGES & FITS ARE INDICATED USE 'NEWALL' STANDARD TOLERANCES. RECORD No. D.M. 4951 LOW PRESSURE BALLOON TYRE (MAGNA) 7.50 - 16 INFLATED SECTION ON 5.5 E RIM. DUNLOP ORG No. PART No. PATT No. No. REQD PART NAME MATERIAL REMARKS DEPT DATE DRAWN BY DATE: 30.6.32 CHECKED BY PASSED FOR MANUFACTURE SUPERSEDES TRACED BY APPROVED BY SUPERSEDED BY SCALE RECORD No. DM. {D. Munro} 4951. | ||
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).