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).
Detailed engineering drawing of a 3.62-inch rim section, including dimensions and associated tooling.
| Identifier | ExFiles\Box 159\3\ scan0100 | |
| Date | 5th January 1937 | |
| LIST OF TOOLS FORMING & CIRCLING ROLLS: BO2319-30 SAWING OFF BLOCKS: STB243-4 RECIRCLING ROLLS: BO2331-3 WELDING BLOCKS: BO3605-7 JOINT ROUNDING BLOCKS: BO2334-5 CONTRACTING BLOCKS: STB240 CIRCUMFERENCE TAPES: STB52 LIMIT GAUGES: BO2336-7 MEAN GAUGES: BO2338-5 VALVE DEPN TOOLS: CO.7623-8 VALVE HOLE GAUGE: 1/BO.3535 STRIP GAUGE: VALVE HOLE PIERCING: CO.7623-8 RACING RIMS MODIFICATIONS Ⓐ MODN No 3486, REDRAIN. HOLES ALTd TO SUIT DESIGN SHT C.257 FROM C190 15-4-37 K/B Ⓑ 510/520 FROM 502 SEE DES SHT C.331 MODN No 5746 22-9-37 Y/B Ⓒ 510/520 ALTD TO 504/514 MODN No 6086 27-10-37 Y/B MODN No 7046 1/32@45° +- 1/64R ADD 11-4-38 Y/B TABLE: RACING RIMS A +0.030 -0.000: 17.083, 18.083, 19.083, 20.083, 21.083 B ±0.004 INCH: 56.81, 59.95, 63.09, 66.23 B ±0.002 M/M: 1443, 1522.6, 1602.5, 1682.2 TABLE: STD RIMS A +0.000 -0.031: 17.063, 18.063, 19.063, 20.063, 21.063 B ±0.004 INCH: 53.604, 56.747, 59.89, 63.03, 66.17 B ±0.004 M/M: 1361.4, 1441.37, 1521.2, 1601, 1680.67 C: 15.408, 16.408, 17.408, 18.408, 19.408 D INCH: 48.404, 51.54, 54.69, 57.83, 60.97 D M/M: 1229.4, 1309.2, 1389.1, 1468.8, 1548.6 MAIN DRAWING ANNOTATIONS: 3.620 +.065 .73 5/32 DIA DRAIN HOLES SEE NOTE BELOW .75" +.031 -.000 .38R .480 .615R .25R 5/16R .281R .250R .132@45° .031R .062"R 25° .656" DIA OF FLAT DETAIL OF VALVE HOLE MATL MS 12SWG(.104) STRIP 9 1/2" DRAIN HOLES ALL WHEELS - 2 OPPOSITE VALVE HOLE! (SPOKED & PLAIN DISC WHEN BONDERISED) Ⓐ TO HAVE 4 HOLES. 2 ADJACENT AND 2 OPPOSITE (VALVE HOLE) TITLE BLOCK: SCALE: - 1/1 DRAWN: F/B TRACED: CHECKED: L.S./B. DATE: 5-1-37 TITLE: - DETAIL OF 3.62 RIM SECTION. ISSUE NO: 1 MODIFICATION: SUPERSEDING RSO411 A.M. APR. DATE DIMENSIONS NOT LIMITED ARE SUBJECT TO A TOLERANCE OF ±.005". DUNLOP RIM & WHEEL CO. LTD. FOLESHILL, COVENTRY. DRG. NO RSO.549 | ||