Blueprint for a combustion chamber model, detailing various sections and spark plug positioning.
| Identifier | ExFiles\Box 66a\3\ scan0001 | |
| Date | 21th May 1935 | |
| CHEVROLET ENGINEERING PART NO. 0-56958 REVISIONS APV. | DATE | No. | WAS | 5-21-35 | 2 | 7 13/32 & 5 1/8 CENTER RELOCATED | 5-24-35 | 3 | DIM ADDED | 5-29-35 | 3 | 7 13/32 R & 5/8 CENTER RELOCATED | 5-29-35 | 4 | DIM ADDED | | 5 | NOTE REVISED | 6-11-35 | 6 | ADD'D 22 D'MENSION | | 7 | REMOVED 1 DIMENSION | | 8 | WAS 2 3/8 | 7-11-35 | 4 | WAS 2 1/8 SECTION A-A SECTION B-B SECTION C-C SECTION D-D VIEW OF GASKET OUTLINE SPARK GAP LOCUS 1/8 R LOCUS 3/8 R THESE DIMENSIONS ESTABLISH FLAT SURFACE FOR INITIAL POINTS IN CYLINDER HEAD DETAIL RADII CHANGED FROM 1/8 TO 5/32 R COMPLETE COMBUSTION CHAMBER VOLUME IS TO BE 113.6 MEASURED BEFORE DRILLING SPARK PLUG HOLES & WITH VALVES IN PLACE (INCLUDES GASKET) ALL DRAFT ANGLES 1° EXCEPT AS NOTED SECTION SHOWING POSITION OF SPARK PLUG ALSO ZONING DO NOT SCALE ALLOWABLE VARIATION OF PLUS OR MINUS ±.010 ON ALL FRACTIONAL FINISHED DIMENSIONS UNLESS OTHERWISE SPECIFIED. DESIGNED FOR: R.B. LAYOUT NO.: L-218.51 SCALE: FULL DRAWN BY: Tuohy CHECKED BY: KRAE GAUGE MATERIAL: WOOD NAME OF PART: COMBUSTION CHAMBER MODEL PART NO.: 0-56958 | ||
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).