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).
Blueprint detailing an impact test for a steering gear component.
| Identifier | ExFiles\Box 28\2\ Scan049 | |
| Date | 25th May 1927 | |
| ALTERATION Location Date Initial B GUIDE FOR WEIGHT A 9" DROP ARM REDUCTION RATIO 15 1/2 TO 1 HELIX ANGLE 10°50' C 9 3/4" RAD. OF WHEEL A - DROP IN INCHES B - WEIGHT DROPPED lbs C RADIAL MOVEMENT AT RIM OF WHEEL Table: A | B (1) | B (2) | B (3) 6 | 1/16 | 3/32 | 1/8 12 | 5/64 | 1/4 | 9/32 18 | 9/32 | 9/32 | 13/32 24 | 9/32 | 15/32 | 1/2 30 | 13/64 | 13/32 | 23/32 36 | 13/32 | 1/2 | 7/8 48 | 13/32 | 9/16 | 1 1/8 All Dimensions not Limited to be ± .010 To be Machined where Marked ƒ Extra Fine Finish where Marked ƒƒ ADAMANT ENGINEERING CO. LTD LUTON. IMPACT TEST TYPE O MATERIAL No. Off per Set Machined all Over Ground where marked G Traced 25/5/27 Checked Appvd. Date P2737 | ||