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).
Test report for Spectre frames, detailing results for spot welded seams under torque.
| Identifier | ExFiles\Box 94\4\ scan0012 | |
| Date | 3rd August 1934 | |
| To E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} 4694 327 Hs{Lord Ernest Hives - Chair}/WB.{Mr Brazier/Mr Bell}19/KW.3.8.34. SPECTRECodename for Phantom III FRAME TESTS. EX.13183. Spot Welded Seams - Average Pitch of Welds 1.500" Length under Test, 5 ft. 6 in. Specification. Average Thickness .108". Brinell 137. Torque lb. ft. Defl. Ins. at 20" Radius Angular Deflection Degrees. 0 - - 150 .033 .0945 300 .067 .1919 450 .101 .2895 600 .136 .390 750 .170 .487 900 .203 .582 Hs{Lord Ernest Hives - Chair}/W.Bell. | ||