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).
Log detailing the results of stress and endurance tests on various automotive components like radiator brackets, rear axles, and radiators.
| Identifier | ExFiles\Box 119\2\ scan0065 | |
| Date | 12th November 1910 | |
| E.{Mr Elliott - Chief Engineer} 1297. Radiator Suspension Bracket. milled from solid instead of pressed steel. 12 hrs. without breaking on 2" bumps @ 105 revs. p.m. - Frame gave way @ this point (it was taken from scrap) Thinks it quite a safe result to work upon. RC{R. Childs} 12010. Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}/12.11.10. Rear Axle fitted with 880x120 Dunlop Twin Tyres & Wheels. RC{R. Childs} 1411. 9 hrs. 3 mins. in a series of short runs, off side axle tube broke @ shoulder. It is .275" thick 1/16" radius in corner. RC{R. Childs} 1411. Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} 13/2/11. g 2760. Bumping Test of Rear Axle Tube. g 2760 (near side) RC{R. Childs} 118K. 7 hrs. 11 mins. broke after running over alternate bumps @ 105 r.p.m. Breakage occured @ shoulder where inner wheel bearing fits. It is .275" thick & rad. in corner is nil @ this point. RC{R. Childs} 118K Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} 10/3/15. do (off side). 9 hrs. 20 mins. broke (reported on previously). do. do. g 118243. Rear Axle Tubes. (improved type, tapering off to the shoulder). g 4822 4 hrs & 50 mins. g 4823 13 hrs. 16 mins. Still undamaged. vast improvement on g 2760 (see above). RC{R. Childs} 118K. Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}/H/26.3.15. Marston round tube honeycomb radiator 1/8" thick being 20 lbs. lighter than the bonded Orme Evans Eq. tube (6ins thick). 20 hrs. over 2" alternate bumps @ 100 revs per min. without leakage occurring. RC{R. Childs} 118. Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}/8/4/15. Orme Evans 20" x 5" square tube honeycomb bonded Radiator with English drawn tubes. 30 hrs. After 18 hrs. 10 mins. 2 small weeps occurred on front face. @ 22". 30. 4 more appeared, (6 in all). 2" alternate bumps all being on front face & not actually inside the tubes - appear to be due to soldering & not defects. 106 revs per min. test run for 30 hrs and no more appeared. RC{R. Childs} 145K Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer} H/L/3.4.15. | ||