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).
Checks on a 10CF coverplate assembly, focusing on deflection from spring load and centrifugal force.
| Identifier | ExFiles\Box 130\3\ scan0199 | |
| Date | 6th March 1941 | |
| Sales:P/AMS/EFB 24.4.41 Copy for March 6, 1941 CHECKS ON 10CF COVERPLATE ASSEMBLY WITH C-2096, 125-135# SPRINGS. "A" - Deflection of cover stamping due to spring load. Upward bulge of coverplate due to spring pressure checked by bolting cover only to flywheel and checking height with surface indicator and marking these spots. Built up complete and bolted back in flywheel with a flat D.M. in place and rechecking same spots. Change at lugs Change between lugs #1 position +.0085" +.009" #2 position +.005 +.005 #3 " +.013 +.011 "B" - Additional deflection due to centrifugal force - 2 Assemblies checked. Outward bulge of cover due to centrifugal force of levers checked by putting clutch on cushion deflection machine upside down and applying load to lever adjusting screws which were put in from underside of levers. Deflection over capscrew as follows Leverage. Levers. (Handwritten annotations above columns) C.P. #1 C.P. #2 Leverage Load on Levers Equiv. Load at P.P. Equiv. R.P.M. #1 #2 #3 #1 #2 #3 5.36:1 3# 17.2 16.1 500 0 0 0 0 0 0 5.82 11# 63. 64.0 1000 0 0 0 0 0 0 5.70 14# 80.0 1170 0 0 0 0 0 0 5.80 25# 145.0 1500 0 0 0 0 0 .0002 5.73 45# 258.0 2000 .0005 0 0 .0005 .0005 .0008 5.72 70.5# 403.0 2500 .001 .0005 .0005 .001 .001 .0012 5.75 101.0# 580.0 3000 .0015 .0007 .0007 .0012 .0015 .0018 5.72 138# 790.0 3500 .0015 .001 .001 .0018 .002 .0022 5.72 180# 1030.0 4000 .0017 .0012 .001 .002 .003 .003 96 "C" - Load to deflect cover .005" ran from 300 to 470# at bearing, which would be equivalent to load of 1700# to 2700# on cover. | ||