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).
Technical drawing of a Slipper Flywheel (Front Half).
| Identifier | ExFiles\Box 79\3\ scan0136 | |
| Date | 21th March 1922 | |
| R.R. 890(SH)(SJ. 185. C.S. 21.) .450 .250 .050" CHAMFER AT 45° 8 COUNTERBORES THUS. ENLARGED VIEW OF DOVETAIL. SCALE 3/1 THIS FACE TO BE A FINE FINISH & TRULY SQUARE WITH BORE. 8 HOLES EQUALLY SPACED DRILL .213 DIA., TAP .250 - 28 T.P.I - R.H. PIECE No. MARKED HERE 2 HOLES DRILL .266 DIA TAP .312 DIA 22 T.P.I. R.H. OUTER RIM TO BE CONCENTRIC WITH BORE. FINISHED FLYWHEEL TO BE CORRECTLY BALANCED. .015 CHAMFER AT 45° WHITE METAL THESE FACES TO BE PARALLEL. & TRULY SQUARE WITH BORE. SECTION A.A TITLE: SLIPPER FLYWHEEL (FRONT HALF) DRAWN BY: A.A.K. CHECKED BY: FCLS DATE: 21-3-'22 USED ON: GOSHAWK SECTION: 5020 SCALE: 3/1 & 1/1 MACHINE ALL OVER OR WHERE MARKED THUS ||| NOT- HEAT TREAT BRINELL MATERIAL: STANTON S/M & WM/T SPECIFICATION: 201 B & 224 NO OFF: 1 DIMENSIONS: 6.000 DIA 5.400 DIA 5.300 DIA 5.200 DIA 6.500 DIA 8.150 DIA 7.300 DIA 6.900 CRS. .100 .150 40° .125 22 1/2 ° | ||