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).
Specification revisions for 'S.S.' Unit No. 13, detailing modifications to various components.
| Identifier | ExFiles\Box 169\1\ img012 | |
| Date | 22th February 1929 | |
| (2) RHC{R. H. Coverley - Production Engineer}12/MS22.2.29. "S.S." Unit No.13. Specification of above Unit issued in RHC{R. H. Coverley - Production Engineer}8/MS14.2.29. Revised as follows:- Crankcase & Bearings - L.O.P. E.78560. Crankcase End Cover E.77433 altered to give .030 end clearance to Crank Oil Thrower & Oil Groove added with 3 Drain Holes .125 dia: in bottom half of End Cover only. Oil Level Indicator - L.O.P. E.77669. Oil Level Indicator modified for correct calibration to Sketch supplied by AJL. 19.2.29. Water Connections - L.O.P. E.77665. Thermostat removed and standard Water Connections fitted. Flywheel & Clutch - L.O.P. G.76591. Special Hoffmann Bearings Nos.315 & 4224 modified to give .100 float in Inner Race to Ex.3775. 16.2.29. Gear Box & Actuating Gear - L.O.P. G.76764 - N.S.2699/700 (1) 2 Vent Holes .125 & .250 added to Change Speed Bracket. (2) Distance Washer G.77431 fitted to Clutch Oper: Shaft. 18.2.29. 1st. & 3rd. Motion Shaft - L.O.P. G.76638. Serrated type Coupling to N.S.2812 & G.L.312 fitted in place of Hardy Fabric Coupling. 18.2.29. Servo Drive - L.O.P. G.76740. Plug to retain Oil fitted to Servo Shaft G.76704. 18.2.29. RHC.{R. H. Coverley - Production Engineer} | ||