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).
List of required modifications and repairs for vehicle model 25-EX.
| Identifier | ExFiles\Box 19\4\ Scan155 | |
| Date | 22th July 1930 | |
| To RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/AJL. x777 Hs{Lord Ernest Hives - Chair}/AJL.1/MJ.22.7.30. WORK REQUIRED ON 25-EX. ENGINE UNIT. - Fit Diabolo rubber engine feet. The engine is unaccountably rough; check balance of flywheel, piston weights etc., bring spring drive and slipper wheel up to 24-EX. condition i.e. windows in spring plate etc. (16 springs E.80241 23 lbs. slipping load) Quieten oil pump gears (v.{VIENNA} bad). Quieten timing gears (not up to production standard) Fit set of valve springs E.70448. Oil leak from Auto-Klean gland (New design 'BY') Fit British Goodrich Fan belt. CLUTCH. - Check up driven plate for parallelism. Fit modified pressure plate .250" decreased inside diameter and .050" thicker at point of contact of springs. GEAR BOX. - Quieten side shaft; rough gears and noisy ball race. Quieten third gear, not up to standard. Investigate rattle from gear change lever. (reverse mechanism?) SHOCK DAMPERS.- Fit the new weaker springs in rear shock damper connecting links. EXHAUST SYSTEM. - Scrap aluminium system and fit up standard system but without cut-out. RADIATOR. - Carry out modifications to top tank as found necessary by tests now in progress. BRAKES. - Fit latest scheme (BY) for preventing the toggle, adjustment being let out so far that all lining is worn away. PETROL TANK FILLER.- Do away with petrol proof rubber in filler cap and substitute leather washer. | ||