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).
Modifications to dashboard fittings and rear road springs, including spring specifications and test failure analysis.
| Identifier | ExFiles\Box 108\1\ scan0170 | |
| Date | 6th September 1937 | |
| - 7 - HPS.{Horace Percy Smith - Experimental Factory Mgr}1/VS.{J. Vickers}6.9.37 Dashboard and Fittings. Complete to LOP.FW.1194, incorporating modified Rest Angles and Bonnet Strips in "Kansas Snubber" in accordance with LeC.5464. The Bonnet Top and Side Plates are grooved from .008 to .013 deep. This grooving is definitely excessive after a relatively small mileage, and we suggest that standard fabric be used on reassembly. Rear Road Springs. Complete to LOP.FW.764, incorporating the following :- Revised Rear Dumb Irons and Rear Shackles to LeC.5442. Lubrication to Front Anchorage to LeC.5353, N.S.4906. Sleeve for Rubber Bushes - Front Anchorage to LeC.5617. Rear Shock Damper and Roll Rod Connecting Link in accordance with LeC.5607. The serrations on the Spring Pads were deleted in favour of pegging and welding per Ex.27955/6/7. Details of Springs produced by Messrs. Woodhead. O.S. N.S. Drawing No. FW.754. FW.754. Piece No. FW.757. FW.757. Lub. No. FW.754. FW.754. Type. 1100 lbs. 1100 lbs. Loaded lbs. 1114 lbs. 1100 lbs. sh Loaded Length. 55,15/16". 56". Initial Camber after test. 6,312". 6.312". The scheme of pegged and welded Roll-Rod Levers failed after 4,500 miles, and is to be superseded by an arrangement S.C.D.12, using Brackets Ex.S.1, which obviates welding and serrations. continued. | ||