Status list of design modifications for the Spectre Chassis.
| Identifier | ExFiles\Box 30\4\ Scan074 | |
| Date | 2nd November 1934 guessed | |
| (3) ITEM. DESIGN POSITION. SPECTRE(Codename for Phantom III) CHASSIS - CONTINUED:- Spring loaded valves in damper governor pump. Completed. Alternative front appearance. In hand. Modified single plate clutch. Completed. Reduced oil feed to valve gear and improved cylinder head oil drainage. In hand. Raised 3rd crossmember and silencer support. Completed. Filter for auto adjusted tappets, final scheme. In hand. Modified variable rating front suspension. In hand. Improved silencer and battery box ground clearance. In hand. Gearbox modifications:- to accommodate grinding wheel on 3rd motion shaft. Completed. Modification to exhaust manifolds. In hand. Gearbox:- modifications to selector lock housing and casing. Completed. Gearbox:- increased number of dowel bolts. Completed. Additional brake pull/springs. off Completed. Experimental steering layout - improved geometry with equal triangles.I.F.W.S. Completed. Increased ground clearance - silencer front end. In hand. | ||
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).