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 specifications and modifications for various chassis and engine components.
| Identifier | ExFiles\Box 83\1\ scan0119 | |
| Date | 25th May 1936 | |
| -2- Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}3/KW.25.5.36. (8) Rear springs FB.2171. (9) Improved front axle control if this can be got through in time; otherwise standard. (10) Thin plate battery. ENGINE. New unit, B-22, to standard production specification except for - (1) Hall's solid metal main bearings with the groove continued right round on the intermediate bearings. (2) Rear main bearing to the modification Rm.{William Robotham - Chief Engineer}67. (3) Large inertia damper to LeC.4629 modified by Rm.{William Robotham - Chief Engineer}131 and including cotton duck washers to LeC.4946. (4) Increased capacity oil pump and relief valve as ordered in the memo. Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}5/JH.11.5.36. (5) Cylinder bores radiused at the base of the barrels to prevent piston scoring (Rm.{William Robotham - Chief Engineer}111). (6) External oil filter to LeC.4692 with gauze element in place of the Tecalemit element as Ph.III. (7) Turned rings and Aerolite pistons to be supplied by Hs{Lord Ernest Hives - Chair}/Mths.{Reg Matthews} (8) Deturbulated cylinder head as carried out on 25/30 to LeC.5002. C/R.{Sir Henry Royce} to be restored to standard. (9) Exhaust valves with head shape as proved on B-3, Rs.{Sir Henry Royce's Secretary}276. We are asking the Design for this type of valve to be issued - 3 in KE-965 stellited, 3 in Silchrome stellited. (10) Rm.{William Robotham - Chief Engineer}53 low stress valve springs. (11) Front 8 water holes blanked up in the cylinder block. This is already recommended for production - LeC.5117. (12) Crankshaft with Packard type weights - LeC.5139. (13) Delco Remy distributor as at present fitted to B-23-AE. (14) Clutch fitted with No.6 material and stronger clutch springs. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||