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 revision for a Merlin II No.1 Unit, detailing new and replacement parts for the crankcase and crankshaft.
| Identifier | ExFiles\Box 169\4\ img145 | |
| Date | 1st February 1933 | |
| To Messrs. from RWC/VSC. RWC/TSC/13.7.2.33. MERLIN II. No.1 UNIT. Specification of the above Unit issued in RWC/VSC, 13.P.11.32. is revised as follows.- PASSED TO TEST 1.2.33. Crankcase & Bearings LOP.E.100678. The following New parts fitted bringing Unit up to latest specification, incorporating:- (1) LeC.3291 - Increased Capacity-Ribbed Lower Half. E.100F43 Crankcase (L.H.) (2) LeC.3350 - Improved Crankcase Breather. Crankcase drilled to suit. (3) LeC.3353 - Weir to raise Oil Level in Distributor Drive Housing, in connection with same. E.100123 Cross Shaft Bearing has the 4 Oil holes deleted. (4) LeC.3285 - Front Engine Suspension. E.100944 Engine Suppn.Arms. The following New replacement parts fitted:- 1 Set Main Bearings E.100F39/40/1/2 (Whitemetal) E.100244 Tappet Rod. E.100146 Front Cover. Crankshaft LOP.E.100740. Existing E.100643 Crankshaft 2.850 dia: Journals - 4.125 Stroke - V.C.M. fitted with Larger Balance Weights to Drawings Ls.PC5/6. -continued- | ||