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).
Merlin engine appendix detailing the parts list and weights for flame traps and side water rails.
| Identifier | ExFiles\Box 132\2\ scan0095 | |
| Date | 14th March 1940 | |
| R.R. 1011/1 (2.5) (17267 14-3-40) B.P. 49936 MERLIN APPENDIX - Section Flame traps & side water rails. Ref. No. No. Off. Part No. Weight lbs. ozs. Flame Trap 1 4 D.12137/1 10 0 ½ Coolant Rail-Inlet R.H. 2 1 D.12256 } 4 13¼ Plug - coolant rail. 6 D.12301 Coolant Rail - Inlet L.H. 3 1 D.12255 } 4 15½ Plug - coolant rail. 6 D.12301 Connection - coolant rail 4 2 D.12257 } Gland housing - connection 2 D.12276 } Connecting tube - connection 2 D.12277 } Gland 4 D.12278 } Joint ring gland cyl.inlet 2 D.2346 } Set-screw - Gland housing 6 KC.182 } 1 10 Plain washer gland housing 6 K.4404 } Spring washer gland housing 6 K.4506 } Joint - inlet water conn. 2 D.12300 } Nut - pump to cylinder pipe. 2 D.9460 } Stud - inter water rail 5 24 D.12293 ) - 10¾ Stud - long water rail 6 20 D.12292 ) - 9½ Stud - short water rail 7 4 D.12294 ) - 1½ -------------------------- 22 13 Increase weight of induction pipes to take) 2 1 2 flame traps D.12523 & 4. -------------------------- 23 15 When coolant rails are fitted, blanking plates become redundant. The weight of these and the shorter studs should therefore be subtracted from the total weight of coolant rails cons and studs. Plate - blanking 8 12 D.7932 2 0½ Stud - blanking plate 9 48 D.8006 - 10¾ -------------------------- Total weight of blanking plates and studs) 2 11¼ ========================== Total weight coolant rails etc., 23 15 Total weight blanking plates and studs 2 11¼ ========================== 21 3¾ ========================== | ||