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).
Specifications for engine components of models B-3 and B-4, including post-endurance examination results.
| Identifier | ExFiles\Box 155\2\ scan0130 | |
| Date | 30th August 1937 | |
| -2- B-3 (to be fitted in B-56-BW). Standard crankcase. Main bearing in M.C. as production) Big end bearing in AG.7.as production R.R. 36 shims. Crankshaft as production c - .2187 holes in journals and 2 - .125 in the crankpins. Aerolite M.14 pistons. Midland cylinder produced block. Det. cylinder head and telco governor. Nos. 2, 3 and 6 exhaust valves std. EB.2970 KB.963. Nos. 1, 4 and 5 exhaust valves in Silichrome ACR. as supplied by Banks from America. These are no stellited and to EB.2970. No. 1 - 4 American RB.{R. Bowen}175 springs. No. 5 - 8 R.R. cooled EB.3236 springs. No.9 -12 Tempered spring Hm.{Capt. W. Hallam - Head Repairs}.60. Standard large capacity pump. B-4. Returned for examination after endurance. Standard crankcase. Main bearings steel shells with magnolia metal surface. Standard AG.7 big ends. Crankshaft with single hole big end feed. Aerolite 019 pistons with L section 2nd. ring. Standard cylinder head but incorporating exhaust valves coolant jets lcS.5004. | ||