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).
Polar plot diagram of the load on intermediate journals for a flat 12-cylinder engine at 3500 RPM.
Identifier | ExFiles\Box 115\2\ scan0512 | |
Date | 16th November 1939 guessed | |
FLAT 12 CYL. ENGINE - LOAD ON INTERMEDIATE JOURNALS B.C.E.F. @ 3500 R.P.M JOURNAL B - O JOURNAL C - [red dot symbol] JOURNAL E - O JOURNAL F - [red dot symbol] GIVES MAGNITUDE & DIRECTION OF LOAD WHEN N°1. PISTON IS ON FIRING T.D.C. N°1 N°6 N°1 N°6 BORE 3½ STROKE 4½ CONN ROD / CRANK 4.08 WT. OF PISTON, RINGS, 600 AND PW 1.61 lbs (red text: 120) CONN ROD WEIGHTS - FORKED | PLAIN 570 (red text: 90) LITTLE END 0.8 | 0.75 BIG END 2.0 | 1.27 BEARING DIMENSIONS 2.75" dia x 1.25 FIRING ORDER A.{Mr Adams} 1 4 2 6 3 5 B. 2 6 3 5 4 1. AXIS: LBS, scale from 4000 to -4000 PLOT DATA (black text / red text): 0/240, 30/270, 60/300, 80/320, 90/330, 120/360, 150/390, 180/420, 210/450, 250/480, 260/500, 270/510, 300/540, 330/570, 360/600, 390/630, 420/660, 450/690, 480/0, 510/30, 540/60, 630/150, 660/180, 690/210 SHEET 4. | ||