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Aviation History
1918
1918 - 1086.PDF
SEPTEMBER 26, 1918. Mechanical tests shaft, the results of Mechanical restiI.were made on the crankcase and crank- which are given below :— Crankcase. Mark. Diam. T 0.253 • <- _ L 0.254 ...... •;" "-" :-"?• L ' : Position. End Journal .. '..Web LongCrank-pin, long. Web, trans. Max. Stress. Elongation, •/•• 11.65 11 28 Crankshaft. . : • Dia m Mar k 1 .254 2 254 3 -254 45 254 D 7 -254 S"-S as • r * S* 2 ' cf •OT"S" w-t-L .2 3. •*< Yiel d To n Max . Ton s p.c . E on R o f 59.0 63.1 14.3 56 61.6 64.1 15.1 54 63.6 67.1 15.1 55 61.4 65.3 7.2 10 I 1 t M 0"^ 3 17-21 .6 16.121 .7 12.12 •5 5-5 Metallurgical Analysis of Principal Parts. Cylinder head Cylinder barrel Cylinder water- jacket PistonGudgeon pin floating bush Gudgeon pin.. Connecting rod Inlet valve ..Exhaust valve Crankshaft .. Camshaft Camcore Carbon . % 0.49 0.25 0.28 °.I5°-53 O.IQ O.3I O.4O O.I7 Graphit e Carbon . 2-57 2.42 2-39 Combine d Carbon . O.9I O.83 O.65 Lead . Iron . Tin . Big-end bear- % < ing metal 3.51 Main journalbearing .. 0.92 Crankcase .. 0 1 • •- - :• • •' • •, ' ~-'-t • " 80.05 77-65 99 Silicon . 1.60 o-33 0.27 1.29 1-43 0.23 033 0.30 0.20 0.31 0.25 0.23 Manganese . 0.70 I.OI 0.63 0.83 0.76 0.48 0.31 0.48 o.?6 0.63 0.23 o.75 Sulphur . 0.131 0.028 0.032 O.III 0.146 0.028 0.027 0.032 0.019 0.030 0.022 0.036 Phosphorus . °-340.054 0.037 0.30 0.47 0.022 O.OIO 0.044 0.023 0.015 0.040 0.041 Copper . Zinc . Anti - mony . % % % 6-34 9-9O: 10.00 11.18 0.87 12.01 Alu- 0 minium(by Din".) - - 86.57 Nickel . j % 1.42 4.01 3.62 4.01 346 0.47 Chromium . % 0.49 o-5i1.16 0.83 0.68 Silicon . Manga - nese . Of Q/ A> A> 56 trace • • • General Analysis of Weights. Description of Part. Cylinders, bare - Pistons, complete with rings and gudgeon pin set screws Gudgeon pins Connecting rods and floating bushes Crankshaft, with oil rings Crankshaft extenser, nut and pin Inlet valves Exhaust valves Inlet and exhaust valve springs Inlet and exhaust valve collars, cotters and locking device Thrust, with ball races, propeller hub flange, and camshaft driving sprocket- Camshafts Overhead valverockers, complete 12 Overhead rocker bearings Valve tappets and guides Crankcase, top half Crankcase, bottom half Bearing caps Front bearing cap .. Crankcase holding-down bolts, clamps, nuts and washers .. Induction pipe, complete Propeller hub, bolts and nuts Inlet valve push rods Exhaust valve push rods Inlet and exhaust stiflening plates Oil pumps, drive and pipe .. Rear cover plate Front cover plate Water pump, complete Camshaft, oil and water pumps driving gears Wireless clutch Revolution counter gear Machine gun interrupter gear.. Petrol pump Magnetos Magneto wiring Oil pipes .. Self-starter gear Exhaust manifold Carburettors Miscellaneous Total weight of engine- pers e 0 6 6 6 6 1 1 12 12 24 c rage u lbs . < 32.75 12.30 1-75 8.93 99-90 4.00 o-43 0.47 0.28 sf-s bo g JJ 196.50 73.80 10.50 49.12 99.90 4.00 5-25 5-7°6.74 V :enta g tota l eight . fe 0 * 21.59 8.11 I.I5 5-39 10.98 0.44°-57~ 0.62 0.74 0.12 3.00 0.32 I 2 12 24 12 I I "6 I 14 1 1 6 6 2 I 1 1 I 1 1 I 1 I 2 I I 1 I 2 O - 17.68 IO.OO I.08 O.42 O.93 94-3O 41-32 2.685.56 2,40 9.09 21.OO O.48 O.49 2.OO 9,OO 6.06 4,00 8.50 I3-65 5.062.62 1.82 3-5O IO-75 14-75 14-00 'L6.oo 27.00 16.00 O O 17.68 20.00 12.99 10.50 11.25 94-30 4132 16.12 5-56 33-6o 9.09 21.00 2.90 2.97 4.00 9.00 6.06 4.00 8.50 1365 [5.062.62 1.82 3-50 21.50 4-75 4.00 6.00 27.00 3200 3-75 911.00 O; O O • ' •• .•-••' 1.94 2.20 1.42 1.15 1.23 10.36 4-541.77 0.61. 3-7O 1.00 2.30 0.32 0-33 0.44 0.980.66 0.44 0-93 150 o-550.28 0.20 0.38 2.36 0.52 0.440.66 .2.96 3-51 0.41 100.00 O O O ••••".«. Fig. 48.—The 300 h.p.Maybach engine, installed in the Rumpler C.4 biplane. O.O OOO 1086 0 0 G O O o o o o o o o o o
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