. Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional . Fig. 99—Top view of the engine showing the steam chest uncovered for a perfect rnnning engine and for the developmentof maximum power. Cranhcase.—File the crankcase flat so that it makesa perfect joint with the cylinder casting. This job canalso be performed on a lap grinder with success. Holes. Fig. 100—Complete set of patterns for the twin-cylinder engine are drilled and tapped and then both members arescrewed together. The crankshaft bearings are
. Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional . Fig. 99—Top view of the engine showing the steam chest uncovered for a perfect rnnning engine and for the developmentof maximum power. Cranhcase.—File the crankcase flat so that it makesa perfect joint with the cylinder casting. This job canalso be performed on a lap grinder with success. Holes. Fig. 100—Complete set of patterns for the twin-cylinder engine are drilled and tapped and then both members arescrewed together. The crankshaft bearings are bestdrilled by using the back center punch marks at eachend, drilling first one side and then the other. A No. 1drill should be used and then the hole carefully reamedout with a standard 14-inch reamer. A Model Twin-Cylinder Engine 143 Valve Chest.—This casting is filed or gronnd flat tomake a perfect joint with the top of the cylinder holes are drilled and tapped and the endslotted for the bell crank. The bell crank is the mediumbetween the eccentric and the valve stem. The insideof the steam chest can be milled out if a milling machineis available. Otherwise, one must resort to the old re-liable file and scraper. The valve stem passes throughone end of the chest which has been drilled and fitted
Size: 2240px × 1116px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidmodelmakingi, bookyear1919
