He Builds Half-Scale Models Of Old 1 1/2 hp New Holland "Hit And Miss" Engines

He Builds Half-Scale Models Of Old 1 1/2 hp New Holland "Hit And Miss" Engines ENGINES Engines 22-3-36 I use commercially available casting kits to build half-scale models of old 1 1/2 hp New Holland "hit and miss" engines. The original New Holland engine was patented on April 7, 1903 and was fueled with gasoline. The spark plugs in those days were called "ignitors". They were mechanical points inside the cylinder that moved. A battery and coil provided energy for the spark. This style of engine was built from the 1880's up until World War II. My models are modified to run on propane and have a 1 7/8-in. bore and 2 3/4-in. stroke. The 12-in. flywheel is used to create momentum so that the engine will run smoothly. A small belt pulley (not shown) drives a flat belt that can be used to power a pump jack, feed grinder, or other implement. The "hit and miss" sound is created by the governor, which holds open the exhaust valve when the engine is up to speed. Without a load, the engine will fire just often enough to keep the flywheel at the proper rpm's. With a load, the engine will fire every other revolution, just like a typical 4-cycle engine. "Hit and miss" engines con-serve fuel when not under load. I purchased the casting kits from 7 Mt. Machine/Model Shop, RD 1, Box 408, Sand Mt. Road, Spring Mills, Penn. 16875 (ph 814 364-1101). (Mike Moyers, 37301 28th Ave. So. no. 31, Federal Way, Wash. 98003 ph 253 838-0282)

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