Inverted Y.S. Engine Starting Technique - RCCanada - Canada Radio Controlled Hobby Forum
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Old 06-26-2005, 07:53 PM   #1
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I am: Eduardo Galiano
Join Date: Sep 2004
Location: Sudbury, ON

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Inverted Y.S. Engine Starting Technique

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Greetings All: Yesterday I maidened my Vision with a two stroke piped Y.S. 61, and the performance of the engine/airframe combination is very satisfactory. I was doing most maneuvres (loops, Cuban 8's, 4 point rolls, stall turns, vertical 8's, etc) with no more than 1/3 power, so the engine pulls the airframe with more than adequate authority. My problem is this: the engine is mounted inverted and for the first start of the day, the only way to get the starter to turn the engine over is by rotating the aircraft upside down so the engine is right side up, then start it. The reson for this I suppose has to do with fuel being collected in the upper cylinder and preventing the prop from turning over. The problem dissapears when the engine is started upright with the plane inverted. Question: Does anyone know of a less cumbersome way of actually starting the engine upside down since turning the plane around is not a fun thing to do. I must underscore the fact that this problem only occurs for the first start of the day. Any help would be most welcome.

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