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Old 09-30-2010 | 02:59 PM
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PROSTOCK68
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Default scale prop size on a u.s. 41 gas engine?
i have a 1/4 scale nosen aeronca champ with scale items on it, it has a u.s. 41 gas engine in it, questions are: whats the scale size prop for this plane.?

whats the largest prop a 41 can swing for scale flight?
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