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3 Blade prop for a OS Max 61 Engine

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3 Blade prop for a OS Max 61 Engine

Old 12-08-2020, 08:15 PM
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GhostriderBravo's Avatar
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Question 3 Blade prop for a OS Max 61 Engine

First thanks for allowing me to join. My question is what size 3 bladed prop can be used on my OS Max 61 engine. I know a 11 x 7 or a 12 x 6 prop is the typical prop for this size engine. This engine is on my T28 Trojan which has a 60" wingspan and the regular T28 has a 3 bladed prop on the Air Force version of this plane.
Old 12-09-2020, 03:10 PM
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Rule of thumb an oldtimer told me, Subtract 1" of length, add 1" of pitch. I can't base this on my own trial an effort.


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