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Old May 18, 2010, 01:10 AM
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Joined May 2010
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os 46AX compare with OS 55AX engine

Hi Somebody
i did bought a new os 46ax engine for my 40-50level plane. i like speed fly.
but all the friends here said i am stupid, why not but OS55 ax engine .
my opinion is 55ax may be will over temperature(too hot) and the stroke is longer than 46ax, so i think 46ax is much better for speed.
not i am very confuse, which one is better for speed fly, my fight is always 40-50lever. it means 2200-2600g weight.
thank you for answer
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Old May 30, 2010, 05:35 PM
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La Quinta, CA
Joined Mar 2010
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I have a 46AX in a GP Escapade and its plenty fast.
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Old May 30, 2010, 06:32 PM
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United States, CO, Aurora
Joined Dec 2007
4,137 Posts
Get either one and put a tuned pipe on it. That will help with the top end.
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Old May 31, 2010, 06:14 PM
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Canada, MB, Winnipeg
Joined Apr 2008
872 Posts
I would not worry too much, I have both and with the same props mine run within 200 rpm of each other.
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