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Old 07-20-2012 | 05:08 AM
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karolh
 
Joined: May 2002
Posts: 6,852
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From: Mandeville, JAMAICA
Default RE: nitro planes yak 54 underpowerd???
The ST90 will fly it okay but that's about all it will do, just don't expect the model to have much aerobatic performance with that engine up front. I had a ST90 in a 68" span CG Extra and at 8.75 lbs it's flight performance was just so so.

Karol
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