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Old 04-17-2014, 08:56 AM
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cloudancer03
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Default sig liberty sport with os 91.

I just rebuilt one and with an os 91 surpass I am wondering if 8 pounds flying weight plus the gas at 10 ounces means its too heavy to at a reasonable speed.0
Old 04-17-2014, 03:17 PM
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tacx
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The 91 will be fine. I have three, of these engines and one is on a 9 lb. sport plane.
Old 04-18-2014, 05:24 AM
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cloudancer03
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Thank you.i tend to hit the end of the world button if I think it doesnt feel right.at my age I should know better.and my best flying bud said stop we will fly it. I had a sig spacewalker several years back and it weighed almost 13 pounds and I was convinced it would barely fly.wrong then likely wrong now lol. Thanks for for encouragement.
Old 04-18-2014, 06:21 AM
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I have a OS 91 Surpass on a Sig Hog Bipe that is 9 lbs all-up-weight and it flies great. here are some pics.
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Old 04-18-2014, 06:23 AM
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Here is your plane flying with a Saito 91.

http://www.youtube.com/watch?v=6nydoDkbPlM
Old 04-18-2014, 08:31 AM
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I have one of these with an OS .70FS on it. I haven't flown it yet so I don't know if that is enough engine for it. I thing the Liberty Sport is one of the prettier bipes I have ever seen. Only the Super Skybolt my be as attractive, IMO.
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Old 04-18-2014, 05:13 PM
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cloudancer03
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I watched that video numerous times.and I am considering either the hog bipe or the goregous skybolt.

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