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 Tunnel hull with surface drive? 
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Post Tunnel hull with surface drive?
Have any of you guys tried running a Tunnel Hull boat with a surface drive? How does it perform? We have an 1860 Polar Kraft Mod V Tunnel Hull with a short shaft Yamaha 40hp. It will run in really shallow water, but it doesn't do well in stumps, mud, and trash.


Wed Jan 14, 2015 6:32 pm
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Post Re: Tunnel hull with surface drive?
From what ive read it doesn't run well. Use the search feature. Lots of info.

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Wed Jan 14, 2015 6:47 pm
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Post Re: Tunnel hull with surface drive?
If it worked well more people would have them.


Wed Jan 14, 2015 6:52 pm
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Post Re: Tunnel hull with surface drive?
It disturbs the water too much going to the prop.

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Wed Jan 14, 2015 6:58 pm
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Post Re: Tunnel hull with surface drive?
To get the belt housing out of the water stream, you have to have a short transom motor. Short transom motor on a tall transom boat means you lose the ability to dig. That's in addition to the crappy water it'll get with the tunnel.

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Wed Jan 14, 2015 7:55 pm
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Post Re: Tunnel hull with surface drive?
The belt housing is not in the water if the transom is the right height.


Wed Jan 14, 2015 8:00 pm
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Post Re: Tunnel hull with surface drive?
Thanks guys, it sounds like it will cavitate real bad.


Wed Jan 14, 2015 8:12 pm
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Thu Jan 15, 2015 12:53 am
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Post Re: Tunnel hull with surface drive?


Thu Jan 15, 2015 4:14 am
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Post Re: Tunnel hull with surface drive?
My buddy ran a hyper drive on a tunnel hull gator trax boat and it ran just fine before the boat got all hooked to hell.


Fri Jan 16, 2015 7:00 am
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