JON BOAT TUNNEL DESIGN/ EXTENSION

2072 TUNNEL MODIFICATIOIN

*****This section is for Full Boat Projects Only*****
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czuniga
Posts: 103
Joined: 30 Jan 2012, 14:29
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JON BOAT TUNNEL DESIGN/ EXTENSION

Post by czuniga »

HELLO TO ALL

RECENTLY HAD A CUSTOM TUNNEL WELDED ON A 2072 JON BOAT.
HOWEVER TUNNEL HAS LEFT FLUSH WITH REAR OF BOAT SEE PICTURES. I
HAVE BEEN HAVING SOME OVERSPLASH AT TAKE OFF AND MY PROP CAVITATES FROM
TIME TO TIME. IM THINKING OF A FEW MODS TO MY VESSEL AND IM SEEKIG ANY IDEAS FROM
ANYONE WITH A SIMILAR SETUP. I HAVE SEEM ON OTHER VESSELS WHERE TUNNEL EXTENDS A FEW INCHES OUT THE BACK.

ONE OF MY DEAS IS TO WELD A PLATE ACROSS THE TOP TUNNEL . SPONSOON TO SPONSOON HOWEVER SHOULD I WELD THIS AND AT ANGLE OF SHOULD I WELD AT A 90 DEGREE SEE PIC ( OPTION A OR B

OPTION 2 IS TO JUST ESTENT THE ENTIRE TUNNEL A FEW INCHES ABOUT AROUNT THE TUNNEL,

I APOLIZGED FOT THE CONFUSION ANY HELP WOUL BE APPRECIATED.

THAKS
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jtf
Posts: 249
Joined: 12 Jul 2017, 11:00
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Location: Northwest NC

JON BOAT TUNNEL DESIGN/ EXTENSION

Post by jtf »

Have a couple pics, here one on my 1648.
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turbotodd
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JON BOAT TUNNEL DESIGN/ EXTENSION

Post by turbotodd »

tunnel extension works pretty good on jet drives; not so much on prop drives. You'll really want to play with it before adding an extension to your tunnel if you're using a prop. Tunnel/prop never impressed me; at least not like a tunnel/jet

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czuniga
Posts: 103
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JON BOAT TUNNEL DESIGN/ EXTENSION

Post by czuniga »

MOST TUNNELS I HAVE LOOKED AT ONLY EXTEND A FEW INCHES OUT THE BACK. IM THINKING ABOUT COMING OUT ABOUT 5 O 6 INCHES DUE TO THE SIZE OF THE BOAT.
THANKS FOR THE INFO

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czuniga
Posts: 103
Joined: 30 Jan 2012, 14:29
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JON BOAT TUNNEL DESIGN/ EXTENSION

Post by czuniga »

will let you guys know how it turns out
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