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adding aluminum skin under pontoon
I just purchased a 20' pontoon. It's my first boat and I took it out
about a week ago. I've got a 90 hp ETEC on it and 25" pontoons. It'll go right at 30 mph according to the speedometer on the boat, which is pretty satisfactory for me. However, I could feel water hitting the cross members under the deck and slowing us down. I opted not to get the skins applied on the boat when I ordered it, so I've been considering putting some underneath myself. What would be the proper way to do this? My idea is to buy thin aluminum sheet and rivet it underneath with aluminum rivets to avoid any galvanic reaction at the fasteners. The cross members already have slotted holes in them which would be nice to use to accept the rivets. One thing I am concerned about is squeaking from the movement of the aluminum sheet against the crossmembers. Is this a valid concern? Is there a technique or material I can use to avoid this? All opinions welcome. thanks, -Trent |
#2
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If I remember right the factory uses silicone between the ribs and the skin
to prevent squeaks. Then just rivit into place. Getting the drilled rivit holes in the skin to line up with the existing holes is going to be almost impossible. Just drill new ones. As for the speed - you will gain about 2 mph on top end. As for your speedo - probably about right. But - every pontoon I have had looses about 2 mph on top end after a few weeks of use. Something about the oxidation on the pontoons or something. And I always kept mine on a trailer so dirty pontoons was not the issue. -- Tony my boats and cars at http://t.thomas.home.mchsi.com - wrote in message oups.com... I just purchased a 20' pontoon. It's my first boat and I took it out about a week ago. I've got a 90 hp ETEC on it and 25" pontoons. It'll go right at 30 mph according to the speedometer on the boat, which is pretty satisfactory for me. However, I could feel water hitting the cross members under the deck and slowing us down. I opted not to get the skins applied on the boat when I ordered it, so I've been considering putting some underneath myself. What would be the proper way to do this? My idea is to buy thin aluminum sheet and rivet it underneath with aluminum rivets to avoid any galvanic reaction at the fasteners. The cross members already have slotted holes in them which would be nice to use to accept the rivets. One thing I am concerned about is squeaking from the movement of the aluminum sheet against the crossmembers. Is this a valid concern? Is there a technique or material I can use to avoid this? All opinions welcome. thanks, -Trent |
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