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Old 08-31-2009, 11:07 AM   #1 (permalink)
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Boat Trailer to Utility Trailer

Anyone on here convert a boat trailer to a utility trailer?

I bought a single axle boat trailer this weekend for $75 mainly for the title, but then I got to thinking about converting it into a smaller utility trailer to haul a couple fourwheelers and for other chores.

I think I will have to widen it and also move the axle a bit forward. Boat trailers seem to have the axle farther back than a conventional evenly loaded trailer.

(I am picking up the trailer tomorrow evening so I haven't been able to check it out real close yet.)
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[QUOTE=87manche;10827893]just color it in with a sharpie.
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Old 08-31-2009, 11:27 AM   #2 (permalink)
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Old 08-31-2009, 11:55 AM   #3 (permalink)
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I converted one for a buddy of mine.

I welded up a 2'x4'x8' box and welded it to the frame. I don't know what he hauls with it but it all passed inspection at the DMV.
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Old 08-31-2009, 04:44 PM   #4 (permalink)
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Just make the box longer and hang off the back to balence right. If you make it all bolt on, you can take it off and put a boat back on it.
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Old 09-01-2009, 02:33 AM   #5 (permalink)
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I bought one that my buddy built out of a boat trailer. He didn't move the axle. The deck is 6'x10'. I can put a 4'x8' sheet of plywood in between the wheels. I put 1 quad in at the front side ways & the other straight on.
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Old 09-01-2009, 08:10 AM   #6 (permalink)
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Quote:
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I bought one that my buddy built out of a boat trailer. He didn't move the axle. The deck is 6'x10'. I can put a 4'x8' sheet of plywood in between the wheels. I put 1 quad in at the front side ways & the other straight on.
Any pics?
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[B][I]"132 and Bush I've got him at gun point, OK gun point, 132 and bush, cover is code 3"[/I][/B]

[QUOTE=87manche;10827893]just color it in with a sharpie.
[/QUOTE]
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Old 09-01-2009, 08:15 AM   #7 (permalink)
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Old 09-01-2009, 09:10 AM   #8 (permalink)
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I took a 30' triple axle boat trailer and made it into a double axle car hauler. The main frame rails are 3x5" and the outriggers are 2x4. I left the center open but am currently rebuilding it to a complete flat deck. The outside width is 101". Total weight without tongue box and ramps is 2200#. GVW is 16000# (two 7000# axles and 15% tongue weight with load levelers)
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Old 09-01-2009, 10:40 AM   #9 (permalink)
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I converted one a couple of years ago and it works great. I just beefed it up a bunch with square steel tubing and welded sheet steel to the top.

Having the axle way to the rear makes it pull really nice and it definitely makes it a lot easier to back up than a typical small utility trailer.

I'd post up a couple of pics but I don't have a star on this forum. Email me if you want and I can send them to you if you are looking for ideas.
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Old 09-01-2009, 11:44 AM   #10 (permalink)
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We towed our old suzuki lt125 around behind farm equipment with a hitch we welded on front so we could ride the fourwheeler back to the other farm when moving equipment. Just pick the front end up and slide the hitch on. Well, we got a new 425 magnum polaris, and it was too heavy to do that. I took an old boat trailer, welded a few extra crossmembers in it, and topped it with expanded metal, worked great.

Hauler four-wheeler there, unload fourwheeler, hook trailer to fourwheeler, head back.
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Old 09-01-2009, 12:16 PM   #11 (permalink)
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yea i did one, the location of the axel was adjustable. There were 4 bolts and several holes were already drilled from the factory..
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Old 09-01-2009, 12:25 PM   #12 (permalink)
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Boat trailers are balanced in the neighborhood of 80% of length in front of axle. This is so with the weight of the outboard at the rear, the extra length in front of the axle ensures enough tounge weight. Not enough tounge weight = fishtailing trailer. Too much tounge weight = trailer that will want to push under the tow vehicle and unload the rear suspension (huh, that equals wreck).

IMO - most uses of the trailer would result in a heavy tounge weight - no biggy if the tow vehicle is heavy. This also translates to a biatch of a time hitching. Look at your hitch/bumper - most stock ones limit tongue weight to about 500-750#. A boat trailer loaded as a hauler could easily push you over that limit.

If it were me, I'd move the axle forward to around 68% for a general purpose trailer.
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Old 09-01-2009, 01:14 PM   #13 (permalink)
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How big is this boat trailer? If it's for an 18+ foot boat no problem. Smaller trailers than that tend to be built pretty light because...well....boats are light. I would suggest reinforcing the tongue a little. When I see those things going down the road the tongue is generally flopping more than Bob Dole's schlong.
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Old 09-01-2009, 01:29 PM   #14 (permalink)
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I made the one I have now out of a 16 foot boat trailer. I just built the box on then cut off some of the tongue and put on a new hitch. I used aluminum diamond plate for the deck and put on Galvanized "C" channel for the sides.
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Old 09-01-2009, 04:35 PM   #15 (permalink)
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I made the one I have now out of a 16 foot boat trailer. I just built the box on then cut off some of the tongue and put on a new hitch. I used aluminum diamond plate for the deck and put on Galvanized "C" channel for the sides.
Cool. You built the rectangular box then sat it on top of the boat trailer? You mounted the spring hangers to the new frame or old boat trailer?

The trailer I bought is 14', but is super narrow (41"). Looking like I will have to buy a new axle.
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[B][I]"132 and Bush I've got him at gun point, OK gun point, 132 and bush, cover is code 3"[/I][/B]

[QUOTE=87manche;10827893]just color it in with a sharpie.
[/QUOTE]
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Old 09-01-2009, 06:48 PM   #16 (permalink)
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I have one that my MIL gave me to haul off. I plan to shorten the tongue and cut out the center bows and either hack em up and staighten out or replace em and deck it.

I have a 16' tandem axle utility so I plan to cut this one down around 10' or so.
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Old 09-02-2009, 12:25 AM   #17 (permalink)
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Any pics?
I don't have any pics of my trailer. The tounge on my has been beefed up. I'll have to measure but I believe that my trailer is a 14'.
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