A New Bunk Bed, Rebunking a trailer
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A New Bunk Bed, Rebunking a trailer

  1. #1
    Senior Member holorinhal's Avatar
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    Default A New Bunk Bed, Rebunking a trailer

    So, the trailer that came with the blue Advantage, needs to be rebunked. Not just the wood replaced, but all the brackets need to be cut off and re adjusted.
    It was sugjested to cut them off flush and move them over and reweld, however the trailer once belonged to another boat with a totaly dfferent botom and all the brackets are at the wrong angles and spacing.
    I have purchased the 3/16" steel plate, cut them to width and have bent the shelf angle. the brackets are ready to go.
    What I need is to hear any tips and tricks for setting up the bunk brackets to the boat, at the right angles and spacings. The brackets are weld on with the exception of the the center brackets that have a slot and bolt for adjustment.
    I have the boat blocked up on the trailer , centerd and level, side to side and a little nose high attitude, with the trailer and have started cutting off the old brackets.
    How should the boat sit on the trailer? With the trailer level, Should it sit with a little nose high attitude? To Me ,the way a boat sits on its trailer is just as important as how it looks in the water.
    I have searched high and low but have not really found any info on the subject. It would be really cool to hear how a trailer company goes about it. Maybe River Dad will chime in.

    I'm not here for a long time, I'm just here for a good time!
    If your not on the edge.......your taking up too much room......Drive it like you stole it!

    73 KONA Restoration http://www.performanceboats.com//showthread.php?t=10678
    '81 Spectra 20 Facelift http://www.performanceboats.com/user...-facelift.html

    18' Advantage http://www.performanceboats.com/jet-...k-project.html

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  3. #2
    Senior Member bc18's Avatar
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    My boat sits a little nose high from the trailer. Trailer companies usually block up the boat on the trailer then build up to it. That way everything's at the right angle and height.

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    I built my whole trailer from scratch and I am happy with the results and ride. The boat is 5" higher at the front, I only done it that way because that is how I see most boats here.
    I slung my eliminator over the trailer and welded everything in place. When I lowered it down it was perfect.
    I did have a issue because I went full rollers and the boat did move back and forward so I slung it again and changed eight rollers for skids leaving two rollers up front. It works perfect and I wouldn't change a thing.
    My only advice is sling and lift the boat, built the trailer under it and it takes all the guess work out
    Last edited by aussiesmokinjoe; 11-15-2012 at 03:49 AM.

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  6. #4
    Senior Member sandeggo's Avatar
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    Hal,
    I fitted my 16' schiada onto a trailer that was for a 18' bahner bubble deck. My original trailer had single 2x4 bunks. the new trailer had 4 2x6 bunks. I modified it to use the single long 2x6 on each side. I cut the brackets, changed the angle, moved them in, and rewelded them. Used a floor jack on the intake.




    Later on I added a Vblock and a winch because I hate floater bars

    And this last pic is because I can't leave everyone thinking the boat stayed that haggard. It got a full rebuild right after.
    Last edited by sandeggo; 11-15-2012 at 05:32 AM.

  7. #5
    Senior Member holorinhal's Avatar
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    Quote Originally Posted by sandeggo View Post
    Hal,
    I fitted my 16' schiada onto a trailer that was for a 18' bahner bubble deck. My original trailer had single 2x4 bunks. the new trailer had 4 2x6 bunks. I modified it to use the single long 2x6 on each side. I cut the brackets, changed the angle, moved them in, and rewelded them. Used a floor jack on the intake.
    Kevin, When I cut the brackets off and moved them the two outer brackets were then too short. I guess the boat that was originally on the trailer had a shalower V to the bottom. I just baught some scrap plate and made all new brackets.

    I'm not here for a long time, I'm just here for a good time!
    If your not on the edge.......your taking up too much room......Drive it like you stole it!

    73 KONA Restoration http://www.performanceboats.com//showthread.php?t=10678
    '81 Spectra 20 Facelift http://www.performanceboats.com/user...-facelift.html

    18' Advantage http://www.performanceboats.com/jet-...k-project.html

  8. #6
    Senior Member sandeggo's Avatar
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    Take the guess work out of it and have the boat above the trailer is what I'm gettin at. Angles and measurements aren't needed. Just jack the boat up, put the new bracket on the inside of the trailer, hold the top up to the boat and scribe your line.

  9. #7
    Senior Member holorinhal's Avatar
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    Quote Originally Posted by sandeggo View Post
    Take the guess work out of it and have the boat above the trailer is what I'm gettin at. Angles and measurements aren't needed. Just jack the boat up, put the new bracket on the inside of the trailer, hold the top up to the boat and scribe your line.
    Oh Yes for sure. I have the boat blocked up on the trailer. it was just that the outer brackets were unable to be used becouse they were too short and by the time I cut them all loose and fit them to the boat properly, all of them were so far out of wack ,that it was just easier to fab up new brackets to work with.

    I'm not here for a long time, I'm just here for a good time!
    If your not on the edge.......your taking up too much room......Drive it like you stole it!

    73 KONA Restoration http://www.performanceboats.com//showthread.php?t=10678
    '81 Spectra 20 Facelift http://www.performanceboats.com/user...-facelift.html

    18' Advantage http://www.performanceboats.com/jet-...k-project.html

  10. #8
    Senior Member River Dad's Avatar
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    That's the way we always did it Hal. We would hang the boat and then lower it onto small blocks to get the spacing right. I tried to keep them fairly level but a little nose high looks good on a bubble deck. We bent pre drilled 3 inch brackets on the brake and left them long, than just used a 2x4 or 2x6 block on the bracket and cut them to fit. Tack it in place with boat over the trailer and all the guess work is removed. Measuring and angles and trying to duplicate the bottom is tough without hanging the hull....... Rd

  11. #9
    Senior Member River Dad's Avatar
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    Sounds like you are right on track...

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    I made all my mounts adjustable and I have some pictures I will post if your looking for ideas. The first roller is fixed but all the others are removable and adjustable. Sorry it's not the best quality but I hope it gives you some idea's.I was very lucky because I used a scaffold and built it around the boat to lift the whole boat inches above the trailer to measure and ran the trailer out to weld.
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    Senior Member hellnback's Avatar
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    Hey Aussie tell me about that pump.
    It may be OLD ,it may be Slow ... but at least it's MOBILE !!!

  14. #12
    Ain't Right Racin piston in the wind's Avatar
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    Quote Originally Posted by hellnback View Post
    Hey Aussie tell me about that pump.
    Look's Like a Hamilton ???

  15. #13
    Senior Member holorinhal's Avatar
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    Quote Originally Posted by River Dad View Post
    Sounds like you are right on track...
    Yeupp! gotter dunn. Here are a few pics.

    Here is what it looked like before.

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    Blocked the boat up on the trailer and cut off all the existing brackets.

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    I bought some 3/16" 10" x 10" plate from the scrap bin at the steel supply. I cut the plate into 5" wide pieces and then bent the shelfs.

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    I clamped the brackets to the trailer with the bunk wood fitted to the hull.

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    I then took the boat off the trailer.

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    I cut all the brackets to size, cleaned themup, taced them in place then welded them up solid.

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    Last edited by holorinhal; 11-16-2012 at 10:07 PM.

    I'm not here for a long time, I'm just here for a good time!
    If your not on the edge.......your taking up too much room......Drive it like you stole it!

    73 KONA Restoration http://www.performanceboats.com//showthread.php?t=10678
    '81 Spectra 20 Facelift http://www.performanceboats.com/user...-facelift.html

    18' Advantage http://www.performanceboats.com/jet-...k-project.html

  16. #14
    Senior Member holorinhal's Avatar
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    I will put the bunks on ,but I am going to wait to cover them, I want to try and get the trailer and blasted to repaint. I also need to replace the fenders, or repair the one fiberglass fender that is tore up.
    Last edited by holorinhal; 11-16-2012 at 10:20 PM.

    I'm not here for a long time, I'm just here for a good time!
    If your not on the edge.......your taking up too much room......Drive it like you stole it!

    73 KONA Restoration http://www.performanceboats.com//showthread.php?t=10678
    '81 Spectra 20 Facelift http://www.performanceboats.com/user...-facelift.html

    18' Advantage http://www.performanceboats.com/jet-...k-project.html

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