Warped a " DIY Warn style hitch mount" for my Christmas Winch
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  1. #1
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    Jan 2017
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    Warped a " DIY Warn style hitch mount" for my Christmas Winch

    I usually have been building frames with most of my projects. I don't do a lot with just flat plate and this is where my mistakes came in. I don't have a welding table and forgot I needed to tack it down to help keep it from warping.

    Let me know what you think. Maybe weld strips on the other side to warp it back and then grind them down? Heat the back on each side of the hitch bar with a torch and bend with a sledge hammer to get a flatter mounting surface? Heat the other side then cool with water then once flat heat again and let it cool slowly?

    Here is a picture looking from the backside and upside down, to see the curve the most. The hitch bar is on top and faces away from you. Also, I can't figure out how to get Google Photos to show up other than just as a link, but it auto uploads from my phone so here goes.
    https://photos.google.com/photo/AF1Q...z2rm4zySrKzLbl


    More detail if you are interested or have questions:
    I was following Warn's style of the hitch mount even though originally I wanted to make a frame to set the plate on. The issue I saw was that the size of it would need to be 2" wider in all directions than the winch mounting area if I didn't want the mounting bolts to go through the tubing. I thought that would be a bad idea to prevent water from pooling inside the tubing and rusting onto my driveway. This lead me to follow Warn's style. After I was halfway done I thought I could have added some 3/8" 2"x2" angle iron along the edge and would still have some support without the hollow water trap, but that was after I got this far and warped it. So as I mentioned then came the warping and I pulled a Homer and realized I should have tacked it down well to something.I will be sand blasting and then coating it in a KBS kit to prevent rust then a top coat for UV protection. I also plan to take flat bar from the top of the hitch bar down to the plate - at the rear and sides to make a "mound" to help prevent lateral twisting. I'm just worried the only support is a bar welded to a plate. I like the angle Iron idea also on the bottom edge if I can get it flat.

    Thanks in advance for all your help. I'm off tomorrow and look forward to figuring this thing out.

    please pardon the Grammar, it's late and and I'm pretty tired after researching how to fix this the best way
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    Last edited by stewbuntu; 01-11-2017 at 02:13 AM.

  2. #2
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    This probably isn't the best advice, but it's just an idea. Put it in a vice and use a big pipe wrench.
    Last edited by Keith Merrell; 01-11-2017 at 03:06 AM. Reason: mispelled
    Hobart Handler 190
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  3. #3
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    Dec 2015
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    482

    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    tack a couple of lugs on the ends on the outside of the warp, run a chain between them with a jack under the chain at the point it is most bent. Wind/pump up the jack and it should pull straight.

  4. #4
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Something like that I would shim under the tube, an use two bridge clamps to bow the plate back straight.
    Or you could use heat and water.
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    Don’t pay any attention to me
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  5. #5
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Tacking it down (or clamping it down) would not stop it from warping, it will still spring after the tacks are cut.

    Pre-stressing it the opposite direction would allow it to spring straight though.
    Basically you just clamp it down with a little pre-bend, then weld. When released it will pull straight.
    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

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  6. #6
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by CEP View Post
    Something like that I would shim under the tube, an use two bridge clamps to bow the plate back straight.
    Or you could use heat and water.
    +1
    These both work good.

    Heat and water are voodoo black magic though - not everyone can do it

    Clamps though, everyone can do that - "brute force and ignorance" - my favorite
    Last edited by MinnesotaDave; 01-11-2017 at 08:23 AM.
    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Airco 300 - Syncro 350
    Invertec v250-s
    Thermal Arc 161 and 300
    MM210
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    Tried being normal once, didn't take....I think it was a Tuesday.

  7. #7
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by MinnesotaDave View Post
    Heat and water are voodoo black magic though - not everyone can do it
    Nonsense! I’m just a hobbyist, and I can do it.
    Don’t pay any attention to me
    I’m just a hobbyist!

    Carl

    Dynasty 300
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  8. #8
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Plate wraps easy when welding. That wouldn't have been so bad if you weld only parallel with the plate the long way. You may still get some distortion.
    You should be able to pull that cold some clamps and shimmed up as the big guys stated. Here's where a chunk of '' I '' beam is handy.

  9. #9
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by MinnesotaDave View Post
    +1


    "brute force and ignorance" - my favorite
    Well, I'm half way there
    (And it ain't my strength…)

    DB

  10. #10
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by CEP View Post
    Nonsense! I’m just a hobbyist, and I can do it.
    Takes me more than one try pretty often. Therefore heat straightening = voodoo black magic

    Sure does work good though when I get it right.

    I was making about 16 square and rectangle double thickness patterns for a woodworker (his idea).
    They had to be dead square and he used them for router patterns.

    Almost all of them ended up a little out of square.

    I used the tig to heat shrink back to square.

    Each opposing corner has a corresponding obtuse or acute angle.

    Running a heating bead towards the inside of opposing obtuse corners (to draw in) and towards the outside of opposing acute angles (to open up) straightened them out.
    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Airco 300 - Syncro 350
    Invertec v250-s
    Thermal Arc 161 and 300
    MM210
    Dialarc
    Tried being normal once, didn't take....I think it was a Tuesday.

  11. #11
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Should I be heating red hot in the center under the bar, under the welds, and out an inch, or just under where the welds were?

    I haven't got red hot yet, but almost there. So far just under the welds w water isn't working. So now I'm going to go hotter. Now that I think about it, the other side needs to expand while one side shrinks.

    I work nights so I just got started.

  12. #12
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Do it the heat and water method. This isn't that big a deal and you need to try it just to learn some thing about it. It's really not that hard.

  13. #13
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    This is an old one, but very good for explaining some of the basics.

    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Airco 300 - Syncro 350
    Invertec v250-s
    Thermal Arc 161 and 300
    MM210
    Dialarc
    Tried being normal once, didn't take....I think it was a Tuesday.

  14. #14
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by stewbuntu View Post
    So far just under the welds w water isn't working. So now I'm going to go hotter.
    I would heat to cherry red, at least a 2” bigger diameter circle than the box tube. Then spray with water. Do not re heat until the metal is dead cold to the naked hand.
    Don’t pay any attention to me
    I’m just a hobbyist!

    Carl

    Dynasty 300
    V350-Pro w/pulse
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    Vantage 400





  15. #15
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    That is why they make clamps and bfh. Shrinking thin plate like that is tough. Clamp one edge with a 3/16 to 1/4 shim in the center. Swat the opposide side with a bfh until that half looks right. Remove the clamp and repeat on the other side. I could have that done in about the time it takes to get your torch lit.

    Once the plate gets over 3/8-1/2" thick my bfh isn't big enough and its time for the torch.
    Last edited by bent; 01-11-2017 at 11:27 PM.

  16. #16
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    I have to admit that my first thought was to beat on it with a sledge, also. But then I saw the replies from all y'all edumucated welderz on here and decided to keep my Neanderthal thoughts to myself until somebody else like me spoke up first.
    Applied Fabrications, LLC

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  17. #17
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by bent View Post
    That is why they make clamps and bfh. Shrinking thin plate like that is tough. Clamp one edge with a 3/16 to 1/4 shim in the center. Swat the opposide side with a bfh until that half looks right. Remove the clamp and repeat on the other side. I could have that done in about the time it takes to get your torch lit.

    Once the plate gets over 3/8-1/2" thick my bfh isn't big enough and its time for the torch.
    Its 3/8 plate

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  18. #18
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    http://www.farmersamm.com/welding-3/hd-jackstands/ Clamp a strongback across the bent area. Heat the convex side of the bend, hit it with water to shrink it. It may take several attempts. See the section on heat straightening.
    "Any day above ground is a good day"

    http://www.farmersamm.com/

  19. #19
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by MinnesotaDave View Post
    This is an old one, but very good for explaining some of the basics.

    Thank you everyone. This video is great

    Sent from my LG-VS985 using Tapatalk

  20. #20
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    So I just couldn't keep it red hot, only about 2 inches would stay hot using the cutting torch I had. So after heating one side Left or right of the bar, on both top and bottom, I put it down on some chunks of 4x4 and got it flat with a sledge hammer. I had a friend and after about 30 minutes of heating the water didn't work so we decided on brute force with heat, after another 30 minutes of heating we had it flat. We tried the vice first but I was worried we would break something. Hitting it in the middle one or two times with the supports out to the side did it and then we heated the other side.

    Sent from my LG-VS985 using Tapatalk
    Last edited by stewbuntu; 01-13-2017 at 05:03 AM.

  21. #21
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    Re: Warped a " DIY Warn style hitch mount" for my Christmas Winch

    Quote Originally Posted by MinnesotaDave View Post
    Heat and water are voodoo black magic though - not everyone can do it
    Especially when you chill the wrong side. "How come it's bending the wrong way???"

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