Building my side dump trailer

Discussion in 'Trucks and Trailers' started by IMAGE, Apr 3, 2008.

  1. IMAGE

    IMAGE LawnSite Bronze Member
    from midwest
    Posts: 1,134

    Yep, fastcat is right, I have a winch lifting on each side. They are wired to the same controller, so they work together. They should be able to lift 8000lbs, I dont think grass will be that heavy!
  2. LawnScapers of Dayton

    LawnScapers of Dayton LawnSite Silver Member
    Male, from Dayton, OH
    Posts: 2,574

    Just a picky detail.....but it doesn't double the winches power. It actually cuts the weight lifted by the winch in half. The other half of the weight is supported where the end of the cable attaches to the post... You have create a 2:1 mechanical advantage.......

    Nice work the way......
  3. IMAGE

    IMAGE LawnSite Bronze Member
    from midwest
    Posts: 1,134


    I know that, thats why I said:
    "Doubling up the cable effectively doubles the winches power, because it cuts the line speed by 1/2"

    Which is the same as a 2:1 advantage...
  4. cantoo

    cantoo LawnSite Silver Member
    Posts: 2,910

    Image, couple of things. The winch cable hooking point to the bin looks like a round bolt of some sort. Make sure this is a welded bolt and is suitable for the weight you are lifting. I've used that style of winch before and ended up pulling it apart inside. We hooked it between a couple of 4 wheelers to see how strong it was, pulled right apart with very little effort. This means when it breaks it will freewheel causing what ever is up to come down very quickly. Make sure you are nowhere near the bin when you are lifting. You may want to look into a hydraulic setup for the future to be safe.
    You might want to hinge the side panel on the inside of the trailer. This way you only have to lift the bins half as far to dump. If you need to fill the bin completely then raise the side up and fill er up. Green grass will pile pretty high so I doubt you will even need to hinge it back up.
    I like your setup, we throw ours in the dump truck but we only collect on a couple of properties so it's not too bad.
  5. IMAGE

    IMAGE LawnSite Bronze Member
    from midwest
    Posts: 1,134

    cantoo- the bolt is a cast bolt, it has a solid loop, no welding required to close it. It should be plenty strong.

    Of course we will use safety when dumping it, but since the winch has power in and power out, I think it should be pretty safe. It's not one of the ones that free spools out. Plus there is 2 winches, and they would both need to fail to have a problem.

    As for the sides, I did think of hinging them at the half way point, but since I plan on adding taller sides yet to make a leaf box, I wanted it to be pretty strong. I guess I will just have to see how it goes and it could get some major changes next winter.
  6. lawnproslawncare

    lawnproslawncare LawnSite Senior Member
    Posts: 437

    So what kind of mower are you using? I'm curious if your using a power dump model or bags.
  7. IMAGE

    IMAGE LawnSite Bronze Member
    from midwest
    Posts: 1,134

    I wish. But I dont want to buy from my local walker dealer. So I have a Lazer Z with 3 bags, and a metro, with the collector.
  8. yardmanlee

    yardmanlee LawnSite Senior Member
    Posts: 898

    i noticed the other side a while later but could'nt delete my post. nice fab work !!!!
  9. Laner

    Laner LawnSite Senior Member
    Posts: 327

    I see it looks like you build a steel frame and them fastened plastic sheeting to the outside and bottom. How heavy of steel (thickness) did you use? Channel, angle or tubing? This is almost exactly what I am looking to build on my 22 ft trailer, however I would like to be able to remove the box or the side toward the bed area in order to haul long items on the trailer as well. With the setup you have it looks like I could pick the box off with the forks on my skidloader.
  10. IMAGE

    IMAGE LawnSite Bronze Member
    from midwest
    Posts: 1,134

    Great minds think alike, but I didnt have time to do it like that. But it could still come off easy.

    This is the material I used:

    The lower box frame is way overbuilt. The 2 outside rails at the front and back are 2x4 3/16" tube, and the cross tubes are 2x3 1/8" tube. The uprights are just 1" square thin wall tubing to bolt the plywood to, and the sheeting is attached to the plywood.

    Let me say that it is way to heavy for what it needs to be. The cross tubes could of easily been 2 x 2 1/8" Angle, would of saved about 40 lbs I am sure. And the outside tubes should of been out of the stuff that the cross tubes are. That would of saved another 40lbs or so.

    To take the box off all that needs to be done is pull the hinge pins, and lift it off. If I did it again I would take the time to put fork pockets in the tubes.

    This still leaves the back cross brace (winch support) in the way of the trailer deck, but it could be pinned on each side, to make it easily removable also.

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