Never Scrap Anything

September 24th, 2022

Tractor Forks Gradually Materializing

Looks like my tractor brush fork attachment may be usable by the time Hurricane Ian either gets here or misses us.

When I converted my tractor bucket to quick attachment, I bought a heavy mounting plate and cut the ends off for the bucket. I welded them to the bucket, and this left me with a big piece that could also be turned into a mount with some modification. I decided to use it to hold brush forks on. I have been cutting and welding, and now I have two plates which should be suitable for attachment to a heavy frame which will hold 4 brush fork tines.

I had to make these plates wider, and I also had to add metal to the bottoms. Before I did this, it would have been hard to attach a frame in a way that put it at least as low as the bottom edges of the plates.

Brush forks need to slide freely on the ground, especially if you want to use them as forklifts occasionally. You can’t have something protruding down behind them. In order to have the tines flat on the ground and have ample steel to weld the tines to, I needed to have the frame on the ground, too.

It’s a complicated problem, and my explanation probably doesn’t make it very clear. If I hadn’t added the additional steel, the mount plates would have extended 2.5″ down below the rear ends of the tines. The tines would not have slid easily on the ground, and the bottoms of the mount plates would have banged into things a lot.

It took me a couple of hours yesterday to cut out the steel pieces to add to the plates. I had to use the mill as well as a big angle grinder with a cutoff wheel. Today it took me another 90 minutes or so to weld everything together and grind off the lumps. It was not easy to weld these things and make them pretty because of their shapes, so I settled for ugly strong welds followed by a lot of grinding.

Tomorrow’s work should go by fast. I have two 56″ pieces of 2″ by 2″ tubing with 1/4″ walls, and I have 4 shorter pieces of 2″ by 3″ tubing with 3/16″ walls. I will turn all this into a sort of ladder structure which will be my attachment’s frame. The long pieces will run horizontally, and the short pieces will be welded between them at intervals of around 15″. I should be able to accomplish this in an hour or so. Then I have to weld the frame to the mounting plates.

I figure I should be done in three hours or less.

After all this the real fun starts. I have to cut the rear portions off my old forks so they can be welded to the frame. I have to weld them in place. This will give me 4 pieces of tubular steel around a foot long. I will have to cut these so they can be used as struts to keep the tines from bending when horizontal loads are applied to the tips. I figure one strut per tine will do it.

I think I may be able to get this work done in a day. Then it will take me another day to weld it all together. This will put me in position to use the forks if trees come down this week. If they don’t come down, I’ll have time to paint everything.

Once this project is done, I’ll have a quick-attach tractor and quick-attach forks. I’ll be this area’s king of cheap quick-attach tractor guys.

By using bits of the old mounting plate, I saved around $140. The whole project will cost me $198 for steel, plus whatever paint and consumables cost. And maybe 4 bolts. This estimate is based on the assumption that this will work. If I ruin my old forks and can’t make good new ones, I’ll be spending a lot correcting the problem.

I hope this thing will be as strong as I need it to be. I believe it will be. People tend to overbuild weldments and underestimate what they can take, and this generalization applies to me. If I’m only a little worried, it probably means the attachment will be considerably stronger than it has to be.

I am amazed how nice the shop is now. I get things done fast. I know where most things are. I don’t have to search much. Thank you, God, for making this dream come true.

One Response to “Never Scrap Anything”

  1. Ed Bonderenka Says:

    “People tend to overbuild weldments”
    I worked with a guy like that.
    I requested a support platform for two robots.
    Somehow, it got built too tall.

    The rectangular tubing could have been 3/8″ wall but was 3/4″.
    At least I didn’t have to fix it.