Tractor Stand - REVISED

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Tractor Stand - REVISED

Postby Stanton » Tue Jan 24, 2012 8:34 am

Was inspired by some of the tractor stands already on this site, so decided to make a pair. As with all lifting devices, make sure to put safety first.

These resemble Ricky Racer's stands more than the others (thanks Ricky!), but with a difference. I was having trouble getting a floor jack and a stand under the Cub's lift point; seemed they both competed for the same floor space. So, I decided to combine the two and let them use the same floor space. Here's what I came up with.

First, I started making a frame to hold the body of the stand in place while I welded the legs to it. My base was a doubled up portion of 3/4" plywood, but could any piece of stable wood. 3/4" x 3/4" pieces were added leaving a 12" x 12" clear inside dimension:

Image

Next, I measured the inside of the 3" square tubing and made a column to fit inside and mounted it to the base in the exact center (extra wood was added to the sides to keep the 3" square tubing suspended in the air at the right height:

Image

Image

The first angle iron leg was cut to length (measured at the joint or outside edge) then propped up against the body:

Image

Then, I scribed the bottom to get the correct angle. I want the leg bottoms to sit flush with the floor. This turned out the be 74 degrees:

Image

The other leg(s) were cut. Since I knew the angle, I cut them to the correct angle the first time, instead of scribing each one:

Image

As you can see, my bottle jack will fit under the bottom of the jack stand body:

Image

All four legs are welded to the body:

Image

Cross bracing is added:

Image

Then the center portion of the jack is drilled out and welded to the top receiver and bottom plate. The number of holes and spacing on your jack may differ. Suit to fit your needs:

Image

Image

It looked a lot better ground and wire wheeled:

Image

Next, I wanted some mid-level support. Something that would tie the middle portion of the leg to the lower part of the body. I thought the supports would be cut at the same 74 degree angle, but mine had to be cut at 66 degrees and fitted so they connect the inside of the legs with the corners of the body. Came up with this (jack is upside down):

Image

Finally done:

Image

And in use:

Image

Image

Disclamer: Be careful. Make sure you make good, solid welds. When using your new jacks for the first time, use other stands or wood cribbing for backup. Safety first; you are responsible.

UPDATED:
Here's a 3/16" steel plate welded to the bottom. Think they're finally done now:

Image

Image

Here's the REVISED dimensioned drawing if anyone wants to try it.

Image

Thanks to everyone who commented and made suggestions!!
Last edited by Stanton on Mon Jan 30, 2012 7:39 am, edited 2 times in total.
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Re: Tractor Stand

Postby Bill Hudson » Tue Jan 24, 2012 8:54 am

Stanton,

Extremely well done. Very versatile. Those puppies will hold up a tank.

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Re: Tractor Stand

Postby dgrapes59 » Tue Jan 24, 2012 9:13 am

Stanton,

Great approach to addressing your concerns, it goes to show you there is more than one way to skin a cat (or lift a Cub).

Nice job, thanks for sharing,
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Re: Tractor Stand

Postby RaymondDurban » Tue Jan 24, 2012 9:13 am

That is real nice!! Great work!! :D
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Re: Tractor Stand

Postby randallc » Tue Jan 24, 2012 9:22 am

They look like store bought, except better. Great concept. Wish I had the patience and knowledge, and ability to create something like that. But, alas, I'll just continue drool at the things you guys come up with and the amazing work you guys perfrom.
Thanks for sharing.
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Re: Tractor Stand

Postby Bill E Bob » Tue Jan 24, 2012 10:32 am

More elegant engineering :worthy:
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Re: Tractor Stand

Postby Winfield Dave » Tue Jan 24, 2012 11:40 am

Very, very nice....well done.
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Re: Tractor Stand

Postby Jim Becker » Tue Jan 24, 2012 3:06 pm

Whenever I do something in a way that I haven't done before, I try to ask myself what could go wrong. When it involves jacking or blocking, I try doubly hard to look for potential hazards. In this case it took the second look, but I do see a risk. When the jack is in place and holding the load, there is no weight on the lower piece of your stand. At that point it is only serving as a bit of decoration for the upper part. The upper part is acting about the same as a piece of 2x4 standing on end to extend the reach of a jack. The width of the jack's base and the placement of the jack stand against the lifting pad is all that keeps the parts upright. If the pad is off level it will be adding a lot of side pressure on things.

I see two ways to address this.
1) Add some sort of base plate so that the jack exerts down force on the bottom half of the jack stand.
2) Add bracing near the bottom of the jack stand that will hold the bottom of the jack at the center of the jack stand. (This would probably make your jack captive to the stand while the stand is in use.)
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Re: Tractor Stand

Postby Stanton » Tue Jan 24, 2012 3:47 pm

I think I see what you're talking about.

By encompassing the bottle jack within the stand/system, the bottle jack would be pushing against the bottom plate or stand, instead of the ground or floor. Therefore, by keeping the jacking pressure only touching one element (the stand) instead of two elements (the stand and the floor), I've reduced the risk of side pressure shifting the tractor off balance.

Thanks for the critique, it's appreciated.
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Re: Tractor Stand

Postby Jim Becker » Tue Jan 24, 2012 4:18 pm

Yes, exactly. Having the weight on the bottom of the jack stand brings the whole jack stand base into use rather than just the jack base, increasing stability. It also supports the upper part of the jack stand keeping it in line with the jack.
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Re: Tractor Stand

Postby ricky racer » Tue Jan 24, 2012 6:19 pm

I like it!!! Image Very well done. It is amazing, the fixture you built is very similar to the one I built, except mine was made of steel. I made the fixture because I was making numerous stands to offset the price of my new MIG welder (I was selling them locally). I like the addition of the jack pad on the bottom of the center section. Great idea!! Image

Jim Becker wrote:Whenever I do something in a way that I haven't done before, I try to ask myself what could go wrong. When it involves jacking or blocking, I try doubly hard to look for potential hazards. In this case it took the second look, but I do see a risk. When the jack is in place and holding the load, there is no weight on the lower piece of your stand. At that point it is only serving as a bit of decoration for the upper part. The upper part is acting about the same as a piece of 2x4 standing on end to extend the reach of a jack. The width of the jack's base and the placement of the jack stand against the lifting pad is all that keeps the parts upright. If the pad is off level it will be adding a lot of side pressure on things.

I see two ways to address this.
1) Add some sort of base plate so that the jack exerts down force on the bottom half of the jack stand.
2) Add bracing near the bottom of the jack stand that will hold the bottom of the jack at the center of the jack stand. (This would probably make your jack captive to the stand while the stand is in use.)


Jim, I understand your concern but from the explanation given by Stanton it seems safe enough to slip under the tractor to jack it up an inch or two to insert the pin in the stand. Common sense says that you can't jack one side of any tractor much higher than the other side as the tractor needs to stay fairly level while getting it up on jack stands. It looks to me that the use of the jack under the center section to change the height of the suspended tractor would be a nice option providing the adjustment holes are spaced close enough so you don't get one side to much higher than the other.

Stanton, great job!!
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Re: Tractor Stand

Postby Jim Becker » Tue Jan 24, 2012 10:19 pm

ricky racer wrote:Jim, I understand your concern but from the explanation given by Stanton it seems safe enough to slip under the tractor to jack it up an inch or two to insert the pin in the stand. Common sense says that you can't jack one side of any tractor much higher than the other side as the tractor needs to stay fairly level while getting it up on jack stands. It looks to me that the use of the jack under the center section to change the height of the suspended tractor would be a nice option providing the adjustment holes are spaced close enough so you don't get one side to much higher than the other.


An inch or two is clearly enough off level to move the contact point of the pad clear to the edge of the jack stand. Common sense says you shouldn't use fuzzy concepts like "seems safe enough", "fairly level", "close enough" and "to much higher" when you have a half ton resting on one point. Stanton picked up the point of my concern. Perhaps if you had the actual parts in your hands the concern would be clear to you as well.
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Re: Tractor Stand

Postby BigMatt » Wed Jan 25, 2012 9:33 am

Good points Jim. After reading your explaination and looking at the pictures again, you are exactly right.

I hate to say it, but that beautiful stand needs to be modified with a base plate or something.
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Re: Tractor Stand

Postby Barnyard » Wed Jan 25, 2012 10:03 am

BigMatt wrote:I hate to say it, but that beautiful stand needs to be modified with a base plate or something.

The way I read Stantons's last post, I have a feeling that is in progress.
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Re: Tractor Stand

Postby BigMatt » Wed Jan 25, 2012 10:09 am

Barnyard wrote:
BigMatt wrote:I hate to say it, but that beautiful stand needs to be modified with a base plate or something.

The way I read Stantons's last post, I have a feeling that is in progress.


Agreed.
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