Anybody adapt a Cub fast hitch to a Super A?

mkirsch · Dec 27, 2008

Beware, the mad scientist that lives in my head has been busy.

I have "most" of a Cub Fast Hitch, meaning the mounting brackets, the bail, the pull bar. I bought it off ebay on a last-second snipe without realizing how much it was missing. Paid too much, drove too far... You know the story.

This morning, I got to thinking (dangerous) that my Super A has everything that the Fast Hitch is missing. I could fab up a set of plates to adapt the Cub mounting brackets to the Super A finals. I could use the Super A's rear rockshaft. I could fab up an arm to run the depth control off the right Touch Control arm.

Yes, it won't be "right" but don't they give points for creative use of bad purchases?

Bigdog · Dec 27, 2008

Sounds like an interesting project. Post some pictures when you are done.

Hugh MacKay · Dec 27, 2008

mkirsch: You should be able to do that. I built one starting with nothing but a fast hitch socket off a Farmall 560. Rather than trying to mount the hitch bail to the SA final drives. Take height adjustment bolts out of the U drawbar, back up on 6x6 blocks and let drawbar swing down and back up on front side. It makes an excellent hitch bail, plus it doesnt take long to turn it back to drawbar if you so desire.

The Cub vertical links will be a bit short, however you have to design something to convert to hooking to SA rear rockshaft. Mine worked fine, I even plowed with it. I'd have to go through my files, however there might be some photos kicking around. I haven't used it since I got the 140 and now have two factory one point fast hitches. Plus I have a woods mower on my SA.

Tractor Sam built one and fabricated it all except the U drawbar and the rear rockshaft.

SuperA-Tx · Dec 27, 2008

I believe the coupling beam for the SA and 140 are bigger than what a Cub coupling beam is.

Would that matter to you?

mkirsch · Dec 27, 2008

Nope, won't matter because I have the matching pull bar and bail.

I was out in the shed this afternoon and it looks like it shouldn't be a huge deal.

One question: The drawbar is held on the cub with 5/8 bolts threaded into the final drives. On the SA, it looks like studs threaded into the final drives, because there are nuts there. Are they through-bolted, or are these actual studs threaded into the final drives?

Anonymous-0 · Dec 27, 2008

Actual studs, at least on my Super A. But if I recall right, it was a coarse thread (on the final drive side) and fine thread on the nut side.

Pete

SuperA-Tx · Dec 27, 2008

They are stud bolts with course thread into the final drive and fine thread where the nut end is. You can see the hole on the other side of the final drive, might be filled with dirt. I would hate to think how hard those things might be to take out after all these years.

Hugh MacKay · Dec 27, 2008

mkirsch: The others are right about those studs, fine thread to the nut and coarse thread going into casting.

BE CAREFUL here the hole closest the axle, one each side has a bottom, part of the casting. If you use too long bolt it will break out that bottom, and the chunk of casting falls into bull gear sump. This applies both front and rear of axle on SA final drives. Please don't ask how I know, it happened 50 years ago.

I suspect the fast hitch pull bar is shorter on Cub than SA-140. You may have to extend that. This is why I recommended using the drawbar in my earlier post. Doing it as I suggested in my earlier post requires a shorter pull bar. I also think your going to encounter problems trying to bolt the Cub hitch bail to SA final drives.

mkirsch · Jan 2, 2009

UPDATE: Well, my original idea of making adapter plates to allow the use of the Cub brackets and hitch bail isn't going to work. There just isn't enough room down there.

I had hoped the Super A's spacing between the final drives was about an inch wider than the Cub's. That would've been perfect. However, the Super A's spacing appears to be about 1/2" NARROWER than the Cub. Go figure.

I'm on to Hugh's idea of swinging the drawbar under and using that for the bail. It's a downright elegant solution. Wish I'd thought of it last spring before I went to all the trouble of turning the drawbar around for the plow.

[With the 1000 loader on it, you can't put the drawbar up front for the plow, but the previous owner told me that it worked just fine from the rear position, and even had a custom built extension for the depth control. It worked quite well to plow a friend's garden.]

If this works, does anybody have a Super Chief frog in decent shape that they want to get rid of reasonable? I'll have to upgrade my FH Cub plow beam to a 16" bottom to make the old A work a little.

Anybody adapt a Cub fast hitch to a Super A?

mkirsch

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Bigdog

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Hugh MacKay

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SuperA-Tx

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mkirsch

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Anonymous-0

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SuperA-Tx

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Hugh MacKay

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mkirsch

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