Aluminum rear end case brace

[hhc70]

Originally Posted by Sam Mac

Not sure if these will work on the rear PTO type 3 point hitch tractors without some modification. I need to see some close up pics of how the hitch mounts to the rear.

The SGT style cat. 0 rear lift uses the 5, 7 & 9 o'clock bolts (on your pictures) to hold the lower arm mount. So those brackets would be pushed out by the thickness of your plate. With your plate, and the lift arm brackets, it would need a 4 1/4" long bolt. A 4" is called for with the arm brackets alone.

The previous owner of my 1572 had made a "U" shaped bracket to hold the rear end when they broke off the bolts that connect to the frame. It did not not work with my 3 pt (from Bill Ruegg), because it interfered with the mounting of the 3 pt rockshaft bracket, and the square "U" was blocking the area for the arm pin to be. Where your solution extends forward to handle moment only (and I have since extracted and helicoiled the top holes), it seems that it should work just fine and not cause any of these interference issues.

Now if someone was clever, your idea could be combined with the lower arm mount brackets, to leave the arm brackets in the factory intended location, yet add that better moment connection to the frame. If you don't take offence, I believe that I your idea and my welder will be put to use shortly.

My other option is a cast iron rear end, but that does not work with the diesel tank (there is a thread going on this now). I do believe that another aluminum rear end without reinforcement will fail again, so I do not consider that an option. 5 minutes with the John Deere Model 30 hydraulic tiller breaking ground is all it takes to loosen those bolts.

[CADplans]

I have never really been under my 1872, but, considering what I do to mine, pulling 2,000 pound + loads of mulch, cultivator, plow, drag and the "HandyMom", I would say the added strength coming from the 3 point hitch is my salvation.

I just checked my bolts since the start of this thread, they are all tight.

This tractor does not mow anymore, but, it sure does some abusive pulling, EVERY WEEK!



If Sam Mac's brackets strengthen as much as the 3 point hitch does, the modded tractor should be good to go!!

I do like steel better than aluminum, are the Sam Mac brackets aluminum?

[CADplans]

One other note. when I added the CADplans designed hitch to this tractor, I cleaned out those blind holes, and accurately determined the maximum length bolt I could use. I wanted the bolt to engage every thread possible.



This hitch bolts on using the same holes Sam Mac is using.

When the EXACT length bolt was not available, I selected the NEXT LONGER length bolt, then added washers to make up the difference.

The bolt is far stronger than any of the threads in these housings. Every thread counts!!

You can see the washer under the bolt head on the left side of the hitch.

That is a washer I had that is about 3/16" thick.

[Sam Mac]

Originally Posted by squatch

I have a question on this. My Super has this rear plate on the frame.


It seems like it goes a long way to keeping the rear frame rails from squirming. My bolts and case are all good. Is it possible that this is all that is needed to keep these from working loose in the 1st place? I've only seen one super with the busted loose bolts. It didn't have the rear plate. Can anyone shed light on this.

I had a busted front mount on my 2182 with the rear bagger plate. This tractor will be getting a bagger plate also. Pretty sure Cub123 had a busted case also with a rear plate. Not trying to scare you guys or sell these but I have 3 of these tender behind Supers all will be getting the brace, this is a lot cheaper and easier than rebuilding a rear.

I'm going to make up a few sets and if they sell OK if not OH well.

[Sam Mac]

Originally Posted by Mike McKown

After giving your brackets a second look, it appears that you don't have the front of the bracket bolted to the frame. Just that the bracket comes up UNDERNEATH the frame rail and that would still stop the frame twist in that area without unduly stressing the frame in other points.

If that's the case, good move on your part.

Mike

It is bolted to the Haban mount on the prototype but I may weld it for production version. I want to make the area around the trans as ridged as reasonably possible. My idea for the SGT version is to use a modified version of the Haban mount in conjunction with my brace. It makes for a nice easy way to attach it to the frame and if you have an older style 60” Haban deck or a Haban plow your covered. It will also help transfer snow plow loads straight to the rear axle.

[Oak]

Looks great Sam! I may need to place an order. I don't think these machines get broken from pulling as I tend to tranny slam my 882 a lot when plowing and I think the weight is pretty much distributed to the frame and rear. I noticed for the first time this year when plowing my garden that I flexed the frame so much that either the driveshaft fan or radiator fan hit something it wasn't supposed to. I know the diesel Deere guys have a similar issue because I don't think their engines and radiators are in the same cradle like the Cubs and the flexing will cause the fan to hit the radiator shroud. If you can flex a Deere frame you sure can flex a Cub frame.

I think the rear plate helps a lot and I now check my bolts a few times a year but this should help a lot also.

Good job Sam! Send a few down to me and I will test them for free for ya.

[Mike McKown]

Originally Posted by Sam Mac

Mike

It is bolted to the Haban mount on the prototype but I may weld it for production version. I want to make the area around the trans as ridged as reasonably possible. My idea for the SGT version is to use a modified version of the Haban mount in conjunction with my brace. It makes for a nice easy way to attach it to the frame and if you have an older style 60” Haban deck or a Haban plow your covered. It will also help transfer snow plow loads straight to the rear axle.

Sam,

If the price doesn't get in the way, put me down for wanting one. 2084 Super. 54" mower. No 3 point. Not worried about the snow plow.

[Sam Mac]

Mike

Looks like they will be around $100 for a set plus shipping. They will have the Haban style bracket only because it makes the best place to mount them on the SGT's. Still doing a little fine tuning on the design. Should be done with the design and prototypes by the end of the week. Gonna have a couple more sets cut and then see what the machine shop will hit me to do the drilling work.

Sam

[Mike McKown]

I don't have the Haben bracket. If that comes with it, that's fine. I'm in.

Your estimated price is plenty reasonable for the material/work involved.

[Sam Mac]

Originally Posted by Mike McKown

I don't have the Haben bracket. If that comes with it, that's fine. I'm in.

Your estimated price is plenty reasonable for the material/work involved.

Mike

Plan is to include the Haban style bracket and the longer bolts that will be needed for the axle tubes.