PTO powered stump grinder build

[ArlyA]

Just follow

 

[shooterdon]

Mr. Morris is an amazing craftsman. I have seen his work on another forum and love his posts.

 

[jwmorris]

Thank you, Don.

I was finally going to use a fancy cutter….and it was smoked…so I used the lowly hole saw. Yeah, 1” of steel takes the better part of a beer.

This is the main hinge that allows the grinding head to piviot away from the stump, if feed is too aggressive, so one can stop advancing and allow it to “eat“ it’s own weight until it is perpendicular, then proceed.

Not going to insert the oil impregnated bushings until bearing surface tube is welded in place and cooled, then will final ream.

Upside down; however, arranged like this in the end.

 

[jwmorris]

Cut the other mid plate mount and a couple of gussets today.

Can see the ”from the back of the tractor” view of the hinge in the last photo. Will be two pins, as a finished produc, just easier than a fixture to align them with 1 piece of barstock.

 

[jwmorris]

Side tracked a bit but made it back for a little progress. Getting the 3 point mid plate together.

 

[jwmorris]

It‘s funny, how many things can cut in line of a ”for fun” project…

I did get the main hub machined and drilled and a little welding done. So, there’s a little progress.

 

[jwmorris]

Had Dad stuff to do again but would really like to take it out for a hot lap before next year, so I knocked out another few inches of weld. Not my best work but should be sufficient.

 

[jwmorris]

If it breaks, I have $100 that says it’s not going to be the top link attachment point…

 

[Renze]

Nice work !

 

[shooterdon]

I have seen what Mr. Morris does on other stuff but will not comment on it here unless he decides to show it.

Very talented guy.

 

[arto98607]

It sure looks like the OP knows what he is doing!

I went different route and bought well used Vermeer SC362 stump cutter needing some minor rebuilding due to fairly high hours. It was mainly just replacing worn out bushings in the boom head "swing" & up/down setup.

Keep us posted please!

 

[grsthegreat]

Nice work. Just tagged in so i can follow this project.

 

[jwmorris]

I machine the piviots for the oil light bushings today.

They are now ready to weld to the grinder side hinge plates.

Also, welded the main shaft.

Faced off the back side and center drilled it, so it’s ready for machining and welding on the drive hub.

 

[jwmorris]

I decided I wanted a little more clearance for the main shaft, it didn’t need to be as tight as I had it. So I tacked the drop back in a little high as used it as my guide.

Also cut the last piece I needed from the boiler, bottom of 3 pt frame.

I then turned to the hinges, I needed a locking pin for storage and really don’t feel like drilling a 3/4” hole through 1 1/2” of steel by hand, so I machined a part to align all of the hinges and tacked them together to drill them all at the same time.

Now, I can weld the hinges to the plates.

 

[MTGreen]

Fantastic work, thank you for sharing. Tacking the drop in a little high to use as a guide to slightly enlarge that cutout was a great idea

 

[jwmorris]

Thank you. I had hoped there might be some interest to keep me going. I have lots of projects that are in limbo, the ones that get finished are the ones that stay in mind. Too easy to get side tracked…

I finished out welding the attachment end tonight.

Then welded the piviots to the hinge plates.

Pressed the bushings in.

That operation makes them ”under” on the ID so I ream them out.

Then stacked everything up, starting to look like something now.

 

[mrmikey]

That is an awesome bit of fabrication JW, something you should take pride in.
I do have one question tho, any concerns about the welding on the end of the input shaft re breaking, not the weld the actual shaft?

 

[jwmorris]

I think the pillow blocks will go before the 2” cold rolled steel shaft. I will admit to not being a fan of it, why I did press it in first and wait until after welding for final machining.

I have lots of over run clutches that have failed over the years but have never had one break at the welds, it’s always an internal failure.

I had actually thought about using one of the broken ones at first and just weld it to the shaft but that would have made removing the front bearing for replacement in the future much more difficult.

It too was welded though. So I’m cautiously optimistic.

 

[jwmorris]

Have honey doo’s tonight but did drill and tap the outside hinge brackets and made anti-rotation/retaining tabs and welded them to the 1” shafting that are the hinge.

 

[jwmorris]

I drilled and tapped the hinges for grease fittings yesterday and made a pretty good push on it today.

I used some 1” couplers and a short piece of shafting to align the two hinges for welding.

The welded it out and made two gussets out of some of the drop, for the grinder side hinges and welded the chassis out (if I don’t add a few more gussets).