I cannot say for sure about bigger, but I have certainly removed 12" trees via the ripper and push over method. I agree that any bigger than that gets dicy as it would be hard to push them over even after ripping lateral roots. Trees with big tap roots might be tough too. Still, a bigger excavator would make quick work of those and you wouldn't be digging out stumps for the next year or two.
So I put an hour or 2 on the tractor tonight using the grapple. The more I use it, the more disappointed I am with it. It seems 9 times out of 10 when I pick up a pile of stuff with it, almost all of it falls out. 2 different things are causing it, 1 is the lid design, and the other is the tine spacing.
With the lid design, it never actually can pinch anything between the tines. Also, having only 2 upper tines, there is little chance of actually pinching anything.
Even 'scooping' stuff up doesnt seem to go well for me. I seem to dig more dirt than anything with it!
I can see it working just fine with pile of brush, but I am dealing more with deadfall and firewood type chunks.
I also discovered today why it 'clatters' so much when adjusting the roll of the bucket, or up/down (anything really that jerks it in general). The quick attach openings are too large, and I have almost a 1/4" gap between the pin and the 'locking' side of the opening.
I know some of my issues are possibly still adjusting to using it, but I can see some things are not going to resolve with experience.
I wonder if I am asking too much. All I want to do is clean up the area in the pics...
Attachment 317225Attachment 317226Attachment 317227
I forgot the picture that shows the gap I am referring to....
I have a special adapter for the FEL that allows me to mount 3PT implements up front. If I didn't have kids to make piles and had a large area, I would probably use a landscape rake on the FEL pointing forward to push stuff like this into a pile and then come back later with a grapple.