I've got the WC-68 behind the LX2610SU. Same 19 horsepower at the PTO that you have.
Have I stalled the tractor with it? Yes. My fault entirely. Too much infeed on a very large chunk of tough elm. The good part about stalling the tractor is that you're not likely to be breaking shear pins with it. The bad part about stalling the tractor is stalling the tractor. Diesel engines don't like that. Not the end of the world, but best avoided if possible.
Have I plugged it? Yes. Big chips happen when the last 5 or 6 inches of the material being chipped goes past the infeed roller and gets trapped between the flywheel and the roller. Didn't notice, but one got stuck in the chute where it swivels, and it was a little scary to see smoke coming out of the chipper instead of chips. The chips were chewed up so fine and packed so tight in the housing they nearly caught fire before I decided I really should stop and see what's going on. Again, my fault entirely for not stopping as soon as I noticed no chips coming out.
What do I like about it? It turns big brush into little chips, very efficiently. I ran mine about 10 hours one day, and only used about 1/4 tank of fuel. HEAVY(200LB) flywheel, 4 knives, no belts turning the flywheel. Single belt drives the infeed hydraulic pump. The 200 lb flywheel hogs through some pretty serious size stuff a lot better than anticipated. I've got some 1/4" thick disks from some sweet gum that are nearly 5 inches in diameter where it sliced them off clean. It looked more like a meat slicer cut them than a chipper. It's HEAVY. 850 lbs in the crate, 780 lbs without. The reason for mentioning the in-crate weight is you gotta get it off the freight truck somehow. The LX will lift it with the LA-535 quite easily, but it's a pretty high lift off the truck. Clear the trailer, and get it close to the ground ASAP. I tugged the steel crate/pallet into the edge of my bucket, and then used my chain around the crate to curl back and take the weight. Then, backed up about 4 feet to clear the edge of the trailer and lowered it down to about 6" off the ground to transport it to my garage for assembly.
I took my sweet time, and was able to assemble the WC-68 in about 2 hours. The infeed chute is probably the most difficult part to get all the bolts in and tight There's a lotta bolts, and the chute has to be assembled in the right sequence, or it's hard to put the safety bar on.
What do I NOT like about it? Single infeed roller with monster springs makes feeding in 3"+ sized material a bit of a pain if it isn't cut diagonally on the heavy end. This is where the WoodMax model with the dual rollers will probably excel. However, the WoodMaxx does about a 2x speed step-up with belt driven flywheel and has only two knives. (Net result is about the same 4 knife strikes per PTO revolution and about the same energy put into the knives). Can't make a call on better or worse, but the flywheel is lighter, and the speed step-up is likely to tax the 19 HP more. Higher knife speed could cause some knife edge heating and affect knife life. I simply don't know knife performance on the WM-8H versus the WC-68. Infeed issue on the WC-68 is especially worse with hardwoods that have a soft but stringy bark (Elm/River Birch, etc). This can be overcome by starting a smaller branch first to push the roller up, then feed the larger branch in which will stop the smaller branch by removing infeed roller pressure from it. The trick is to get the large limb started before the chipper eats too much of the smaller one. Problem? Not really, just a learning experience.
Knife setup can be a little tricky on initial inspection and assembly checks. Make sure to leave at very minimum 1/16" clearance between the anvil and the knives. It's difficult to see the gap between the anvil and knife, and one of my goals is to make a jig to put between the flywheel and the anvil to gap the blades quicker with no risk to the knives. The flywheel will thrust a few thousandths. The shaft is in ball bearings, so it won't be much, but it doesn't have to be much to do some serious damage to the knives. If if it's tight in the gap, the knives are likely to hit the anvil and dull them. I got mine just enough to see the knife damage, but not enough to knock them out of commission or flip them yet, but it was NOT a pretty noise when they hit. I may have damaged them too much to be ground back out, though. Sharp knives are absolutely necessary for best performance if put a big chipper on a small tractor.
Finding the 'sweet spot' for the adjustment of the infeed valve forward feed detent is probably the hardest thing I've found to do. Too tight, it doesn't want to come out of Forward and stop the roller. This is how I stalled the tractor at least twice. Too loose, the vibration from the chipper will make the safety bar drop and stop the infeed.
Overall quality is A Plus, though. Very well built chipper, and it's all the chipper my little LX wants, but for the most part, unless I'm just being an idiot with it, the LX handles it very well. It gobbles up the small stuff as fast as I can possibly poke it i the infeed chute. I went through a pretty massive pile of brush in about an hour, and was then left wondering what I'd do with the rest of my afternoon. I cut down some more undergrowth and fed the WC-68.
