Stalled the engine on my 2520 using a chipper

[greg_g]

JD specs the 2520 at 20.5 pto and 26.4 engine, so either way I am in the range.

Not for whatever you stalled the engine with. Take another look at that link you posted, and note the "hp requirements for max cap". With chippers, you worry about the top end. Bottom and middle don't mean squat. I still maintain the BX32 is a more appropriate match for your 2520.

//greg//

 

[buickanddeere]

I apologize for not understanding this fully and would seek some feedback regarding pto brake/clutch. My situation is a bit different but the result of stalling the tractor is the same. I have been putting in fence posts and because of the location...I can run into a lot of rock. Sometimes the rock is so large, the post hole diggers "rides" on top of the rock because it cannot get past it, other times it "grabs" too big of a rock and breaks a shear pin, or as I experience a couple of times yesterday, the auger just bogs down and stalls the tractor. In all the aforementioned examples, the engine is runing at the slowest speed. Am I damaging my tractor when the load on the PTO cause the tractor to shut down?

One more reason to avoid pro driven post hole augers . Instead use the loader bucket mounted hydraulic driven post hole auger.
If stuck, it just stalls. Reverse the auger and good to go. Down pressure too for digging dry clay soils.

 

[s219]

The main difference between the BX-32 and 42 -- in terms of what the tractor can support -- is the size and shape of branches you can/should feed in. I can see how it's possible to overload a tractor more easily with a 42, but that's about it.

Used sensibly, the 42 should be fine on a 2520. I run one on my Kubota B2920 (21 HP PTO) and it works like a charm. I generally only chip stuff smaller than 3" diameter; anything bigger goes to the firewood pile. When chipping dry branches, I try to send a green branch through every once and a while. I chip beech, oak, maple, and pine.

Just because the chipper is rated to 4" diameter doesn't mean you need to feed it that way; in fact, the main benefit of the 42 to me is that the feed chute and 4"x10" opening can more easily accommodate branches that might be crooked, twisted, or in bunches. That doesn't stress the capacity of the tractor or chipper, but it does significantly improve productivity and workflow. Given the prices, I'd only suggest a 32 if the 42 was physically too big. The 42 is a better value, easier to use, more productive, and will have much better resale appeal. Just don't hook it to a tractor on the low end of the HP range and then send an oak 4x10 through the chute!!

 

[RonS]

I agree with s219. I have a 2520 and a BX42 and have never had a problem with it. Granted 4" stuff usually gets bucked and burnt, but not always. I have lots of chipping hours and no issues.