Kytractor said:
Do You remember what forum The anbo that had been twisted was in? My dealer priced the Wr long 72
grapple in the high twos. It would seem the way the clam shell is designed that it would be easier to push up against the brush or logs and then clamp down on it and tilt up. Is the open bucket design harder to slide under an object?
Sorry, I don't recall specifically but I'm sure a little search work would locate the post.
The clam shells are nice for picking up smaller debris. However, the more "traditional" root
grapple like the one in my avatar do very well with brush and logs and rocks. Indeed, I think the clamshell has some disadvantages when going after rocks and larger objects because the only thing holding the object in place is the clamp pressure while with the traditional grapples you really cradle the object(s) in the bottom and just use the upper clamp to hold them from falling out when you are moving. Kinda like the difference between picking up an object with two fingers vs placing it in your palm to lift and carry. The clamshells also have a bit harder time leveraging things out of the ground as they have shorter more vertical bottom tines so you cannot get as good leverage. Finally, they have a shorter reach with the bottom tines so you will find it harder to get under the roots of a bush or tree to pop it out of the ground intact.
Intact brush as in bushes and small trees are easy for both types of grapples. The clamshell has an advantage in "pick up sticks" but I don't find that is such a common task. If the "sticks" are a couple of feet or more long then there is no particular advantage for the clamshell. A clamshell can be more efficient than a single upper jaw
grapple in scooping up large numbers of sticks spread around an area rather than piled too.
Whichever type you get, don't get one as wide as your primary bucket. That is a common misconception. Narrower grapples weigh less so leave you with more payload capacity. I can lift a lot more with my 280lb Millonzi 48 inch light duty
grapple than I could if I had a 800lb Anbo. The narrower the
grapple the more force you can apply to an area of root, rock etc while breaking out and the narrow grapples are always lighter than their wider cousins. A wide clamshell is more vulnerable to the sort of torquing of the upper arm with an asymmetric load that I described in the earlier post. It goes without saying that a narrower
grapple is cheaper too.
Dealers and even manufacturers (maybe excepting WRLong) don't always have much experience using grapples on CUTs so they tend to give pretty generic advice. If you have a big skidsteer then a big wide
grapple is probably appropriate especially if you are trying to clean up construction sites. The manufacturers generally rate the grapples for skidsteers in commercial use rather than for CUTs and IMO they underrate their smaller grapples. Even WRLong does that. For most CUT users however a smaller lighter
grapple is best. If your tractor has a 200lb standard bucket that doesn't break why do you need an 800lb high tensile steel
grapple?