newbury
Super Star Member
- Joined
- Jan 8, 2009
- Messages
- 14,122
- Location
- From Vt, in Va, retiring to MS
- Tractor
- Kubota's - B7610, M4700
I have become beset with grapple envy.
I've tried to follow the "how big" and read some like it small, others like it big.
and
leads me to think whatever works is ok.
I've a B7610 (1367 lbs) w/ a 60" bucket that may weigh 2k lbs w/o anything on the 3 pt and my M4700 (4,000 lbs) which probably is about 6K+ w/ loaded tires & 72" FEL.
So - since I'm not making $$$ off it and have to s-t-r-e-t-c-h my limited retirement $$ I'm thinking one 60" to share between both tractors. I've already got plenty of places the big boy doesn't fit, and logs the little one can't lift. MOST of my grappling fun will be limbs and such but their may be some nudging of stumps and roots with the M4700.
So for you grapple-holics - does this seem feasible? Big ballast on the 7610 and QA fittings for both of course.
Any advice appreciated.
I've tried to follow the "how big" and read some like it small, others like it big.
(How did he get a 9500lb tractor? tractordata.com lists it at 5500 lbs, do loaded tires, cab and FEL add 4k lbs?)This is why the 72" is such a good fit for larger tractors. It wouldve been difficult carrying the stump mainly but it was nice having the width for the long logs also. The stump was enough to get my 9500lb+ tractor light in the rear. The BB is only about 1k and I have loaded rears.
Brett
<snip the pic>
How about a rule of thumb of one inch of grapple width for every 100 pounds of tractor and ballast?
and
Rules of thumb are meant to be broken. While one inch of grapple per 100lbs of tractor might make a lot of sense when limiting your grappling tasks to moving brush, grappling duties that include digging stumps and rocks out of the ground would dictate a narrower grapple as optimal so perhaps 1" per 150-200lbs of tractor.
There is no rule or rationale for having a grapple the same width as a standard bucket. If the main task is picking up construction debris (as for most skidsteer grapple use) then wider is better. If digging or lifting heavy objects is the goal then a narrower lighter grapple makes more sense. It's easy to see why folks automatically assume that a grapple should be the same as their bucket but it really doesn't work that way in practice. More powerful tractors do not "need" wider grapples. Think of an excavator. They rarely have grapples more than three feet wide because they are not picking up light scattered debris but rather ripping out stumps and boulders. Sometimes smaller is better regardless of tractor weight/size/hp.
leads me to think whatever works is ok.
I've a B7610 (1367 lbs) w/ a 60" bucket that may weigh 2k lbs w/o anything on the 3 pt and my M4700 (4,000 lbs) which probably is about 6K+ w/ loaded tires & 72" FEL.
So - since I'm not making $$$ off it and have to s-t-r-e-t-c-h my limited retirement $$ I'm thinking one 60" to share between both tractors. I've already got plenty of places the big boy doesn't fit, and logs the little one can't lift. MOST of my grappling fun will be limbs and such but their may be some nudging of stumps and roots with the M4700.
So for you grapple-holics - does this seem feasible? Big ballast on the 7610 and QA fittings for both of course.
Any advice appreciated.