since the thing double posted, I use the second post to say this,
on a lawn tractor, I would think that one would be limited to 100 max 200 pounds of lifting capacity,
and if the bucket is not keep very close to the front of the tractor your weight distribution will make the tractor very unstable when it is said and done you will be balancing the weight of the tractor, operator, and load. will be balance over the front axel,
(the loader most likely will easily be able to lift much more but will the tractor and balance allow one to lift more,)
If you thinking of moving earth, a cubic foot is about 100 pounds, so it could take 5 or 6 loads to fill a wheel barrow, I know the pictures of the buckets are way more capacity,
this is the specs off of the cad loader 507
CADLoaderLT Model 507 TECHNICAL SPECIFICATIONS
Loading Height 50 in. Hydraulic Pressure 700 psi
Lifting power at full height 200 lb. Number of cylinders required 2
Lifting power at partial elevation 300 lb. Weight (approx.) 300 lb.
Bucket roll-down angle at full height 40 degrees Digging depth below ground level 2 inches with bucket level
Hydraulic requirements 1 gal./min. - -
P.F. Engineering lists greater lifting power,
but when you put the load out in front, and the balance of the tractor most likely you will be the main counter weight, so you most likely will be able to lift about the same as what one weighs,
that is my two cents,
unless you have access to a lot of "free or very low cost" hydraulic cylinders and valves,
the bucket and lift, 4 cylinders you would have close to 400 in the valve 100 to 200, some kind of pump, 100, and then a tank, 50 to 100, if one uses surplus center as a part store, the hoses most likely another 200
and then the metal probably the lower cost portion of the plan, but new I would guess in the 200 to 300, for the bucket and the frame,
my guess is 700 in hydraulics on the low end, one will have close to 1000 in the project,
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I made a back hoe, I use all most 100% used iron, I thought I was doing good, then started pricing the hydraulics, I spent over 1500, and most likely closer to 2000 by the time I got all the fittings and hoses and it put together and yes it has been a good machine,
but I could have bought one on an auction that sold about the time I finished mine for less money than it took me to built it,
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seriously consider looking in a little heaver tractor and a manufactured loader, as a unit, if you have any plans for heavy work, out of it.
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one more thing, t mount your loader I would say it would take a nearly complete under frame, on that tractor you have from what I am seeing, thus if it uses a belly mower like most lawn tractors do no more mowing or a lot of work to switch between them, as adding the under frame would most likely keep the mower deck from hooking up or working
