3 point will have more lifting power.
Possibly on larger tractors, you would be correct, but not with GTs.
The typical 3PH lift cylinder has a 2" bore and a 4" stroke, and a GTs hydraulic system runs at 950 psi max, unless shimmed aftermarket. This gives it a maximum force potential of 2985 lb when extending. Unlike the larger tractors, most 3PH lift cylinders in GTs lift by pulling which will entail the loss of the cross sectional area of the rod for the area that pressure is applied. With a leverage of approximately 4:1 (cylinder stroke to 3PH arm lift distance, even extending will only result in 746 lb of lifting force. Even if the rod is only 3/4" in diameter, that will result in 14% less lifting power when retracting, or 104 lb less, before geometry comes into play. The geometry can further reduce the actual lifting force by 30% or more, or 193 lb. Max lift at the ends of the arms is thus reduced to as low as 449 lb to get maximum stroke for lifting with the 3 PH.
Heavy GT rear axles are rated for a maximum of 500 lb of weight behind the rear axle, usually an implement (tiller, snow blower, or ballast box)) on the 3PH.
A 3PH will not lift the front wheels of a heavy GT off the ground, but any FEL will usually lift the back wheels and the operator of a heavy GT off of the ground, and usually including liquid ballast and wheel weights, at 950 psi.
There is a reason why my GT w/ FEL carried a minimum
of 400 lb of ballast. Normal ballast load was 650 lb, and it has carried as much as 865 lb, and still lifted the back wheels off the ground. That's over one ton
of lift capability at 1500 psi available for pulling fence posts.
Beats the heck out of 449 lb, and has a 72" stroke besides.
The reason my loader hydraulics has a relief setting of 1500 psi is that it also supports my log splitter.
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Sometimes you get on a roll, sometimes the roll gets on you.
MF GC2310, Husqvarna YTH20B42T
Down for Repairs
MF1655 w/ FEL, MF1655, MF12H, MF8H, MF7H
Spending too much time on MTF to work on my toys.