<font color="blue"> 770 is at the bucket pivot point so you have to come out the depth of the bucket and then the length of the forks what ever that figures to be but certainly less than the 300 expected. </font>
I don't know but I would not bet that it would be less than the "300 expected."
First of all, the average load would not be 20" out. That is the distance to the tips of the tines. The average weight would likely be around 10" or less forward of the bucket lip, depending on how much was in the bucket.
The otther thing to consider is the pivot point of the loader arms and its relationship to the specs given for the loader, and the points on the loader arms where the lift cylinders exert their upward force.
If I remember right, two specs that are commonly given are lift capability at the bucket pivot point and the bucket center. I believe both of these specs are related to the pivot point of the loader arms. So going out say 20" beyond the bucket center would not necessarily mean the load capability of the loader would be halved if that was the point where a load was hung from.
Too bad there is not one more spec given, lift capability say 24" beyond the bucket center (sort of like a 3PH). The we could take a back door approach and figure out a relationship without thinking too much... /forums/images/graemlins/crazy.gif
I do get the feeling that my pallet forks can lift more than say half my loader's rating, but I have never measured it...
Well, maybe I have in a way. I had six 16' wet pressure treated 6x6's on my palet forks, close to the bucket, and could lift them with no problem...except that I did not have my back blade on, and the rear end of the tractor wanted to leave the ground...even with loaded tires.
Attached is a photo. No doubt in my mind six of these 16' 6x6 weigh a total of at least 900 lbs. The were on the wet side. I was able to lift this with my LA402 loader, rated at something under 1,000 lbs. And all the load is beyond the front of the bucket lip...