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Rocky..... ...ya ask a bunch a "technical questions" for what reason? Ya plannin' on re-inventing the wheel ...er... hydraulic lift? I don't know what the hydraulic cylinder bore and stroke is. The I&T FO-4 lists the scotch-yoke pump at 2.85-gpms and the corner pressure test port at 1500-1700psi at 1500rpms. The N-Owners manual lists the hydraulic pump at 2.15-gpms at 1500rpms and 2.85-gpms at 2000rpms. It only list hydraulic pressure specs 1500psi min. Most well used N-Tractors gitt-by on about 2-gpm and less than 1500psi. The 3-point 11-hole drawbar lift ranges from 8-1/2 to 34-1/4 and 18 is standard operating height. The other 3-point specification you should be aware of is the 11-hole drawbar is 26" between 7/8" pins. The top-link is a 26" vertical-"T"-distance from the ll-hole drawbar with 3/4" pins. As as good rule of thumb the hydraulic lift capacity is about 800# before the frontwheels start flappin' in the breeze because of the SHORT wheelbase. Iff'n you chained the front wheels down so they couldn't lift, then the rear lift arms can lift about 1200# before the internal safety valve pops-off. This why you can't carry roundbail hay on a 3-point spear, too heavy..... ..HTH, Dell
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