KRAIG - Thanks for posting those pic's for Marlin. I didn't remember I had that extra pair of white donut-shaped weights on the inside of the wheels at that PD. That's 90# plus the hardware on each wheel for all three weights. The outside solid weights are something I bought at a farm auction back in about 1970 for $5 for the pair. I have no idea what they were off of (it wasn't a JD!) but they were on the hayrack and had NO paint at all on them, no part number or foundry logo, the carriage bolts to mount them to the 70 and the can of spray paint cost more than I paid for the weights. The yellow pair next to the wheel on the inside are IH CC 26# weights, and the white inside pair I think are off a Sears or Mont.Ward tractor and weigh 22#/ea.
I'll get some pic's this weekend with some detail and something to scale some dimensions of the hitch, the axle brackets, the lift links & the rockshaft arms. The ONE thing I would do different is to shorten the arms that go on the rockshaft. They're shackel extensions I bought to put on a '77 Firebird I needed to raise the rearend after the leaf springs sagged in about '80 but I never got them on. I would cut them off an inch or two and use the hole right above where the lift links are pinned now, which would require moving the arms they pin to on the "U" shaped hitch in back farther forward or make those arms shorter.
I may even make the pic's "FANCY" like Richard C. Use cardboard for a background!
Oh, one more thing.....There's no "Blue-prints". I Never use blue-prints when I make stuff. WAY too hard to hold the tolerances shown in the title block. The tape measure I used to take all the measurements did have a current calibration sticker on it and was tracable back to NIST Standards. Not sure if We have any QA people on the forum but My last three employers were all ISO 9001 certfied. And I was a "Qualified Supplier" at My employer before those three....mostly to rework bad parts from a "Certified Supplier".
Wyatt studied that hitch quite a bit and He liked the way it pulls off the axle carriers and spreads the stress out over a lot larger area of the rearend than the factory IH hitch which just pulls off the three capscrews at the bottom of the rear cover. That's the same way the rear drawbars on MILLIONS of FARMALL's was made.
I'm not too proud of the appearance of some of the welds on the "U" shaped hitch but I remember I was running out of "Scrap" and wanted to hook the plow up and......
But all the welding was done with a 40-50 yr old AC Buzzbox welder. I started making another hitch several years ago for the 129, got the axle brackets done and cut most of the steel for the hitch but never got any farther than that. Seems like something needed to be repaired AGAIN on a Hot-Rod red Ford Lightning.....like the rearend Again.