Posted 12/22/2014 20:56 (#4258614 - in reply to #4258495) Subject: RE: Allis Chalmer 333 planter
The 333 was a frame only, and could have had several units. The 76, 77, 78, and 79 all used electric motors to provide air to meter seed, which was as good as anything at that time. The differences were the type of chain, and the style of openers. All were unit drive from a single press wheel. The Quada Disc addressed that, and would be in the game today.