fwa vs twd

Depends on soil conditions

More Acres per hour usually calculates to better fuel efficiency

Allis dave wrote: Better fuel economy because all the power goes to the ground instead of lost to slippage.

An 8070 is 3000lbs heavier than a 8030. I think a big part of the sales argument was that the 8070FWA cost less than the 4WD tractor and could do almost the same job. It should do almost the same as they're the same HP. Now we're back to Allis old sales pitch of pulling smaller implements faster. Depends on what you're really doing for hard tillage I suppose.

I'm a big 4WD fan though. They float so much better and have so much more pull to get through wet spots and all that weight and stability is nice on a grain cart too.

But now we're digressing from the original question...

Allis dave wrote: An 8070 is 3000lbs heavier than a 8030. I think a big part of the sales argument was that the 8070FWA cost less than the 4WD tractor and could do almost the same job. It should do almost the same as they're the same HP. Now we're back to Allis old sales pitch of pulling smaller implements faster. Depends on what you're really doing for hard tillage I suppose. I'm a big 4WD fan though. They float so much better and have so much more pull to get through wet spots and all that weight and stability is nice on a grain cart too. But now we're digressing from the original question...

True but my 8030 has radial 20.8's that are loaded and the 7580 has empty 18.4's bias tires.   We have a J&M 875 grain cart I can put 2/3 of a load in it and the 7580 will drag it places I would be afraid to drive a 4wd pick up.

thanks for all replies but still wonder if one could get same work done on same amount of fuel using a two wheel tractor w radial duals in ideal conditions pulling a much smaller implement ? . no question that fwd always better!! . p.s. my dad let me skip school the day they demo'd 6000/8000 fwd they pulled a big disk w 8050 flipped switch on amazed everyone , almost converted the landowner from red to orange,also remember at one point that big disc was hooked to 6080 fwa to move to another field we put it in the ground just for fun and it blew everyone away that it could pull it no prblem

I think the figures for the FWA are the Gallons per Hour figure is higher due to the reduced efficiency due to drag in the drivetrain, but the Gallons per Acre figure is more efficient due to the increased traction.

We either own 4wds or 2wds, only if they can be bought cheap will we own FWAs, they are nice for some applications, but IMO the high cost of repairs offset any gain for us.