I use my CUT too, although there has been little to do since the road company graded and rolled it(the driveway, not the CUT [img]/forums/images/icons/smirk.gif[/img] )
I would like to eventually get a belly blade for my Farmall-A. I think it would do a better job and the scraper or a blade on a CUT. Here is my theory:
A belly blade would be more like the blade on a grader. It is in the middle, where a rise in elevation by the front or rear of the tractor is minimal.
Compare this rise to having the front of a CUT go over a bump; the front rises, and pivots the scraper/blade at the rear tire center point. Since the scraper/blade hangs off the back of the CUT some distance, the overall affect on the height setting of the scraper is greatly affected.
With a belly blade in the center of the tractor, if the front end moves up say four inches, the blade at the center point would only move up 2".
The blade on the back of a CUT would be opposite. If the front tire rises 4", the tractor kinda pivots on the back tire , and the rear blade wants to gouge in 4"(not totally, since most of us do not have down pressure).
Now, it would be hard to put a belly blade on a CUT. My B8200 Kubota sits too low, even with it's 4wd. That's the beauty of the hi-crop/cultivating tractors like a Farmall-A or Allis-B, they sit up enough to get a blade under there.
Of note though, my Farmall-A is one of the 1940's CUT's. It's the same size as my compact Kubota(length/width), hp wise, and was quite the utility tractor in its heyday. Seems many are still used that was still. I guess it's just a tall CUT [img]/forums/images/icons/wink.gif[/img]