Seth; What are your intentions? I think the 6' blade would probably be ok for snow removal, and the weight won't be a problem, but it will be too much for aggresive dirt work.
Will
I intend to use it mainly for snow removal. I am looking at the 72" because I believe that with the blade at an adequate angle anything less will barely cover the width of the tractor. For other uses, I appreciate the limitations of the tractor.
Weight and width isn't the problem with the BX's, it's how high you want to lift the blade. I guess with modifications to the blade and/or the 3pt hitch lift arm brackets on the BX, you can get any blade to work.
For what it's worth, I have a 60" blade that, when angled, still covers the tracks of my B7500. I only angle it using the first hole, but that's all the angle I need to have the snow/dirt "flow" off the side of the blade. The attached pic shows the blade already angled - it's not angled alot, but, once again, that's all the angle that it needs to work fine.
Simple way to test if it's wide enough for your tractor is get a board five/six feet long and place it behind your tractor's rear wheels and see how much you can angle it before it stops covering your tire tracks.
Thanks for the input and the pix (worth another 7 posts). I ordered a KK RB-OT-72 (it has an offset and tilt), because I had to meet a delivery deadline. I noticed that the weight difference between the 60" and 72" in the KK line was only 20 lbs.
No - had a 5' snowblower on the front. The combination of the front blower and rear blade did an excellent job on my paved driveway.
I've since traded that front blower for a rear blower with Von (of TBN) because I put a snowplow on my truck this year, simply because I wanted to be able to clear the driveway more quickly.