JWR
Elite Member
- Joined
- Apr 19, 2011
- Messages
- 3,997
- Location
- So MD / WV
- Tractor
- MF 2660 LP, 3 Kubota B2150, Kubota BX2200, MH Pacer, Gravely 5660, etc.
WAY to much! Way, way, way to much. You need a 5' cutter.
Initially, your tractor will not lift it.
Secondarily, you need twice or three times the power of your 3901 to do anything other than play mowing with a 7' rotary cutter.
I've been using rotary cutters of various size with various tractors for nearly 50 years. Currently, (among others) I use a Woods BB840X (7') HD cutter with a Kubota M9960HDC12. The 9960 is rated 89 PTO HP, yet, I cannot not pull it as fast (about 5/5.5 MPH) as the mower will cleanly cut that which I was cutting in low range, sixth gear.
FWIW: Grass cuts MUCH harder than does weeds, regardless of weed height.
SDT
I'm not quite as hard-over as SDT but I agree; the 7ft hog is just not going to be comfortable with your 35-37hp tractor. Lifting it will be marginal at best. Tom Seller is quite right that it makes a big difference what you are cutting but overall -- just the wrong tool. I'm confident you can handle a 6ft hog, not a 7 footer. There is a lot more difference in both weight and required power than people realize. I don't agree that you need to back off to a 5ft cutter. I run a 5ft cutter on my B2150 Kubota -- with very reasonable ease -- that is only rated at 24hp. You can handle a 6ft very well.