Jibber
Gold Member
- Joined
- Feb 22, 2003
- Messages
- 319
- Location
- RD-13, Putnam County, New York
- Tractor
- Kubota L3130HST 4WD, BX2350
Those "tabs" on the back edge of the blades provide lift. Just like an airplane wing. The foil, as it is actually referred to in the industry.. (air foil I guess) creates the vacuum that lifts the grass off the ground before it's cut. The more pronounced the foil, the higher the lift. You might want to make sure all of your blades look the same and they didn't mix up the set, which could cause problems.
I like a lot of lift in my blades early in the year when the grass is heavy and moist and tends to lay over. Later on.. in the mid summer.. I change to low lift blades because the grass is drier, lighter and easier to cut. Beside.. high lift blades when the soil gets dry can create a real dust storm.
as for alignment.. I agree that with a belt driven setup the blades are going to change orientation almost immediately.. if the manual doesn't say anything about putting them in a distinct relationship to each other.. then I wouldn't worry about it. At that high of RPM.. it's not going to make much difference. The only possible benefit I could see to a fixed orientation is for moving the cut grass to some discharge point.. and maybe in a mulching setup. But, I've never paid any attention to it and have never had any "streaking" problems.
I like a lot of lift in my blades early in the year when the grass is heavy and moist and tends to lay over. Later on.. in the mid summer.. I change to low lift blades because the grass is drier, lighter and easier to cut. Beside.. high lift blades when the soil gets dry can create a real dust storm.
as for alignment.. I agree that with a belt driven setup the blades are going to change orientation almost immediately.. if the manual doesn't say anything about putting them in a distinct relationship to each other.. then I wouldn't worry about it. At that high of RPM.. it's not going to make much difference. The only possible benefit I could see to a fixed orientation is for moving the cut grass to some discharge point.. and maybe in a mulching setup. But, I've never paid any attention to it and have never had any "streaking" problems.
