blade pitch

Discussion in 'Lawn Mowing' started by Greenery, Jun 30, 2007.

  1. Greenery

    Greenery LawnSite Senior Member
    Posts: 512

    how much blade pitch is to much? any oppinions
     
  2. Runner

    Runner LawnSite Fanatic
    Posts: 13,494

    Anything over 1/4 of an inch.
     
  3. Richard Martin

    Richard Martin LawnSite Fanatic
    Posts: 14,700

    I've heard that 1/4" number a whole lot but I really think it depends on the deck. I have a lot of pitch (1/2"+) on my Dixie and I don't have any problems with strips of uncut grass or any of those other problems that some Dixie owners seem to have. Zero complaints from customers.
     
  4. DLCS

    DLCS LawnSite Platinum Member
    Posts: 4,380

    I run 3/8" on my 7 iron decks.
     
  5. mowtech

    mowtech LawnSite Senior Member
    Posts: 252

    It really depends on your height of cut. As you pitch the deck forward the center of the blade path will be lower than the sides and therefore will cut lower. The lower the height of cut, the more this variation in height will be noticeable. So at low heights of cut, 1/4 inch maximum pitch will give you an 1/8 inch variation in cut which will not be noticeable, but if you go more, it will be. At higher heights of cut you can increase the pitch considerably with out this variation be noticeable. Why more pitch? Generally the more you pitch the deck, the less power is consumed.
     
  6. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    Just depends on the deck you have and your average cutting height.
     
  7. causalitist

    causalitist LawnSite Senior Member
    Posts: 610

    call me an idiot, but my guess is u guys usually have the front higher than the back? is that typical? thats what i have on my turbo force and it works ok ... just making sure im not doing the opposite of everyone else since pitch isnt something i have paid much notice to.
     
  8. Richard Martin

    Richard Martin LawnSite Fanatic
    Posts: 14,700

    Yup, you're an idiot.:laugh: The front is always lower than the back.
     
  9. mowtech

    mowtech LawnSite Senior Member
    Posts: 252


    You want the deck pitched forward (front lower than the back). The purpose of this pitch is to keep the blades from cutting the blades of grass more than once. If the deck front is higher than the back, the blade will cut the grass at the higher front height and then re-cut that same grass again at the lower rear height. This multiple cutting is inefficient and wastes power. That's the whole idea of pitching the deck--prevent double cutting. Now if you are mulching and are trying to chop up the grass anyway, it doesn't matter quite as much.
     
  10. Runner

    Runner LawnSite Fanatic
    Posts: 13,494

    Richard,
    How ca you possibly have that much difference and not have it noticeable? I know that in our cool season grasses up here, it sure would be. There would be discolorations at ties, as well. At 1/2", there would be a 1/4" difference from the front of the blade stroke, to the side of the blade stroke. Kind of like ~~~.
     

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