Grass left uncut

Discussion in 'Mechanic and Repair' started by jminz, Apr 24, 2014.

  1. jminz

    jminz LawnSite Member
    Posts: 46

    I realized today that the new blades that I bought were thicker than what the manufacture recommends. Thicker means heavier, and I'm sure that was affecting my blade speed. New blades have been ordered, maybe this will remedy the problem.

    herler, what do mean did I take the deck out of transport position?

    As far as deck design, I have kept an eye on the underside of the deck. It cleans itself very nicely, so I now build up blocking is not an issue.
     
  2. unkownfl

    unkownfl LawnSite Gold Member
    Posts: 3,838

    If your mower is getting up to RPMS going to a lighter thinner blade is not going to change a thing. Move the blades closer to the ground by installing the shims on top of the blades.
     
  3. jminz

    jminz LawnSite Member
    Posts: 46

    But a heavier blade will take more power to get through heavier grass (power I don't have with a 19hp kawi). Is my logic flawed?
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  4. Breezmeister

    Breezmeister LawnSite Bronze Member
    Male, from South Jersey
    Posts: 1,488

    How often do you change your blades/sharpen them ? After 6 to 8 hours of use, time to sharpen them, or every day. There is only one reason that I find for heaver/thicker blades, that is if you are hitting stuff and bending the lighter/thinner blades.
     
  5. zspeed130

    zspeed130 LawnSite Member
    Posts: 219

    I tried a set of blades last year that were to thick. The results were horrible . They only lasted a day and I took them off. I agree it slows something down or affects cut somehow. Sharp, properly pitched blades and a dek pitched almost 1/2 in forward solved my problem almost entirely. Oh and my rpms need to be adjusted periodically.

    Z
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  6. leftyjoe

    leftyjoe LawnSite Member
    Posts: 153

    I have a 48 bobcat also and I know if I don't use offset blades I get the same results. Since Bunton and Bobcat are practically the same you may want to try offset blades. This will also get the blades closer to the ground increasing vacuum.
     
  7. jminz

    jminz LawnSite Member
    Posts: 46

    This might be it. After you saying that i realized the blades I bought were not offset. In addition to being too thick.
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  8. TheLugNutZ

    TheLugNutZ LawnSite Senior Member
    Posts: 410

    Good luck, I think you found your problem.
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  9. leftyjoe

    leftyjoe LawnSite Member
    Posts: 153

    I'd bet money on it. You wil lbe amazed at the difference the offset blades will make. I know i was.
     
  10. jminz

    jminz LawnSite Member
    Posts: 46

    My issues have been resolved for the most part. Between the fresh bobcat highlift blades and a thorough deck cleaning (it was really plastered and built up under the deck) it's cutting better. Still leaves the tall stringy grass to be double cut but does nicely on thicker blades of grass.
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