New Husqvarna PZ Commercial Midmount Z

Discussion in 'Lawn Mowing' started by JimQ, Sep 3, 2009.

  1. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    I told Jim Q about these two things when the deck was prototyped...

    These angle corners SUCK on a mower deck... /.........\

    Lots of grass and weed types with stems avoid the deck period...
    If they are tall enough to make good contact with the deck skirt...
    Those angles part it like a comb and they will get missed.
    So you have mow hawk stringers between the passes...
    Or you accept excessive overlaps to avoid them.

    The eXmark was like this and it drove me nuts.

    Put corners on fabricated decks or have them round, not 45 degree angles and such.

    Deck Underside-2.jpg

    Left-4.jpg

    Right-2.jpg
     
  2. Leaf Jockey

    Leaf Jockey LawnSite Senior Member
    Posts: 360

    Anything else you would change?
     
  3. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    The next thing is... get rid of these pulley covers from before most of you were born.

    They are a pain in the arse to deal with.
    Traps a lot of crap, and they are a heifer to remove for service.

    And not only that, but you can save all that material, plus the bar stock...
    And avoid all those dang detrimental welds that stress the deck shell.
    You can get by with the lesser grade used and it will have a better chance of being straight.
    Put the material costs into higher grade, and/or bolt on spindle reinforcement rings.

    Left-5.jpg

    Deck top-2.jpg
     
  4. Leaf Jockey

    Leaf Jockey LawnSite Senior Member
    Posts: 360

    I'm pretty sure that bar stock adds some strength where strength is needed on top of a deck. The saftey the belt covers offer is more important than any inconvenience. Its not too often a person needs to take them off.

    Scott
     
  5. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    And toss those black plague link rods for some turnbuckles, threaded rod, and nuts...

    Remember how these just rainbow under the weight of the deck due to how they are made and how the deck weight is carried?

    As you can see from my right one, it couldn't carry the weight of the old 10 gauge 48" deck... much less those new ones in bigger sizes.

    Left-3.jpg

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  6. 1wezil

    1wezil LawnSite Senior Member
    from tn
    Posts: 535

  7. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    And lastly, do something with the finish...

    That mower is too new to have big hunks like that missing...

    Left-1.jpg
     
  8. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    It causes more MFG problems than it adds strength...
    The heat and stresses of welding on a large sheet like that are not ideal.
    Hard to keep the deck top flat and straight....

    There are just better and probably cheaper ways to do both things...
    Reinforcement and pulley covers...

    Double tops... reinforcing rings... and bolting a lot together instead of welding...

    I like these pulley covers... they sit on two bars like { so they don't trap anything, blow out from all angles... and detach by 2 rubber handles for service.

    8 12 lf z2.jpg
     
  9. Leaf Jockey

    Leaf Jockey LawnSite Senior Member
    Posts: 360

    Do you really believe those decks aren't straight because they welded on the top of them?

    Scott
     
  10. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Posts: 11,062

    Talking past tense... yes, many of them came out of the fixtures, and then warped from it. The way it was explained to me by a fabricator is that the potential was there from just the act of welding, and the technique, and also the grade of the material being welded.

    I'm no metal guy, and don't have that skill set like I wish I did.
    But I do know it happened to them.

    I know because I never owned a straight one back in the day, and ran into many more that had this issue too.


    I'm not saying these are going to be the same way... variables could have changed.
    I'm just stating that there is a better mousetrap on that part of the fabrication...
    And it would lessen the possibilities...
     

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