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Hustler Super Z - problems with model

Discussion in 'General Industry Discussions' started by greenology, Oct 4, 2012.

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  1. GMLC

    GMLC LawnSite Platinum Member
    Posts: 4,353

    Good video's, thanks. Those are typical NH lawns. When people on LS say they mow above 10-12 mph I always think the lawns have to be smoother than ours.

    I would suggest demoing the new Gravely 400 series with air seat and rubber isolated platforms. In my opinion its the best riding machine in the industry and the only reason I can go 10 mph+ in NH. You wont be disapointed.
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  2. GMLC

    GMLC LawnSite Platinum Member
    Posts: 4,353

    Last edited: Oct 7, 2012
  3. greenology

    greenology LawnSite Senior Member
    Posts: 816

  4. Realslowww

    Realslowww LawnSite Bronze Member
    Posts: 1,527

    No I have heard the new Super rides bad stock, As stated the 400 series Gravely or Cheetah, my Supers are 15 MPH nice ride stock in most all conditions here. The old super in it's day was considered by most the best ride at the time without getting into suspension.

    A lighter z will always be more nible and agile,weight is your enemy overall.
  5. puppypaws

    puppypaws LawnSite Fanatic
    Posts: 8,915

    My friend, your problem is coming from a washboard property in this video, believe me this is not rocket science, anyone looking (as Mick did) at the mowers movement knows this property is extremely rough. The washboard affect would not come into play as much if the peaks and valleys were not so close together. Mow up and down (parallel) to the ridges your mower is bouncing across, and it will be totally different. When you watch the mower and see that the flex forks do not have time to activate properly because of the high and low places being so close together. This means no ztr will ride good in that scenario, a fully independent suspension such as the one Ferris uses will by far give the best ride in a situation of that type, but nothing will be great.

    Go into my post and find where I used a new IS3100 Ferris and compared it against my Super Z with the flex forks and flex seat. You will see where I talked about the washboard affect, such as you have in the video, and how the fully independent Ferris suspension does make a difference in this type situation.

    I own and operate a new 35/72 Super Z, and have one area I could make the mower do the same as yours in the video, so what that means to me is I know I must slow down for the mower and flex forks to operate as designed.

    I honestly can't believe you have not figured this out, and yes, I run both my Super Z mowers at full stick the largest majority of the time I'm cutting grass, but there are places such as in this video where I must slow down.
  6. Mickhippy

    Mickhippy LawnSite Platinum Member
    Posts: 4,251

    Only time I have issues with movement is on this lawn... http://youtu.be/XjR5pDmJHXY You can tell by the camera shake how rough this place is and Im going very slowly. Millions of ant nests!
    I can rarely sit back in the chair on any lawn. Maybe Ive just learnt how to move with the motion!!! lol

    Try adjusting the back rest for more angle away from your back.

    Im not really sure whats involved with taking the springs off. I personally wouldnt do it. Id adjust what ever I could before going down that road and theres a reason for them. That said, I would assume taking them off would be a real pain. No doubt it would mess up the deck level etc so is something I would get the dealer to look at. Levelling an SZ deck is no fun at all!
  7. TLS

    TLS LawnSite Fanatic
    Posts: 7,940


    I've never videotaped myself or others mowing before, so I don't know how I or others look while mowing.

    I watched all of your videos...

    That being said, your culprit is that when you bounce (or your lady), your bouncing your arms and jerking the sticks back and forth. This is then jerking the machine more and then your hit the next bump and jerking it back. If you were to ViseGrip the levers still (do NOT try this, but imagine it) your ride would be smoother.

    I drove your exact machine on two separate occasions, about a year apart. Both demo periods were multiple day. Go back and search under my username. The first demo, it was brand new....never cut a blade of grass. It had standard forks and those same run-flats that all the new ones did.

    My main complaint was the stiff riding run-flats.

    The next season, I demo'd it again. This time the dealer installed a set of flex forks. It was a totally different machine. Rode great. Way better than my older rigid forked, air tired, flex seat XR-7 SuperZ.

    I did notice the absence of the flex seat that I was so used to, but I was able to go faster and ride smoother with this new machine with flex forks.

    Couple of things...

    Both demo periods, the mowers came to me with 20psi in the rear tires (which may be what is posted on the sidewall of the tire). Both times I aired them down to 10psi, as 8-10 is the Hustler recommended pressure.

    As for the deck bounce...

    Hustler re-engineered the geometry of the lift mechanism on this new SuperZ. They lift a LOT easier then the older models did. This new deck is heavy, and to counter that they made the springs do a lot of the work. You look to be cutting low (under 3"). I would re-adjust the spring tension as at your lower cutting heights, the spring is almost FULLY compressed and giving you almost all it's upward pushing power. Loosen them up to where your comfortable with the leg pressure needed and the bounce to almost go away.

    And lastly... slow down! Or get some smoother lawns. I'd bet that if your other mowers could do 15mph, that you'd ride just as rough!

    Any other mower with similar wheelbase and 1.5"x3" frame rails will ride exactly the same. Your rear suspension is your rear tires after all.
  8. Realslowww

    Realslowww LawnSite Bronze Member
    Posts: 1,527

    He claims even going slower his older mowers run smoother.
  9. Realslowww

    Realslowww LawnSite Bronze Member
    Posts: 1,527

    TLS I know the newer mower is a good bit better but how much do you think a BB engine would help the older XR7 Z's. I tried a 60 XR7 with a 31 850 and the hydros responsiveness worked alot better from a small ride.

    What do you like about the older model compared to the new one or vice versa because a guy locally complained to me about the new Super as well but it was stock ?, he traded his XR7 on it and said it was a mistake because of the deck chatter like in the video.
  10. TLS

    TLS LawnSite Fanatic
    Posts: 7,940

    There is nothing special about a SuperZ that makes them ride rough. A frame is a frame, and tires and in his case, flex forks are the suspension.
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