Gravely 472 Demo

Discussion in 'Lawn Mowing Equipment' started by puppypaws, Jul 10, 2013.

  1. GMLC

    GMLC LawnSite Platinum Member
    Posts: 4,353

    5 carriage bolts. Thats it. Takes me 2 min. with a ratcheting wrench.
     
  2. Mickhippy

    Mickhippy LawnSite Platinum Member
    Posts: 4,199

    At the end of the day, its demoing in the worst conditions.... long wet grass!
    I know for a fact my SZ is absolute CR@P in that kind of stuff.
    You cant really get a genuine idea of how things are working in those kinds of conditions.

    Id just like to see a side by side cut on normal dry(ish) grass with a similar (stock) deck set up.
    Just get the baffles to the same height off the blade sail should give a pretty good indication of how things are working!
     
  3. puppypaws

    puppypaws LawnSite Fanatic
    Posts: 8,851

    I just got off the phone with the Gravely rep and was telling him GMLC (which he knows) seems to think the mower will do a much better job in my conditions with the baffle completely removed. He told me he had heard different information on how the baffle affected the cutting in wet conditions. He told me there were a number of these mowers being used in the Charleston, SC area, but they were cutting Bermuda and Zoysia really short, and the problem had not been mentioned.

    By the way, there is 14 lbs of air pressure in the rear tires, and has been from day one.

    He also made the statement that the 472 was handling 20" more cut width of grass than GMLC's 452, and this makes a great deal of difference as well.

    I have never changed anything about my 2006 XR-7 deck, the fusion blades have been sharpened once, and since that sharpening they have 38 hrs on them. I took it out late yesterday and mowed until dark, and the grass was extremely wet, and a heavy dew had fallen. There was no clumping, and the 28 efi (much smaller engine) powered the mower to what I considered an excellent cut.

    The hydraulics operated much, much, much more smoothly and easily than does the hydraulics of the Gravely. The Super Z is by far the smoothest operating mower of any on the market.

    I think you operate both the Gravely and Hustler Super Z, do you not find this to be the case, with the Super Z being virtually effortless to operate? I feel as though I need to drive the Gravely, whereas the Hustler seems to drive itself due to the effortless feeling in handling.

    My 72" Super Z is doing a by far better job of no clumping and a more even grass disbursal than the Gravely, as can be seen in the photos.
     
    Last edited: Jul 17, 2013
  4. mag360

    mag360 LawnSite Silver Member
    Posts: 2,446

    I can tell you that removing the baffles completely did help our 272 to discharge fewer clumps in wet conditions but the low sail blades still leave a lot to be desired. We ran it yesterday with the baffles back on and in the lowest position and the cut was crisper but it would lay clippings in the tire tracks of the previous row because the airflow was down low with the baffles. I'll set them to roughly level with the cutting edge of the blades when I next get the chance and expect this to yield the best results with the stock blades since this is how the pro stance deck is set up and it leaves an excellent finished product. The stock baffle setting is all the way up - I believe this is just the easiest way to set the machine up from a production standpoint since there's no need for the assembler to level them and they don't want to set them up all the way down because they will bend too easily if run by employees. It cuts the absolute worst in the stock setting.

    I also agree that the xr7 super z had the smoothest, most comfortable hydro feel. The zt5400's are better when you come off of top speed though as there is little to no freewheeling feel when you start slowing down. The hustler always felt a little sloppy - especially on the left (hustler informed us that this is simply a characteristic of the system and they all do this). The hyperdrive had a hydro lever feel similar to the gravely IMO.
     
  5. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Posts: 12,880

    Can you actually do this? I checked out Oregon's website when I looked up those blade part numbers I gave you a few days ago, and according to them, the blades of one of these two machines/deck size is a lot different in length than the other, but I don't recall which was the longer of the two.
     
  6. mag360

    mag360 LawnSite Silver Member
    Posts: 2,446

    Oops - I was assuming the same blade length but I know vx4 super z blades are 1/2 inch wider than many others including vx4 blades for the X1.
     
  7. GMLC

    GMLC LawnSite Platinum Member
    Posts: 4,353

    I have put over 200 hours on my XF2 since spring. I have used the baffles in every possible position, in every possible condition. In wet conditions take the baffles off, simple. Open up the deck to process the grass faster. You are choking the deck cutting tall wet grass. In semi wet to dry conditions you can adjust the baffles for your desired lift but in wet conditions especially tall grass you need to open the deck up like the scag velocity.
     
  8. mag360

    mag360 LawnSite Silver Member
    Posts: 2,446

    Ridin is right as per usual. Hustler blades are over 1/2 inch shorter and 1/2 inch wider. Strange that they would make a unique size 70-71 inch deck.

    Scag, exmark, and I'm sure many others use the same 24.5 inch length that gravely uses but without the drop down.
     
  9. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Posts: 12,880

    For some reason I can't get Oregon's site to work right now, so check on the Deere 72" blades if you can. I know they have the drop down/humped center like a Gravely, and look almost identical. I can't recall if I checked them the other night or not. They are 3"W x .250" thick, and come in high lift configuration, maybe they'd work out for you.
     
  10. mag360

    mag360 LawnSite Silver Member
    Posts: 2,446

    I think the low lift blades might leave this particular deck wanting some baffle. The discharge velocity is a little light and that seems to be more of a problem that the deck loading up. It feels like the xf1 we have running at about 3/4 throttle. I may have a chance to get under ours today and try the adjustment I think will help but the nest set of blades will be from scag. That's what I really expect to help.
     

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