Giantvac Leaf loader doesn't shred well, thoughts?

Discussion in 'Lawn Mowing' started by Classified, Sep 12, 2009.

  1. Classified

    Classified LawnSite Senior Member
    Messages: 988

    I have a 16hp briggs powered giantvac leaf truck loader. It does not shred the leafs that well. It might cut them in half and thats about it. I would have thought that these things really shred the leaves but it doesn't. The wheel is practically new so I don't think thats the issue.

    Anyone have this loader and have good results?
  2. mowerbrad

    mowerbrad LawnSite Fanatic
    Messages: 6,268

    I had a 20hp billy goat truck loader last year and it actually shredded the leaves very well. If I recall correctly, most truck loaders have a slightly different impeller design, some have "teeth" or an extra, smaller blade designed to chop. The main function of a truck loader is to just take debris from the ground and put it somewhere else. The secondary function is to shred the debris, some units do this better than others. Typically the newer units are better at this since they are being designed now to have better shredding capabilities.

    Here's what I would look into doing, to help remedy the problem:
    1) Make sure the unit is being ran at full throttle.
    2) Make sure the engine operates at the proper RPM's at full throttle.
    3) Make sure the impeller is on securely.

    If those don't work you might have to get a little more indepth into this:
    1) Try a different impeller, this could be either a different Giant Vac impeller or one of another brand that fits yours.
    2) Try and modify your current impeller to have "teeth" on it.

    Hope you get it working to your satisfaction, good luck.
  3. gene gls

    gene gls LawnSite Gold Member
    Messages: 3,213

    The drier the leaves the more they brake up going through the loader. If you really want small leaf particals try this. In the top part of the curved blower pipe going to the truck, drill and insert some #8 ,3/4" long self tapping screws, about 10 should work. Wet leaves shread very good, dry leaves turn to dust. Depending on how much you run through your loader will goveren how often you will need to replace the screws. I did this for several years with my 8 HP loader and 3/4 ton truck. It makes a lot of dust when they are dry.
  4. THC

    THC LawnSite Silver Member
    Messages: 2,020

    I think they only shred if the leaves are dry and brittle.. because then anything could shred them.
  5. P.Services

    P.Services LawnSite Fanatic
    Messages: 6,319

    i wouldnt dare touch the impeller!!! dont try to add teeth to it or change it in any way. that thing needs to be perfectly balanced.
  6. mowerbrad

    mowerbrad LawnSite Fanatic
    Messages: 6,268

    That should be the link to the little wonder site. Near the top of the page there is a picture and description of the "steel five-blade shredding talon ring". That is what I think you should see if you could add on.

    When I said modify the impeller to have teeth, I meant trying to add something like this on there, that would be at the center of the impeller as to not throw off the balance. If you put something at the end of the impeller, then you would see more bad then good.
  7. Classified

    Classified LawnSite Senior Member
    Messages: 988

    I wonder If I can just buy the talon impeller and put it on my giantvac.

    The problem isnt really a problem but the giant vac pulls so much air that the leaves just scream through the impeller once and are discharged. If they spent a little more time in the housing they would be nice and chopped up.
  8. brucec32

    brucec32 LawnSite Platinum Member
    Messages: 4,403

    I noticed this problem in videos from other manufacturers. It was clear the leaves coming out were not very shredded. For what they want for some of these things you think they would shred em better.
  9. LawnScapers of Dayton

    LawnScapers of Dayton LawnSite Silver Member
    Male, from Dayton, OH
    Messages: 2,572

    maybe run them thru 2-3 times.
  10. mowerbrad

    mowerbrad LawnSite Fanatic
    Messages: 6,268

    You can't be serious!? He would have to suck up the leaves, unload them, and then suck them up again...this all at one job. That would take forever just to do one job.

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