Leaf box vent

Discussion in 'Lawn Mowing' started by cos, Dec 31, 2002.

  1. cos

    cos LawnSite Addict
    Posts: 1,253

    Where would you say that it should be? Front, back, sides, middle?

    I cut it out in the top back. I didn't want all the leaves sticking to it after being blown to the front of the truck.
     
  2. mdb landscaping

    mdb landscaping LawnSite Silver Member
    Posts: 2,205

    i put mine in the roof of my box. works really good.
     
  3. ksland

    ksland LawnSite Senior Member
    Posts: 927

    Cover the whole top with a mesh tarp. My 16hp loader almost never clogs, and it packs it full nicely right to the top. Best thing, it just unhooks. I will post a pic of mine in a bit
     
  4. Tvov

    Tvov LawnSite Bronze Member
    from CT
    Posts: 1,157

    We have two 8"x16" rectangular vents on each side near the top. On our next leaf box we will probably have a roof vent above were the leaf vacuum blows into the box.
     
  5. ksland

    ksland LawnSite Senior Member
    Posts: 927

    Here is mine

    dsc00445.jpg
     
  6. mmacsek

    mmacsek LawnSite Senior Member
    Posts: 543

    I like the idea of the tarp. My leaf box has the back half (top) with fine screen. I use a 16 h.p. Lesco loader on the back of my pickup truck. Where do you buy these mesh tarps? Matt
     
  7. cos

    cos LawnSite Addict
    Posts: 1,253

    Very nice set ups! Is there any rhyme or reason as to the placement of the vent hole? When building mine, I thought of blow out and clogging of the vent. I put mine on the top of the solid plywood roof at the back of the truck. I heard those mesh tarps work very good!
     
  8. mdb landscaping

    mdb landscaping LawnSite Silver Member
    Posts: 2,205

    so far i havent had any problem as to the position of my vent. I have the right amount of vent to allow for air to blow out properly, and i dont get a out.lot of debris that blows. the tarps are a good solution, but i wanted a nice sturdy box that comes off in one piece and will last for years to come. Just my preference though. If you are going to make a collapsable box the mesh would be the way to go.
     
  9. GroundKprs

    GroundKprs LawnSite Bronze Member
    Posts: 1,969

    Haven't done but one leaf box, and just built mine this year on input from others who have used them for years. One frequently mentioned problem was blowout of dust through the vent, and therefore vent should be located away from engine.

    Mine is the 16 hp Briggs, so it's pushing 3200 CFM. Let's assume that is the unit we will use to compare venting. Comparing the two rigs pictured above, the speed of the air going through mdb's 1/4 roof vent will be 4 times the speed of the air going through ksland's full top vent (with fabric). The faster flow in the smaller vent will cause more dust, and be more susceptable to plugging up. Of course these conditions will also vary with the type of material used in the vent. But, the larger the venting area, the lower the speed of the air rushing out of the vent.

    Perhaps there may be some advantage in a smaller vent causing better compaction of debris? Mine is pictured below, and I accomplished at least a 6:1 compaction ratio for those jobs I measured.

    I only made front and back solid, front to keep dust away from engine and back because vac really blasts the debris at back door. Have had wet leaf vacing cause a 4" deep buildup of debris on door, LOL. Both sides of leaf extension are fabric, as well as the full top. My trailer has almost twice the venting as ksland's full top vent, and I have full view of how the load is filling. Only get a little dust when it is almost packed full.
     
  10. GroundKprs

    GroundKprs LawnSite Bronze Member
    Posts: 1,969

    Duuhhhh, the pic:

    side view.jpg
     

Share This Page