Double Blades

Discussion in 'Lawn Mowing' started by packerbacker, Feb 25, 2004.

  1. packerbacker

    packerbacker LawnSite Bronze Member
    Messages: 1,433

    Just wanted to know how many people mowed with double blades. Also I have a 14 HP Kaw on my 48, would that hinder the speed at all or make the motor work harder?
  2. TreffertLawnWrx

    TreffertLawnWrx LawnSite Senior Member
    Messages: 277

    I just starteed runnning doubles mid-season last year. I noticed a huge difference in discharge as well as sound. I'm sure it will take a little more to run doubles but you will probably only notice it in heavy or wet grass.
  3. imograss

    imograss LawnSite Senior Member
    Messages: 796

    I run doubles on my Super Z.

    superz blowout baffles.jpg
  4. Gabriel Turf

    Gabriel Turf LawnSite Member
    Messages: 72

    The motor will work harder and your mower may sound like a helicopter but you will be so impressed with the fine clippings and not having to double mow that it will be well worth it.
  5. kenslandscaping

    kenslandscaping LawnSite Member
    Messages: 16

    Just kinda curious how you bolt those both up, is there a bracket or a weld, or do you just line them up and tighten away and allow friction between the blades to keep them together?

    Just wondering.

  6. imograss

    imograss LawnSite Senior Member
    Messages: 796

    I use a carpenters speed square to make sure they are at a 90 degree angle. Then I tighten with an impact wrench. I am able to use the stock bolt.
  7. greendave

    greendave LawnSite Member
    Messages: 219

    What effect does it have on a deck with a mulch kit on it? Should I remove the mulch kit and discharge? How does wet grass effect things? I noticed in the picture the top blade is a mulcher, and the bottom blade is a hi lift. Does that give the best results?
  8. FrankenScagMachines

    FrankenScagMachines LawnSite Platinum Member
    from IN
    Messages: 4,739

    Greendave, I believe several people use doubles with a mulch kit but I do not have a mulch kit so I don’t know how it works. Obviously it works well or they would not do it eh?
    I discharge with doubles much of the time, they give supreme results over any other single blade discharging. I run a standard lift blade with a gator type like in the picture and I find that to work best for me, it has good suction but not too much (too much airflow can disturb good cut quality) and it gives a clean cut and chops up the clippings nicely and discharges them very well, plus the gator types take very little extra horsepower, whereas double lift blades can take a bit more power to turn. I use a 52” eXmark Turf Tracer HP hydro walk behind with a ProSlide sulky, 17hp V twin Kawasaki and I have enough power- most of the time It’s plenty of power but in thick juicy tall lawns I have to slow down a little, most of the time I run full speed on the lawns though. Double blades handle wet grass exceptionally well! They will amaze you in tall wet conditions! The gator mulchers on top also produce much less noise than double lifts but they are noiser than single standard blades.

    Ken, I just bolt them together like Tim said.

    Packerbacker- 14hp/48” is fine for doubles IMO. I used to run a 14hp 52” hydro Scag with doubles and a sulky it did ok but it would bog in taller areas but it was worth it not having to double cut saves time and you are saving the wear of driving over the lawn again too.
  9. topher924

    topher924 LawnSite Member
    Messages: 109

  10. Dan the mowing man

    Dan the mowing man LawnSite Member
    Messages: 48

    So there is no special application for double blading just line them up and tighten up well ? Can this be done on ztr as well .

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