Double blades for 21"

Discussion in 'Lawn Mowing' started by FENNELL, Jan 20, 2001.


    FENNELL LawnSite Member
    Messages: 8

    Going to start this spring, already have a 21" Craftsman wondering if I can double blade this as well as the rider I end getting? Thanks in advance!
  2. Esby

    Esby LawnSite Senior Member
    Messages: 662

    I think I would stay away from putting double blades on that machine. I just dont think that it would have enough HP to do what you want, and will put unnecessary stain on the engine. With a large machine, and more HP you are able to do that.
  3. Eric ELM

    Eric ELM Husband, Father, Friend, Angel
    Messages: 4,830

    It depends on which rider you get. What are you going to get, a Dixie Chopper, Exmark, Toro, or equivalant? If so, you should have no problem. If your rider is the same brand as your 21", I wouldn't advise it.

    I wouldn't try to use doubles on a 21" unless you get the mulching blade that looks sort of like double blades. Most 21" has a 2 bolt or cradle type mount.
  4. I agree with Eric. I wouldn't put double blades on a 21" mower. I would be reluctant to put them on anything but a commercial grade mower.
  5. Mike Paulsen

    Mike Paulsen LawnSite Member
    from Idaho
    Messages: 99

    put doubles on my jd 21" last year. it cut the grass up a little more than the single. i had to set it up like a trac two razor. put spacers between the blades.
  6. linky

    linky LawnSite Member
    Messages: 151

    along time ago i tried the double set up on a 5hp 22. It would do a great job if the grass was short but if it were tall and the engine bogged down it took too long for it to pick back up. Too much time lost-the single works fine for a pusher.
  7. gusbuster

    gusbuster LawnSite Bronze Member
    Messages: 1,928

    I have used double blade system before, but it was under manufactures, spec. Honda's uses a double blade system when mulching.

    In 25 years of mowing grass, I have never seen a double blade system other than the honda. The little 5hp 6hp engines can't handle the extra blade. Plus, on just most 21" commercial models, they only have a 1/4" clearance from the bottom(rim) to the blade.
  8. jay

    jay LawnSite Member
    Messages: 133

    Gusbuster whats your Honda called with the double blade?
    Never seen one of those before.

Share This Page