Running Doubles

Discussion in 'Lawn Mowing' started by blublazes, Oct 9, 2005.

  1. blublazes

    blublazes LawnSite Member
    Messages: 63

    Hey guys, I know leaf season is coming up quickly. I just have a quick question. I have a Grasshopper midmount and I tried putting doubles on it, I was using gator mulchers and factory hi lifts, when i went to engage the clutch, it completely shut the mower down. Anybody have any idea what might be wrong, could they possibly be hitting each other? Anybody with a grasshopper run doubles? Any and all help is greatly appreciated, thanks. Paul
  2. PTP

    PTP LawnSite Bronze Member
    from Tulsa
    Messages: 1,399

    If you are engaging the blades at a low RPM, that is the problem. The engine is not making enough HP to get all that weight up to speed that quickly.

    Try using a higher RPM.
  3. PTP

    PTP LawnSite Bronze Member
    from Tulsa
    Messages: 1,399

    Just thought of this. Are the grasshopper blades timed? Do they interfere with each other if they are not set right? If this is the case then they very well may be hitting each other and shutting everything down.
  4. white_boyz1

    white_boyz1 LawnSite Member
    Messages: 3

    I Have A Grasshopper 718k Front Mount .i Use Doubles And Have The Same Problem A Low Idle Its A Lot Of Weight.try A Higher Rpm It Needs It.
  5. Brianslawn

    Brianslawn LawnSite Silver Member
    Messages: 2,002

    thats way too much weight and drag for the 18hp engine. just run gators. you prob. can get doubles going with higher rpm, but youll kill your engine a lot quicker.
  6. blublazes

    blublazes LawnSite Member
    Messages: 63

    I dont know if the blades are timed or not, every time i put regular blades on i never set them just right, i just bolt them back on and tighten them down. It has been a while since I tried the doubles, but it seems like i had the rpms on up there when i tried it, maybe not though. I guess I will do some experimenting this weekend. Thanks. -Paul
  7. exmark72

    exmark72 LawnSite Member
    Messages: 123

    if the engine isnt warmed up enough it will die from all the weight
  8. wowlawncare

    wowlawncare LawnSite Member
    from TN
    Messages: 62

    Yes you need to get it warm and keep your rpm higher. Its turning alot of extra weight. One thing you might try is a lighter blade or one without as much lift. So that its not pushing as much wind. But you will love your double blade cut.
  9. Mark McC

    Mark McC LawnSite Bronze Member
    Messages: 1,565

    I have the low lift blades for my eXmark Metro 36 and TTHP 52/19 for spring cutting and the notched high-lift blades for summer mowing. I haven't run doubles yet, but I've often wondered why I would bother with the high lifts when running doubles. After all, I have two blades per spindle to create pressure. I need more pressure?

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