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Fisher MM1 - LD, RD or Homesteader?

Discussion in 'Fisher Engineering Discussion' started by JFon101231, Jan 9, 2012.

  1. JFon101231

    JFon101231 Senior Member
    from CT
    Messages: 396

    I picked up a MM "upright" with an insta-act pump for a good price. I only needed the pump, but the upright was free with it so why not. I measured the blade mounting points and they are for the 7.5' and down sizes (~22.5" center to center), but how do I know whether this is for a LD, RD or Homestead type blades? Or maybe it doesn't matter and it would work with any of them?

    Thanks,
    Jeff
     
  2. 2006Sierra1500

    2006Sierra1500 PlowSite.com Addict
    Messages: 1,758

    It won't be a Homesteader because that has a completely different headgear. Most likely would fit LD and RD.
     
  3. mercer_me

    mercer_me PlowSite Fanatic
    Messages: 6,350

    It's not a Homesteader because that has a completely different headgear. The LD will have two trip springs and the RD will have three trip springs.
     
  4. 2006Sierra1500

    2006Sierra1500 PlowSite.com Addict
    Messages: 1,758

    He doesnt have a blade, just the headgear
     
  5. RepoMan207

    RepoMan207 PlowSite Fanatic
    from Maine
    Messages: 5,031

    Jeff, A good majority of the A frame forks are 22.5", including anything from 6.9' up to 9'. Was the pump attached to the headgear, or did you buy it separately? I find it odd that it isn't a complete setup. Am I correct in saying that it didn't come with the A frame section?
     
  6. TJS

    TJS PlowSite.com Addict
    Messages: 1,316

    Are you selling it. Post a pic. I want to do another old school diamond conversion.
    T.J.
     
  7. JFon101231

    JFon101231 Senior Member
    from CT
    Messages: 396

    @TJS - do you want just the upright so you can have the ear mounts, or the pump w/ bracket, wiring, lift piston etc. too?

    I would consider selling it for the right price, but I was going to keep the pump and convert it to hydraulic, pick up a 7.5' foot blade w/ conventional a-frame, add a set of lights, and sell that way to make a few bucks back.

    @Repoman - I was under the impression that 22.5" was 7.5' and down, 25" was 8' and up which is why you can't put a 8' blade on a 7.5' a-frame. I have 2 8' blades, and they are both 25". When I looked at the Fisher parts poster, it shows 3 different a-frame types that have the 22.5" mounting distance, but no way to tell them apart. I assume either LD or RD with that pattern would mount to this.

    Here is what I bought.

    MM1 upright.jpg
     
  8. TJS

    TJS PlowSite.com Addict
    Messages: 1,316

    Upright and yellow diamond
    Pm me a price.
     
  9. RepoMan207

    RepoMan207 PlowSite Fanatic
    from Maine
    Messages: 5,031

    There are actually 4-5 if you include the newer MM2 A frames @ 22.5". Which A frame you need depends on what size blade that you ultimately want. Here are a few examples.

    Sorry about the markings, I had previously edited them for another thread.

    [​IMG]
    [​IMG]
    [​IMG]
     
  10. RepoMan207

    RepoMan207 PlowSite Fanatic
    from Maine
    Messages: 5,031

    Headgear and Lift Arm.
     
  11. JFon101231

    JFon101231 Senior Member
    from CT
    Messages: 396

    Learn something new every day - and what is the difference between the L blade and M blade of the same size?

    TJS - PM on its way.

    Jeff
     
  12. RepoMan207

    RepoMan207 PlowSite Fanatic
    from Maine
    Messages: 5,031

    The L blades are the older models. The tell tale signs of an L blade are the L brackets on the bottom side of an A frame, and the bracket (as seen below) on the back side of a blade. The headgear you have will work with both, but the A frame and blade have to be one or the other, not mismatched.

    The M style blades also bring the smaller 6.9' - 8' blades into the picture for you as well.

    .



    Lblade.jpg

    Lblade.jpg