Changing 3 pole to 5 pole motor

JoeS Jan 30, 2015

  1. JoeS

    JoeS TrainBoard Member

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    Wow, glad I had a day off, I needed every minute. First, let me start by saying thanks to AJCkids.com for having a motor in stock! Ok, you all know I really love those MT moguls, well, this last weekend one bit the dust. old motor ran hot and no cleaning and brush adjustment could fix. So I ordered a replacement. Now I read the do it yourself Z scale site on how to replace, but I don't have a gear puller and no store in my area has one so I had to pound the old motor out through the worm gear ala broken drill bit or as I wound up using cut off safety pin..

    It sucks. Suuuuuuuuuuuucks period. I was so afraid of breaking the frame it took hours, Tap tap tap tap tap... Good lord I thought I should just buy another loco mechanism. Nope, too arrogant. Finally tapped the SOB out.

    So now I have to tap the new motor into the old worm. Took about an hour maybe got it too deep but by golly I got it, Worse part is putting that mess back together, What a pain! I used an ottlite with a magnifier to see everything but boy.

    So it runs, loud as hell but not hot at all. performance is basically the same as far as I can tell but heck I ain't gonna tap and reassemble over and over to see if it gets more quiet. Remember I use jorgers so 3 pole 5 pole makes no difference with these controllers.

    All in all, this is not for the faint. I learned a heck of a lot though. I can tell you I am glad I do not work in a shop assembling these things! :)
     
  2. shamoo737

    shamoo737 Staff Member TrainBoard Supporter

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    Good job Joe. After doing a hard project like that, you must feel proud.
     
  3. JoeS

    JoeS TrainBoard Member

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    Thanks John, more relieved that it worked I suppose. I have to say, in Z scale taking the plunge and trying to do thinks yourself is daunting because everything is so small, delicate, and expensive that you get worried that no way can I do this. However, there are so many helpful sites, like the "do it yourself z scale" and so many helpful people that you feel like what the heck, I can do this.
    Sure sometimes there is a screw up but by and large I think that is the allure to Z. It is not easy and you have to be willing to work. The payoff is watching those little gems roll. great stuff.
     
  4. Chris333

    Chris333 TrainBoard Supporter

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    I pounded the shaft out of Marklin worm once. I used a slightly smaller than 1mm old broken (tip) drill bit and a metal plate with a slot in it to wack it out.
     
  5. JoeS

    JoeS TrainBoard Member

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    I just had a vise and a tack hammer so the going was slow for sure. One thing for sure I really have to respect the simple design of the vertical motor and gears. Simple yet effective for what 40 years?
     
  6. z.scale.hobo

    z.scale.hobo TrainBoard Member

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    Harbor freight tools has a small arbor press for $29. That works WAY better than the gear puller Karp recommends on zscale.org.

    Frank Daniels
    Owner - z.scale.hobo, z scale repairs and more
    www.zscalehobo.com
     
  7. JoeS

    JoeS TrainBoard Member

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    I'll look into it as I have a harbor freight in my area. Thanks
     
  8. Jay Gould

    Jay Gould TrainBoard Member

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    JoeS---In the opening post you said "remember I use jorgers" and I wonder what is meant by "jorgers"?
    (I had to override the spell check on this---it wanted me to say "joggers"!)
     
  9. z.scale.hobo

    z.scale.hobo TrainBoard Member

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    System Joerger speed controller. It is a very nice speed controller that I believe is no longer available. Noch made their own version - part number 88161 (I have some in stock) and Ztrack also has the "Snail Speed" controller or Medvend panel mount version. These are some of the best slow-speed controllers available for z scale.

    Frank Daniels
    Owner - z.scale.hobo
    Irvine, California USA
     
  10. JoeS

    JoeS TrainBoard Member

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    Hi Jay, i think Frank explained it well. For Straight DC the jorger delux is the best controller I've ever used. I have used the snail, the modified MT mrc 1300, the marklin whitle pack for Z and various others for N. None of these are on the same page. The closest is the snail speed, but it lacks the EMF feedback if I remember correctly. That is what makes those old marklin 3 poles kick at that mid range speed so well.
     

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