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Thread: ATC200 crank rebuild

  1. #46
    Scootertrash's Avatar
    Scootertrash is offline Just Too Addicted: Protecting Our Community Lord of the trike
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    Quote Originally Posted by Gabriel View Post
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    Quote Originally Posted by fabiodriven View Post
    Trick the people into thinking they're enacting their own will and you have willing slaves.

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  2. #47
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
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    Quote Originally Posted by Gabriel View Post
    The rod to crank side clearance is .0025 itís a brand new SPI rod, bearing, thrust washers & crank journal.
    That's a little tighter than I would make it, especially with an aftermarket rod.


    Quote Originally Posted by Gabriel View Post
    I figure it will loosen up a little as it breaks in and the thrust washers wear a little.
    I prefer to not have parts make their own clearances by wearing metal away.

    I would use a very good oil with that tight clearance.

  3. #48
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    I can try to loosen it but no way it would ever run this true again.
    Amateur Resurrectionist

  4. #49
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
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    Quote Originally Posted by Gabriel View Post
    I can try to loosen it but no way it would ever run this true again.
    Crank trueness is irrelevant if the rod seizes, and it is certainly possible to get it to run at least close to what it currently is. This being said, I'm not saying that it will definitely seize, or that you should definitely widen the clearance, and it may be just fine, especially if you don't plan to rev the bejesus out of it, but I for one would seriously consider increasing the clearance as I would prefer to have a greater margin of safety if it was available to me.

  5. #50
    Scootertrash's Avatar
    Scootertrash is offline Just Too Addicted: Protecting Our Community Lord of the trike
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    What does the Manual say the tolerance should be?
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    Quote Originally Posted by fabiodriven View Post
    Trick the people into thinking they're enacting their own will and you have willing slaves.

    Liberalism suspends the intellect of its victims, while at the same time tricking them into believing that they're smarter than everyone else.


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  6. #51
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    Quote Originally Posted by Scootertrash View Post
    What does the Manual say the tolerance should be?
    Manual says .05mm - .30mm which is .002-.012

    That seems like a BIG amount of variance.

    I checked it again for good measure and I can with a mild bit of force get a .003 feeler in there. That's within spec and I am going to run it.
    Amateur Resurrectionist

  7. #52
    BarnBoy is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I would put it in the middle of spec if it was me. 0.006" should be great.
    1984 HONDA ATC200M

    Da velder

  8. #53
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
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    If I were you I'd have Glamy measure your crank.
    85 Tri-Zinger 60
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  9. #54
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
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    Again, that is within spec for an ORIGINAL honda rod, and that is still on the tight side and would likely be covered under the warranty if it seized when the vehicle was new, but you seem to know best.

  10. #55
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    Quote Originally Posted by BarnBoy View Post
    I would put it in the middle of spec if it was me. 0.006" should be great.
    Hi Barnboy.........i`m curious ........what does that mean ? ........glad to have you on board !..........you`re not related to Barnett468 ......are you ? .........and don`t show your crank to Fabio or Gabriel or Barnettboy468 ........no worries .....i know right

  11. #56
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    Quote Originally Posted by barnett468 View Post
    Again, that is within spec for an ORIGINAL honda rod, and that is still on the tight side and would likely be covered under the warranty if it seized when the vehicle was new, but you seem to know best.
    No I certainly don’t! Lol!!

    It does make sense to have a little more clearance. I’m just being a whiny betch about it because it’s running true as is.
    Hopefully I can put a little pressure on it and not “move it”.
    Last thing I want is to regret being lazy. Been there. Done that.
    I will see if I can get it to .005-.006 without mucking it up.

    Thanks guys.
    Amateur Resurrectionist

  12. #57
    barnett468 is offline FACT ! I have no edit button Arm chair racerThe day begins with 3WW
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    [QUOTE=Gabriel;1491862]
    I will see if I can get it to .005-.006 without mucking it up.[QUOTE]

    Do you have a strong plate with a slot in it to press it apart some?

  13. #58
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    I do. I made one just for pressing it apart. I think I will set it up in the press (when i can get back to the press) with a dial indicator zeroed on the crank journal to monitor movement. Seems the safest route.
    Amateur Resurrectionist

  14. #59
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    I realize you’ve already done the crank, but do you have pictures of your fixtures in use? How thick is the plate you made to separate the crank?

  15. #60
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    Pics on page 1
    Plate is 3/8” thick
    Amateur Resurrectionist

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