x2 spindle motor replacement options ? - Page 4


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Thread: x2 spindle motor replacement options ?

  1. #61
    Member dertsap's Avatar
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    there are instructions somewhere on the little machine shop site that shows how to do a tear down

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  2. #62
    Member nateman_doo's Avatar
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    I just looked all over there. I remember a forum member here had a tear down on his web page.



  3. #63
    Member mhackney's Avatar
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    You might be thinking about CreviceReamer's page. Scroll down for the link to tear down.

    cheers,
    Michael

    Reelsmith, Angling Historian, and Author of "The Reelsmith's Primer"
    www.EclecticAngler.com | www.ReelLinesPress.com


  4. #64
    Member nateman_doo's Avatar
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    THATS the one. the LMS has a tear down procedure, but its not as picture friendly as CR's page. PLUS LMS doesnt sell the bearing kit anymore. Probably not very hard to make.



  5. #65
    Member dertsap's Avatar
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    are you doing the mod for more torque or speed , the reason that i ask is because the high speed is increasing the brush wear , enough so that after 2 good runs I've already had to clean the contact area on the armature because the motor took a dive . Once cleaned up it runs perfect again
    Still there is no heat and everything in the motor is as new but the brushes leave a coating and the contact gets less and less as time goes on . So I'm going to knock back the rpm some
    Even though (aside from brush wear) this has worked well for me and blows away the crap board that came with my mill , I wouldn't recommend that someone do this mod if what they have is already working for them , don't fix whats not broken


    .

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  6. #66
    Member nateman_doo's Avatar
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    torque. I am not in a rush when I machine, so the speeds can be slower (although I won't complain with a speed increase), but I just can't have it stall mid project and the motors are still trying to move the part.

    Can you show me this area with the wear that required the cleaning?



  7. #67
    Community Moderator Al_The_Man's Avatar
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    Quote Originally Posted by dertsap View Post
    Still there is no heat and everything in the motor is as new but the brushes leave a coating and the contact gets less and less as time goes on . So I'm going to knock back the rpm some
    .
    I think i read you are running the motor at 7200?
    If so, that is way higher than the average DC brushed motor, especially if it is not that high a quality to begin with.
    As a rule 3000 is considered a fairly common high rpm limit for most DC brushed, there are some specially made for 6000, but they are not that common.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


  8. #68
    Member nateman_doo's Avatar
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    I want to be able to walk away from the machine, and NOT have to worry about it stalling drilling holes. I mostly work on copper and its such a gummy material that drill bits bind in it. Plus I don't know what im doing either, so I probably need more muscle to begin with.

    I shortened the length of wire from the box to the motor just to help cut down the resistance in the wire.

    The new board should be at the house by the house by the time I get home tonight.



  9. #69
    Member dertsap's Avatar
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    fair enough , I understand , I just wanted to make that point because I'm not exactly a trail blazer , I've got the do or die mentality , which usually works for me because I try not to do things blindly .
    the way I see it is in the worse case scenario I'll only be having to buy a new motor for a couple hundred

    the needed cleaning is where the brushes make contact with the armature , its a 5 minute job , the top motor cap needs to get pulled off and its right there , a little piece of scotch brite cleans it quickly .
    I'll be taking a run down and talk to a friend to see if he supplies better quality brushes , who knows what these brushes are made out of

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  10. #70
    Member dertsap's Avatar
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    Quote Originally Posted by Al_The_Man View Post
    I think i read you are running the motor at 7200?
    If so, that is way higher than the average DC brushed motor, especially if it is not that high a quality to begin with.
    As a rule 3000 is considered a fairly common high rpm limit for most DC brushed, there are some specially made for 6000, but they are not that common.
    Al.
    these motors show 6000 rpm , once fully warmed up the spindle itself is now turning at 7400 rpm so at 7400 with the belt reduction I'm spinning that motor faster than 6000 ,
    I know I'm pushing it a bit too hard , i just needed to experiment to see if it will take it . its definitely going to need a bit of a drop in rpm

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  11. #71
    Member nateman_doo's Avatar
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    I would love to make a new belt kit that would reduce the RPMs to near nothing just to have all the torque possible, and the other pully to be much larger to have all the speed. I don't need much inbetween.



  12. #72
    Member dertsap's Avatar
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    i think the belt drive is the best way to go , its smoother and I don't have to worry about destroying anymore gears , I considered making my own as well but lms sells them at a fair enough price so it was easier to just buy the setup .

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  13. #73
    Member nateman_doo's Avatar
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    I have the belt drive conversion from LMS. If I could make my own I would make some crazy ratios.

    Edit:
    The bearing replacement write up from LMS: http://www.littlemachineshop.com/Ins...ndle%20Kit.pdf

    Last edited by nateman_doo; 01-23-2012 at 03:59 PM.


  14. #74
    Member dertsap's Avatar
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    oh ya there it is , when you said that you couldn't find the info then i searched the site for it but couldn't find it for you , i thought that maybe they pulled it

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  15. #75
    Member nateman_doo's Avatar
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    no, they pulled the kit to do it, so now I will just have to make it.



  16. #76
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    Quote Originally Posted by dertsap View Post
    i think the belt drive is the best way to go , its smoother and I don't have to worry about destroying anymore gears , I considered making my own as well but lms sells them at a fair enough price so it was easier to just buy the setup .
    Got mine here.


    Working fine and a little bit less expensive. Note that is does NOT have a cover, but I don't put my hand on top of it when running anyway and a cover would be easy enough to make.



  17. #77
    Member dertsap's Avatar
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    thats a pretty decent savings over the other one , covers only get in the way anyhow , mines buried somewhere under a pile o crap , and will probably stay there till the next annual cleanup

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  18. #78
    Member nateman_doo's Avatar
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    KBLC board is finally at the house.



  19. #79
    Member dertsap's Avatar
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    did you also get the proper resistor for your motor ?

    A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........


  20. #80
    Member nateman_doo's Avatar
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    Yup. Hasnt arrived yet though



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x2 spindle motor replacement options ?

x2 spindle motor replacement options ?