Bad clutch bearing

Discussion in 'Motorized Bicycle General Discussion' started by BlueSmoker, Jul 3, 2016.

  1. BlueSmoker

    BlueSmoker New Member

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    The balls fell out from my clutch bearing so i have ordered a new one. I will get them tomorrow. But do you know if there are some better types of clutch bearing i could replace to? Have it happened to you that that some balls just falls off?
     
  2. crassius

    crassius Well-Known Member

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    nope, there is a stop ring in the hub to prevent it from being pressed too far, but I'd guess yours wasn't pressed far enough by factory

    Only thing to look out for is fine, steel wires sticking out of clutch pads that can get into bearing and lock it up (trim with scissors every so often if you see them, or replace the pads).
     
  3. BlueSmoker

    BlueSmoker New Member

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    Okay, so what is the best way to press the bearing after i have put the balls in it?
     
  4. crassius

    crassius Well-Known Member

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    best way is to order the hub assembled - I would never do that pressing job again

    if one has to do it, grease is not a good idea for holding bearings in place unless one doesn't have a mag rotor to stick to the steel to magnetize it enough to hold the bearings, if using grease, it is a good idea to wash in out before using it to keep pads clean when running

    as far as actual pressing goes, if a bearing press is not available, one could try a large vise, but the press must be slow and gentle to keep bearings in place

    if I didn't have one, I might try a bottle jack pressing a long piece of wood up under the bottom of my workbench
     
  5. BlueSmoker

    BlueSmoker New Member

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    I don't know if it is assembled but i hope so. If it is not, is it only for me to put the balls in it and then some grease? I don't really understand how those balls can remain inside there with only grease, when there is no type of border.
     
  6. crassius

    crassius Well-Known Member

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    usually, putting it together would be a job for a mechanic
     
  7. BlueSmoker

    BlueSmoker New Member

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    Okay, so you mean that it will probably fail if i only use grease?
     
  8. crassius

    crassius Well-Known Member

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    no, but not understanding how the grease might work *may* indicate a lack of enough experience to get it right

    anything can be answered by google, but some things require understanding also
     
  9. BlueSmoker

    BlueSmoker New Member

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    So, no i got this bearing. I am going to go to a mechanic so they can put it together. Do you think that it is an easy and cheap job to do?
     
  10. crassius

    crassius Well-Known Member

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    that would depend on mechanics in your area, but I suspect it may cost more than just buying one that is assembled

    possibly this one - "http://www.gasbike.net/collections/clutch-parts/products/complete-assembled-clutch"
     
  11. BlueSmoker

    BlueSmoker New Member

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    Thank you! Ordered it now.
     
  12. crassius

    crassius Well-Known Member

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    be aware that there are a couple diff thicknesses of woodruff keys for these - new one may not be same size as old one and slot in shaft

    this is not a problem, though, as it will fit the shaft OK, but may just need a touch of filing to get the key to fit nicely
     
  13. BlueSmoker

    BlueSmoker New Member

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    I think i got it fixed now. Used some grease. But the engine won't start. Maybe too mutch fuel, with too mutch oil (1:16). Will try again tomorrow.
     

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