My back wheel bearing exploded!

Discussion in 'Motorized Cruiser Bicycles' started by artcfartc, Oct 3, 2011.

  1. artcfartc

    artcfartc New Member

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    While driving my Op Cruiser home from work at about 30mph, my back wheel locked up. Thankfully I didn't eat it, and no-one was driving behind me. I'm also very lucky that my wife answered the phone and came to rescue me so I didn't have to carry my bike all the way home. I first thought that the chain had jammed, or the clutch had gone out, but no, one of the bearings in the back wheel exploded or melted (see pic). I had only been going 30mph off and on for about 10 minutes. Has this happened to anyone else?

    I replaced the back wheel with a '60's Bendix brake cruiser wheel knowing that it would take more abuse, but I'm still a little scared of using my bike for transportation. Are there any more measures I should take to insure that this NEVER happens again?
     
  2. artcfartc

    artcfartc New Member

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    Here's the pic. It didn't upload 1st time. Also tech specs. I'm running a 60-80cc 2 stroke engine kit of unknown origin.
     

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  3. flatblack

    flatblack New Member

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    Lucky you didn't go dirt-tracking down the road like I did when mine locked do to pull brake wedging between the frame and tire. Glad you're all right!
     
  4. happyvalley

    happyvalley New Member

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    The 1/2 fried caged bearing, where is that from?
     
  5. artcfartc

    artcfartc New Member

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    It's the outer bearing on the back wheel. I think it was the side with the brake arm and the gear for the motor.
     
  6. Fulltimer

    Fulltimer New Member

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    About the only thing I can think of is to repack the bearing often. Keep a close eye on it until you get an idea of how often you need to repack it. Your back wheel and my front brake & fork. No fun is it!

    Terry
     
  7. whelan wheels

    whelan wheels Member

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    I noticed that your using bearing cages. If you get rid of the cages and free float your bearings you'll never run into that problem again, just make sure that you pack it well with good quaility bearing grease and you should be ok. Thats what i do with all of my rear wheel bearings, never had a failure yet with that system.

    xct2 cflg
     
  8. cory151

    cory151 Member

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    Whered you source the free floating bearings?
     
  9. whelan wheels

    whelan wheels Member

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    You just remove the bearings from the cages and put them in the races,but make sure that you pack grease in the races first then place the bearings in after because the grease will hold the bearings in place. Then place your axel through and after that your cones and you should be good to go. I guess the term is bearings that ride with out a bearing cage are often called free floating bearings.

    xct2 cflg
     
    #9 whelan wheels, Oct 3, 2011
    Last edited: Oct 3, 2011
  10. Greg58

    Greg58 Well-Known Member

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    I have a o/p that has over 600 miles on it with no wheel bearing problems, I cleaned and repacked the bearings with a very high quality industrial grease called alithicon. We have used at work for about 20 years now, it keeps bearing failures down because it lowers the temp. of the bearing.
     
  11. happyvalley

    happyvalley New Member

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    Loose ball, but leave one out. Check the races for wear, adjust preload carefully then check again for play after mounted on the bike.

    In the original pic of the failed bearings, the grease looks pretty contaminated. At the speeds I see some talking about riding I'm surprised this isn't happening more often.
     
  12. artcfartc

    artcfartc New Member

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    If I free-float the bearings, I'll need more bearings to fill in the gaps that are created, right?
     
  13. whelan wheels

    whelan wheels Member

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    Yeah , probably you'll need at least 9 per side is the usual count , depending on the type of hub your using.


    xct2 cflg
     
  14. Mannhouse51

    Mannhouse51 New Member

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    I had that happen to my rear wheel last summer , it REALLY sucked! Now greasing the wheel bearings is on my preventative maintinence list. Once a month I clean and pack the bearings, clean the air cleaner , etc. No problems since. I've been using a blue wheel bearing grease by Mag1. It's waterproof and works well.
     
  15. cuberasnapper

    cuberasnapper New Member

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    just buy a good rear wheel and ride out with no worries
     
  16. happycheapskate

    happycheapskate New Member

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    That's awful. Glad you are ok. I think it may be possible that the cones were too tight in your wheel. I agree, loose-ball bearings are good, no cage to deform or interfere. The cages are used to simplify assembly and maintenance, since coasters are generally used on low speed bikes that won't see a lot of use or maintenance.
     
  17. Saddletramp1200

    Saddletramp1200 Custom MB Buiilder

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    The bike was made to go 15-20 tops. They put some brown stuff on the bearings that could be grease. Very little of it . I call china bearings buckshot, they go boom! I'm gald it was the back wheel. Check your wheel bearings often. Like every week! You don't it can be E.R. time. (c)
     
  18. FarRider

    FarRider New Member

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    Whoooo Hoooo! bet that scared ya.
    Now THATS a catastrophic bearing failure!
    I gotta hand it to ya... when you break stuff you do it with style.
    I agree with Whelan, loose the bearing cages and use high quality grease.
    Was it a coaster brake hub? those generate alot of heat.
    FR
     

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