Severe hidden corrosion

Discussion in 'BIKE TALK' started by horsefarmer, Nov 25, 2019.

  1. horsefarmer

    horsefarmer

    Joined:
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    3,038
    Location:
    Peshtigo Wisconsin
    2009 Next LaJolla bike with coaster brake. Purchased in poor yet somehow still rideable condition at auction by my brother so no known history. Had knobby tires on it but I wanted to swap the tires for street treads.
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    Front wheel was swapped out with steel wheel marked "Roadmaster" when I got the bike. shoulda been my first clue...
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    After pulling tire I was inspecting and cleaning the rim and noticed the rim strip looked oddly bumpy where the nipples are so I looked underneath and lots of corrosion around the nipples. Both white powder from the aluminum rim and good old brown rust from the steel nipple. Thought I would get by with cleaning the rust off and paint on som conversion coating but rust is very bad and some nipples have very little flanged head left so I'm surprised its so unsafe as the knobby tire and tube were newer and if I had wanted to I probably would of run it cause it ran true with no broken spokes.
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    Surprise! Gently probing the rusty heads of the nipples, 2 of the spokes broke off at the coaster. Either the spokes are defective on the hub end, or the spokes were stretched by the corrosion? Whatever steps Next took to prevent the steel spokes and nipples from reacting with the aluminum wheel was a failure.
     
    Grant likes this.
  2. MattiThundrrr

    MattiThundrrr

    Joined:
    Jul 16, 2019
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    America's Friendly Hat
    I'd also think about the grease in the bearings. Next is a Walmart bike now, not sure if yours is from the Kent era or not...
     
    horsefarmer likes this.
  3. horsefarmer

    horsefarmer

    Joined:
    Apr 1, 2014
    Messages:
    3,038
    Location:
    Peshtigo Wisconsin
    Yes, made by Kent. I have had 4 Kent built bikes and all were cheap and rough. I would not mess with it but I like the aluminum frame... Probably toss the rest.
     
    RustyGold likes this.

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