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Sun 28" hub problem!

Started by MuniAddict · · Last activity · 21 posts · 251 views

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rec.sport.unicycling
Published
9 September 2007
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11 September 2007
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MuniAddict
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  1. I'm giving my Sun 28" to a friend who wants to use it as a distance uni,
    and since I don't use it at all I thought why not give it to him. But
    as I soon tried to test ride it, I immediately noticed that the hub
    seems to be way loose and "slips" whenever i either slow down or put
    any kind of torque into the cranks.

    I can just feel it totally slipping 'round! Is there any way to fix
    this by somehow tightening the axle/hub? What about pounding the axle
    out (or is there a "keyway" that is supposed to lock it in?) and
    reinstall it wil locktite? I know this isn't the greatest quality uni,
    but it's virtually brand new and hasn't really had any use. Thanks to
    anyone who can help.🙂

    +-------------------------------------------------------------------+
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    +-------------------------------------------------------------------+

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  2. Eastern pedals!!!! How do you like them?

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  3. Evan Byrne said:

    Eastern pedals!!!! How do you like them?

    😕 In any case, the hub is toast. Not worth replacing it would
    cost almost as much a buying a complete new 28! Thery're cheap.

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  4. Pretty much the same size as a 29er. Wont last a lifetime but the price
    is right.

    http://stores.channeladvisor.com/ebikestop/items/01-67722

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  5. Take some pictures of the hub...

    I bet you can just weld it so it doesn't slip.

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  6. Huh? What do you mean "loose"? Is the axle spinning inside the hub?
    How can that be? I'm not familiar with the internal design of these
    hubs, but perhaps you could tack weld it (it is certainly cheapo enough
    steel for welding).

    Did you do alot of hops or drops with it? Actually now that I think
    about it, hops/drops shouldn't bother the axle-to-hub relationship, as
    you've got weight on both forward and back pedals.

    Perhaps it is simply a defective hub. I agree that it isn't worth
    replacing, as new Suns are really cheap ($100 USD is what I paid), but
    a quick weld might be worth a shot.

    I've got a Sun 28" and it's been there and back again with nary a hub
    problem. The square taper cranks are garbage, and I no longer use my
    Crazy Cranks (do a forum search), and the square taper axle ends (the
    threads, actually) have seen better days, but everything else is
    solid.

    Well the seatpost/frame connection is also garbage, but that's OK too.

    This summer I was going to get a Coker (or similar big wheel), but it's
    September already and I haven't been riding my Uni very much. I got
    bit by this bug big time:
    http://tinyurl.com/23ab4g
    I'd like to see some you hardcore Muni guys try those trails! I bet
    you could do it, it's like 1.5 miles down some steep rocky switchbacks.
    Maybe.

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  7. Hey MuniAddict, that channeladvisor price of $65 is a great deal.

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  8. CrazyChrisVT said:

    Huh? What do you mean "loose"? Is the axle spinning inside the hub?
    How can that be? I'm not familiar with the internal design of these
    hubs, but perhaps you could tack weld it (it is certainly cheapo enough
    steel for welding).

    Did you do alot of hops or drops with it? Actually now that I think
    about it, hops/drops shouldn't bother the axle-to-hub relationship, as
    you've got weight on both forward and back pedals.

    Perhaps it is simply a defective hub. I agree that it isn't worth
    replacing, as new Suns are really cheap ($100 USD is what I paid), but
    a quick weld might be worth a shot.

    I've got a Sun 28" and it's been there and back again with nary a hub
    problem. The square taper cranks are garbage, and I no longer use my
    Crazy Cranks (do a forum search), and the square taper axle ends (the
    threads, actually) have seen better days, but everything else is solid.

    Well the seatpost/frame connection is also garbage, but that's OK too.

    This summer I was going to get a Coker (or similar big wheel), but it's
    September already and I haven't been riding my Uni very much. I got
    bit by this bug big time:
    http://tinyurl.com/23ab4g
    I'd like to see some you hardcore Muni guys try those trails! I bet
    you could do it, it's like 1.5 miles down some steep rocky switchbacks.
    Maybe.

    I think yes, the hub was defective from the start. I never did any kind
    of drop/hop with it at all and it was the very first uni I bought when
    I re-started riding about 1.5 years back. It's too late however, as I
    stripped the axle threads trying something stupid. No biggie as a brand
    new Sun 28 can be had for as little as $64 online. Thanks everyone for
    the feedback.

    --
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  9. Where did you get the uni at? You should bring it back and talk to them
    about it. At one point in time there was a product recall on the Sun
    hubs... but it should have happened before the uni ever got to you. Sun
    took them all back and replaced/repaired all of them.

    Yes, it is possible to get in there and re-weld the spots that have
    broken free.

    On the other hand, I have one that is broken like this and it's great
    fun. Nothing like making an accomplished unicyclist fall flat when they
    try to mount.

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  10. jl0r said:

    Where did you get the uni at? You should bring it back and talk to them
    about it. At one point in time there was a product recall on the Sun
    hubs... but it should have happened before the uni ever got to you. Sun
    took them all back and replaced/repaired all of them.

    Yes, it is possible to get in there and re-weld the spots that have
    broken free.

    On the other hand, I have one that is broken like this and it's great
    fun. Nothing like making an accomplished unicyclist fall flat when they
    try to mount.

    Haha yeah it almost felt like a "free wheel" when i tried to stop or put
    and extra down force on the pedals! No luck in returning it as I've had
    it so long.

    Plus, the thread got distorted somehow while using my pitman puller to
    remove the bearings; it has a point on it which caused a deep
    impression on the end of the axle causing it to "bulge" out somewhat so
    now the axle bolt won't fit any more! Oh well.

    I will say I've never encountered bearings that were so difficult to
    remove; they were incredibly tight and took every ounce of strength I
    had to get them off!:eek:

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  11. MuniAddict said:

    I will say I've never encountered bearings that were so difficult to
    remove; they were incredibly tight and took every ounce of strength I
    had to get them off!:eek:

    You need pounds of strength, not ounces... 🙄 No wonder it was
    hard, using ounces to get them off.

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  12. this happened to my sun 24" THREE TIMES. i would just take it to my LBS
    and they would send it off to for fixing, free of charge.

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  13. Det-riot said:

    this happened to my sun 24" THREE TIMES. i would just take it to my LBS
    and they would send it off to for fixing, free of charge.

    How long have you had it?

    Or, how long had you had it the third time it needed fixing?

    Because as Terry said, he's had it for 1.5 years, and doesnt think he
    can get it replaced *at least not for free*

    maybe *depending on where you take it* they might at least send it in
    or try to help fix it...the guys *at least at MY LBS* are really nice,
    and usually try to help

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  14. munifreaker said:

    How long have you had it?

    Or, how long had you had it the third time it needed fixing?

    Because as Terry said, he's had it for 1.5 years, and doesnt think he
    can get it replaced *at least not for free*

    maybe *depending on where you take it* they might at least send it in
    or try to help fix it...the guys *at least at MY LBS* are really nice,
    and usually try to help

    i had it for about a year, but the hub failed all 3 times in like 2
    months

    --
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    Ducttape said:

    sounds like he toook a feild trip to jail.... DON'T DROP THE SOAP
    DUDE!!!

    KOXX-ONE* DOES NOT* SUCK!!!!
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    '1000th Post' (http://tinyurl.com/33shzt)
    _*UNICYCLE_FOR_DONUTS!!!!*_
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  15. Det-riot said:

    i had it for about a year, but the hub failed all 3 times in like 2
    months

    Ah.
    Did it come with any sort of warranty information?

    do you have any idea of how long they'll help for?

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  16. munifreaker said:

    Ah.
    Did it come with any sort of warranty information?

    do you have any idea of how long they'll help for?

    idk how long they'll help but i jsut took it in to my LBS and said
    that it was slipping and they sent it to be welded into place. I could
    point out where are of the hub that slips. after it broke the 2nd time
    they just gave me a new hub

    --
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    Ducttape said:

    sounds like he toook a feild trip to jail.... DON'T DROP THE SOAP
    DUDE!!!

    KOXX-ONE* DOES NOT* SUCK!!!!
    'MRIS!!!!' (http://tinyurl.com/2486qk)
    '1000th Post' (http://tinyurl.com/33shzt)
    _*UNICYCLE_FOR_DONUTS!!!!*_
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  17. So do you think its worth trying to take it into a LBS and see if
    they'll fix it?

    or not since it was purchased online?

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  18. munifreaker said:

    So do you think its worth trying to take it into a LBS and see if
    they'll fix it?

    or not since it was purchased online?

    go for it.

    if not its not like its a KH29 or anything, so your not losing that
    much if its a no go

    --
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    Ducttape said:

    sounds like he toook a feild trip to jail.... DON'T DROP THE SOAP
    DUDE!!!

    KOXX-ONE* DOES NOT* SUCK!!!!
    'MRIS!!!!' (http://tinyurl.com/2486qk)
    '1000th Post' (http://tinyurl.com/33shzt)
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  19. this happened to my friend's uni, he got it welded up and it works fine

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  20. So (kinda as a poll type of thing)

    Who thinks it would be best to just try and take it to a LBS?

    *just wanna make sure I tell Terry what everyone thinks is best*

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