my spokes keep breaking

Discussion in 'Commuting and Road Safety' started by missionaryman, Oct 9, 2006.

  1. missionaryman

    missionaryman New Member

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    I do a 20km return commute to work each day on my Specialized Sirrus Comp which is fitted with Alex AT400 rims 700x28.
    I was told these were rated for a 100kg rider, when I started in February I was 114kg now I'm 106kg.
    Since I started I found if I went over bumps or cracks in the concrete fast I'd break spokes so I chose a smoother path.
    Lately I broke 2 spokes on smooth concrete, one straight after the other so I told the bike shop (this was about my 4th time in for broken spokes) and they said because the bike was about 2 years old that the Taiwanese spokes it came with were probly all due for replacing with some better quality European spokes they supply.
    So I got them to change all the rear spokes. Today about 3 weeks later I broke a spoke on smooth concrete again, took it easy for the rest of the 4km left and when I got to work and had a look at the wheel the next spoke along broke while I was looking at it.

    Is there something wrong here or is it because of my heft that they keep breaking, I asked for heavier guage spokes to be fitted but apparently you can't do that?
    Does anyone know of a solution - it will probably be about 3 more months before I fall below 100kg.
     
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  2. mrkott3r

    mrkott3r New Member

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    What spokes did they relace it with. I had the same problem kinder. My wheels are getting on a bit and the rear would every so often break a spoke, so I took it in got it relaced with double butted DT swiss spokes and everything is great.

    If the spokes are good maybe its time to get a different set of wheels. May I suggest something like Velocity deep Vs with some sort of reasonable hub like ultegra for commuting? Should be strong but not light, you're commuting so strength should be important.
     
  3. dot

    dot Member

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    Not butted! Straight 2mm spokes and brass nipples only. The problem might be in the soft rims. Alex rims aren't the strongest choice.
     
  4. mrkott3r

    mrkott3r New Member

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    double butted are perfectly fine.

    If you want to spend money there are plenty of options. I always find it pretty easy to talk myself into an upgrade.
     
  5. cyclepromo

    cyclepromo New Member

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    I checked out the alex website and it says the rims (AT400) are double walled single eyelet which makes them a decent strength design.

    Are the rims 32 or 28 hole. That would make a big difference. You should have 32 hole rims.

    I'm sure the shop would have designed the spoke pattern with strength in mind (three cross).
     
  6. dot

    dot Member

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    I don't think they are fine for 114 kg rider. I'm 80kg and I ride and race off-road on butted 2.0/1.8 spokes with alloy nipples. They are quite fine but wheels require some truing regularily.
    When I was 90-93kg I was breaking any spokes except 2.0/brass nipples combo. I commuted and rode XC and was very unskilful.
     
  7. missionaryman

    missionaryman New Member

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    they are 32 hole, and they did relace the wheel with swiss spokes when they last did it.

    can it be wrong tyre pressure? I used to set the back to about 100psi but the day they broke I tried 115psi that morning.
     
  8. neednoexcuse

    neednoexcuse Member

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    Many people experience this problem and it's a common problem. Well, any temporary solution to this would not help in my opinion. You should solve this problem permanently by replacing your spokes with the newer ones. There are many good quality spokes available in the market that you can buy for your cycle. I would recommend you to choose a good quality spokes (expensive) instead of the cheaper ones.
     
  9. tgthewriter1

    tgthewriter1 New Member

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    I suggest going to goodwill to get a reliable bike. The bikes at goodwill are dependable. They last a long time not break as fast as the bike shop bikes.
     
  10. Damien Lee

    Damien Lee Active Member

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    You can chalk this down to inferior materials and/or production methods. As the saying goes - 'they don't make them like they used to', couldn't ring any more true. Let's not forget that most products are purposely built with a minimum lifespan in order to accelerate the process of repeat business. However, this is a bad move as consumers lose trust and move on to another brand. Only problem, is that many other brands follow a similar strategy.
     
  11. north woods gal

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    I'd at least try dropping the tire pressure back down under 100 psi and see it it helps. Won't cost you a thing and might even make for a more comfy ride. Another option is to try a wider tire to spread out the load, if that's doable on those rims.
     
  12. warrengeb

    warrengeb Member

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    As everyone said, you need to change your spokes. It keeps breaking due to the low quality. You should always choose a good quality spokes. You can search it up for the Internet and you will also get it for a very cheap price. So, go and search
     
  13. Froze

    Froze Well-Known Member

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    double butted spokes are stronger than straight gauge spokes, then you need to find a quality spoke like DT or Sapim, find a quality rim like Mavic Open Pro, or Velocity Aero, or Aerohead, or Fusion if you want a more aero wheel.

    If you don't mind spending a bit more money the Sapim Xray spoke are great and aero but they are more complicated to true.

    Depending on your weight will depend upon how many spokes should your wheel have, so tell us your weight.
     
  14. serf

    serf New Member

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    If you don't mind spending a bit more money the Sapim Xray spoke are great and aero but they are more complicated to true.
     
  15. Froze

    Froze Well-Known Member

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    Sapim Xray spokes are very nice spokes but they are intended to make a wheel lighter and aero, but not stronger for high weight bearing loads, the DT Alpine III is intended to make the wheel stronger for high weight loads, and they are double butted making them stronger at the critical areas of the spoke and reducing weight in the non critical areas of the spoke.
     
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