Advertise on Bikeforums.net



User Tag List

Page 2 of 2 FirstFirst 12
Results 26 to 35 of 35
  1. #26
    Newbie
    Join Date
    Mar 2014
    Location
    Bangkok, Thailand
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hi everyone. New here and quite late on the discussions on cx-rays vs other spokes. Another angle on the topic here. I was given a very good deal on Gipiemme Tecno 155 Equipe 20/20 wheelsets with 30.5 mm height alloy rims. Both wheels came complete with Sapim cx-Rays. I was satisfied for about 5 months until 2 spokes broke off the NDS rear wheel. Probably from extensive bumps, potholes, and grinding up steep hills. To make matters worse, I'm living in Thailand and the bike shops don't carry the cx-Ray lengths I need, which are 275 front,275 NDS rear, and 286 DS rear. I will have to order them from the US with about 14 dollars shipping cost. The cost of 8 spokes plus shipping will cost as much as replacing the whole rear wheel with dt swiss spokes here. Are the cx-rays worth that extra cash for weekly club rides and occasional races? I weight about 160 lbs and the roads here are not always smooth. I know they are great spokes but are they over qualified for my riding? I have the options to:
    1. order the replacement cx-rays with some spares
    2. Keep the existing cx-rays on the front wheel and rear DS. Rebuild the NDS with other options of spokes (dt swiss is widely available here. For sapim only lasers come in 275 length
    3. Rebuild the rear wheel with other spokes on both sides

    Please advice
    thanks

  2. #27
    Senior Member
    Join Date
    Jun 2007
    Location
    Haunchyville
    Posts
    6,231
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    I would go with option 3.

    The aero benefits of the cx ray aren't of much use on the rear DS, and since you have already broken more than one spoke back there I would be inclined to rebuild the whole thing. DT Swiss are decent spokes so if you can get them local I would use them. 20 isn't a lot of spokes for a 30mm rear so I would go with the standard DB, the Competition.

  3. #28
    Newbie
    Join Date
    Mar 2014
    Location
    Bangkok, Thailand
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks, canam73.

  4. #29
    just another gosling Carbonfiberboy's Avatar
    Join Date
    Feb 2007
    Location
    Everett, WA
    My Bikes
    CoMo Speedster 2003, Trek 5200, CAAD 9, Fred 2004
    Posts
    8,188
    Mentioned
    4 Post(s)
    Tagged
    1 Thread(s)
    I'm under the impression that Cx-Ray spokes are 14/15/14, same as other DB spokes? Spokes usually fail at the elbow from fatigue, and the NDS is the usual side because it's typically undertensioned when built by someone who does it by feel or without a meter.

  5. #30
    Senior Member
    Join Date
    Jun 2007
    Location
    Haunchyville
    Posts
    6,231
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Carbonfiberboy View Post
    I'm under the impression that Cx-Ray spokes are 14/15/14, same as other DB spokes? Spokes usually fail at the elbow from fatigue, and the NDS is the usual side because it's typically undertensioned when built by someone who does it by feel or without a meter.
    CX Rays are a flattened Laser which is 2.0-1.5-2.0 So 14/17/14 I think? The regular "CX" is a flattened Race, which is there standard 14/15/14 DB.

    I don't know that the standard DB will help much, that wheel may have been badly tensioned but it also just doesn't sound like enough spokes. I don't think the aero or weight advantage of CX Ray is going to be missed and if a standard DB gives it any extra strength it will be worth it.

  6. #31
    just another gosling Carbonfiberboy's Avatar
    Join Date
    Feb 2007
    Location
    Everett, WA
    My Bikes
    CoMo Speedster 2003, Trek 5200, CAAD 9, Fred 2004
    Posts
    8,188
    Mentioned
    4 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by canam73 View Post
    CX Rays are a flattened Laser which is 2.0-1.5-2.0 So 14/17/14 I think? The regular "CX" is a flattened Race, which is there standard 14/15/14 DB.

    I don't know that the standard DB will help much, that wheel may have been badly tensioned but it also just doesn't sound like enough spokes. I don't think the aero or weight advantage of CX Ray is going to be missed and if a standard DB gives it any extra strength it will be worth it.
    Thanks! No, no real advantage to the Cx-Ray there, bang for buck.

  7. #32
    Senior Member Trucker Dan's Avatar
    Join Date
    Aug 2008
    Posts
    713
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Use dt aerolites if money isn't an issue.

  8. #33
    Senior Member
    Join Date
    Jun 2007
    Location
    Haunchyville
    Posts
    6,231
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Trucker Dan View Post
    Use dt aerolites if money isn't an issue.
    If money isn't an issue he should get a rear wheel with more spokes.

  9. #34
    Senior Member
    Join Date
    Apr 2010
    Location
    Sunnyvale, CA USA
    Posts
    3,061
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Vinokurtov View Post
    Sapim X Ray's would fit exactly what you're looking for.

    .
    Yeah! At 30 MPH they save one Watt over 1.5mm round spokes for a price premium not much over $2 per spoke which is $120 in a 28/32 set.

  10. #35
    Senior Member
    Join Date
    Apr 2010
    Location
    Sunnyvale, CA USA
    Posts
    3,061
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by kevinmcdade View Post
    I already have one wheelset built up with CX-Ray spokes and I absolutely love them. Will the CX-Ray spokes be stronger and stiffer than the DT Swiss spoke that was recommended in the first response?
    They'll be less stiff and strong.

    14/15 gauge spokes have 44% more cross-sectional area with a corresponding increase in stiffness and yield strength.

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •