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  1. #51
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    Quote Originally Posted by Kirk Pacenti View Post
    In my opinion, 175-180 is the limit for any 24h rear wheel.

    We have had too few failures to draw any meaningful conclusions about lacing patterns as they might relate to rim failures.

    Cheers,
    KP
    I'm around 81kgs and been running Pacenti sl23s with 20/24 spokes (radial front two cross rear), Sapim spoke washers, Novatec hubs and CX ray spokes since August last year - including 1300w Max efforts.

    I've trued the rear wheel once. Never had to touch a spoke on the front.

  2. #52
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    Another one to add to the pile

    Hey - found this thread, have had the same issue

    It's a 24h rear, and I weight just under 70Kgs (less than 155 pounds), wouldn't have thought that was the problem. Recently had the wheel trued by a mechanic.

    I bought the rim April 2014, but had issues getting the hub + spokes, think it was August before it was built - so less than a year on the road.

    Pacenti rim cracks-cracked_pacenti.jpg

  3. #53
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    Quote Originally Posted by nealio View Post
    Hey - found this thread, have had the same issue

    It's a 24h rear, and I weight just under 70Kgs (less than 155 pounds), wouldn't have thought that was the problem. Recently had the wheel trued by a mechanic.

    I bought the rim April 2014, but had issues getting the hub + spokes, think it was August before it was built - so less than a year on the road.

    Click image for larger version. 

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    My shop warranteed mine.

  4. #54
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    I emailed the shop yesterday - waiting to hear back from them

  5. #55
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    Quote Originally Posted by nealio View Post
    I emailed the shop yesterday - waiting to hear back from them
    Mine looked very similar. So dogs another friend's.

  6. #56
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    Add another to the list. 3 drive side, 2 trailing and one leading (the worst of the bunch).

    I bought these wheels second hand so I don't have all of the details of the build. I do know they were built by someone who has a lot of wheel building experience. Not fair for me to try and say what's at fault with so many unknowns, so I guess add this to the list of reasons to make sure the tension is never adjusted beyond the recommendation, especially when someone else is making adjustments after the fact.






  7. #57
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    Quote Originally Posted by rlb81 View Post
    Add another to the list. 3 drive side, 2 trailing and one leading (the worst of the bunch).

    I bought these wheels second hand so I don't have all of the details of the build. I do know they were built by someone who has a lot of wheel building experience. Not fair for me to try and say what's at fault with so many unknowns, so I guess add this to the list of reasons to make sure the tension is never adjusted beyond the recommendation, especially when someone else is making adjustments after the fact.





    I had the same thing happen...twice to a v1 rim. 20/24 Powertap G3 rear hub. First failure no washers, all drive side cracked (scary!), then rebuilt with a warrantied rim with washers, about 1500 miles later it failed again but only 3 spokes. Kirk has given great service and now has a v2 rim on it's way to me. I vary 165 - 180lbs and can top out 1600 watts. I used them for both training and racing.

    I have a good chunk of change tied up in my 24h powertap so I'm hoping the v2 rim is good to go now.

  8. #58
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    Quote Originally Posted by wrxg33k View Post
    I had the same thing happen...twice to a v1 rim.
    How many miles on the first one? Is the front a SL23 as well?

  9. #59
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    Front is SL23 with a velocity race hub, 20h. No issues. Stays true.

    There was probably 3-5k miles on the first v1 failure, significantly less miles on the second failure, probably around 1500 or so.

  10. #60
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    Interesting that the washers didn't seem to help.

    Who built them?

  11. #61
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    LBS that builds lots of wheels.

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