Deep rim clinchers.

ara3791
ara3791 Posts: 378
edited May 2014 in Road buying advice
I'm looking to get a set of deep rim clinchers and have perhaps narrowed down the choice to either:

Mavic Cosmic Carbone SLS or Planet X CT45

I'd be interested in people's experience comments and recommendations. I currently ride fulcrum racing 3's and 5's on my two bikes.

Cheers.

Comments

  • sloppyschleckonds
    sloppyschleckonds Posts: 8,019
    ara3791 wrote:
    I'm looking to get a set of deep rim clinchers

    Y?
    I'm sorry you don't believe in miracles
  • littledove44
    littledove44 Posts: 871
    SloppySchleckonds wrote:
    ara3791 wrote:
    I'm looking to get a set of deep rim clinchers

    Y?
    Y not?
  • mallorcajeff
    mallorcajeff Posts: 1,489
    Ive had fulcrum 3 and cosmics and planet x. If i bought either again i would probably go for the cosmics. They are a nice wheel but probably overpriced for what they are. Basically a ksyrium with a fairing. They felt slow to get going but once up to speed maybe marginally quicker but probably just your mind thinking your quicker. I also have a read disc and a front 88 which is a lot quicker than standard rims but i never felt 50s made much difference.

    Most people buy them for the looks. If your in that camp the mavics do look good. Value wise the planet x are good. Ive never broken any spokes on the tree sets of planet x, but have broken two sets of cosmics, a fulcrum three, sram s80,s, but never a planet x wheels. Very understated for what is a good wheel for the money.

    If it was my money get some secondhand durace c50s
  • cycleclinic
    cycleclinic Posts: 6,865
    Fine for competition for general riding though you have wheels that do the job.

    I am not sure how aero the mavic actually are. traditional V shape rim that is "narrow". You would probably get a similarly aero wheelset with the wider Kinlin XC-279 or Pacenti SL23 and spend alot less too.
    http://www.thecycleclinic.co.uk -wheel building and other stuff.
  • ugo.santalucia
    ugo.santalucia Posts: 28,310
    thecycleclinic wrote:
    I am not sure how aero the mavic actually are. traditional V shape rim that is "narrow". You would probably get a similarly aero wheelset with the wider Kinlin XC-279 or Pacenti SL23 and spend alot less too.

    Not true. A deep rim is a deep rim and has a lower drag than a shallower rim, regardless of the shape. Wide toroidal rims have better handling in cross winds and offer a marginal aero gain over traditional V shaped rims, but neither the Pacenti nor the Kinlin you mention has any of that. The FLO 30 on the other hand...
    left the forum March 2023
  • cycleclinic
    cycleclinic Posts: 6,865
    Not seeing a wind tunnel data it is difficult to prove one way or the other although on reflection ugo I am inclined to agree with you. The deeper rim will give a shorter spoke which reduces it speed that of course may make them more aerodynamic by itself. Difficult to tell exactly how much difference it all makes really. The Flo 30 does look good though.
    http://www.thecycleclinic.co.uk -wheel building and other stuff.
  • cycleclinic
    cycleclinic Posts: 6,865
    Well here is some data a few years out of date but up given the same test conditions. Some shallow rimmed wheels have similar aero properties up 10 degree yaw angle as some aero wheels with deeper rims.
    http://www.aeroweenie.com/assets/img/da ... wheels.png
    http://www.aeroweenie.com/assets/img/da ... 1-test.png


    so maybe I was not that wrong after all.
    http://www.thecycleclinic.co.uk -wheel building and other stuff.
  • Monty Dog
    Monty Dog Posts: 20,614
    Having rubbish aerodynamics and a harsh ride doesn't appear to put people off Mavic Ksyrium SLs, plus the fact that after 5 years if you need spares they're only fit for trash due to Mavic's spares policy :lol:

    I'm particularly impressed by the robustness of USE's carbon clincher rim having inspected one that was crashed during a sprint where one bead was abraded directly by the tarmac due to a deflated tyre - there was no gel-coat left, but the rim was still structurally sound and rideable.
    Make mine an Italian, with Campagnolo on the side..
  • ugo.santalucia
    ugo.santalucia Posts: 28,310
    Monty Dog wrote:
    I'm particularly impressed by the robustness of USE's carbon clincher rim having inspected one that was crashed during a sprint where one bead was abraded directly by the tarmac due to a deflated tyre - there was no gel-coat left, but the rim was still structurally sound and rideable.

    Many carbon clinchers are structurally oxen... they have been designed to withstand pressure, which is not something carbon does well and as such they are pretty beefed up (just to stay in the cattle theme).
    I did write on my blog about bull-type rims... :wink:

    http://paolocoppo.drupalgardens.com/con ... erspective
    left the forum March 2023

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