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  1. #1
    Speed Freak cordia75's Avatar
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    Shimano R500 vs Mavic CXP33 w/ Ultegra hubs

    Hi,

    Which of these 2 wheelsets would be be better in terms of speed and weight?

    thanks.

  2. #2
    Aluminium Crusader :-)
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    "theoretically", the R500s should be faster, mainly because they have less spokes, but if they're not as stiff as CXP33s they may then feel slower. Either way, I doubt you'd notice any difference.

    I'd be more concerned about durability. This is obviously anecdotal, but I know a few guys who had problems with the R500s continually going out of true, and spokes breaking. These guys have been put off Shimano wheels for ever!

    The r500s also get pretty average reviews: http://www.roadbikereview.com/cat/wh...5_2490crx.aspx
    Rating average: 2.73 out of 5


    In other words, I'd definitely get the Mavics

    Rating average for the CXP33 is 4.43 out 5, which is quite good for rims or wheels on Road Bike Review: http://www.roadbikereview.com/cat/wh...9_2488crx.aspx

  3. #3
    Speed Freak cordia75's Avatar
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    i see, thanks.

    i have read the reviews on roadbikereview.com. The R500s is maybe lighter(?) while the Mavic ones are stronger and stiffer, but most likely heavier(?). is that it?

  4. #4
    Aluminium Crusader :-)
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    yeah, basically, but I'd add "less reliable" for the Shimanos. Also, advertised wheel weights are dubious at best, and often don't inlcude skewers, so the Shimanos would be more like 2000g with skewers. With straight guage DT Champion spokes, the Mavics would be about 2100g with skewers. Either way, I'd be amazed if the Shimanos were more than 200g lighter, which is nothing
    Last edited by 531Aussie; 05-13-07 at 11:07 AM.

  5. #5
    Speed Freak cordia75's Avatar
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    oh ok. How about the hubs? The R500 hubs vs Ultegra hubs on the Mavic rims? The R500 reviews talk more about the rim/spokes, nothing much about the R500 hubs.

  6. #6
    Aluminium Crusader :-)
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    Quote Originally Posted by cordia75
    oh ok. How about the hubs? The R500 hubs vs Ultegra hubs on the Mavic rims? The R500 reviews talk more about the rim/spokes, nothing much about the R500 hubs.
    I'm not 100% sure about the R500 hubs, to be honest, but I have Ultegra hubs with thousands of miles on them and they're still ok.

  7. #7
    Senior Member
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    The rim weights are probably the most important weights since they are at the outside of the circle. Cycling plus in the UK deconstructs the wheels and quotes rim weights separately. In my opinion, factory wheels should show the weights of the components. I expect that the rim weights of the two you compared are similar. You could easily drop the weight of a Mavic cxp-33 wheelset by choosing lighter hubs. I'm sure Ultegra would be a great choice.

  8. #8
    Speed Freak cordia75's Avatar
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    Ok. The general consensus is that the Mavic w/ Ultegra should be better.

    Thanks very much. You guys have been a great help!

  9. #9
    drink slinger
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    Quote Originally Posted by cordia75
    Ok. The general consensus is that the Mavic w/ Ultegra should be better.

    Thanks very much. You guys have been a great help!
    I think R500s are supposed to be "Tiagra-level", no? With 550/560 being 105-level and 660 being ultegra?

    If you read the Clydesdale forum, Mavic Open Pro/Ultegras are almost always the first recommendation for a super reliable quality wheelset. I wouldn't expect much less from 33s with Ultegra.
    Five is right out!

    My build a precision truing stand on the cheap instructable

  10. #10
    Speed Freak cordia75's Avatar
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    ok, thanks

  11. #11
    Speed Freak cordia75's Avatar
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    got another question.

    supposed i mixed the wheelsets.

    The R500 seems to be more aero (less spokes and slightly lighter), while the 33x w/ Ultegra are stiffer and have the better hub.

    Can i put the front wheel as the R500, and the rear wheel as the 33s?

    I'm wondering how climbing and descending hills will be like on this configuration...

  12. #12
    I eat carbide. Psimet2001's Avatar
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    Shimano Rxxx wheelsets are total crap. They are not even in the same ballpark as a decent set of handbuilts sporting Ultegra hubs.

    The Shimano wheels have a low spoke count, but are actually very heavy. I have a set of R550s that weigh more than a set of old Mavic Open 4 CD w/ Ultegra hubs both being 32 spoke 3X.

    Go for the Mavic w/Ultegra in both front and rear. Assuming you are fairly lighter weight (sub 200) then go for the lowest spoke count configuration you can get in the front (assuming around 28). Go 32 3X in the rear. Get some DB spokes in like a 14g-15g-14g, some brass nipples and call it a day.

    In 20 years (assuming you haven't detonated the rim) you'll find they keep working their way onto your current bikes....still...

  13. #13
    Aluminium Crusader :-)
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    Quote Originally Posted by cordia75
    got another question.
    ...
    I reckon get the Mavics, then save up for some 'real' aero wheels down the track

  14. #14
    Speed Freak cordia75's Avatar
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    thanks for the advice, guys. appreciate the amount of help i'm getting here.

    I'll be mounting the Mavics tomorrow

  15. #15
    Speed Freak cordia75's Avatar
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    Just an update in appreciation of the help you guys gave me.

    I mounted the Mavic CXP33s with Michelin Pro2race tyres and wow, they roll very well. The whole ride is different now.

    Thanks for the wonderful advice, y'all.

    Cheers!

  16. #16
    Aluminium Crusader :-)
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    ^^^ yes, there's something to be said for stiff wheels with new hubs, even if they're not the lightest around

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