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CV's Vs U joints

Discussion in 'Suspension' started by rawdog, Dec 29, 2012.

  1. Dec 29, 2012 at 2:12 PM
    #1
    rawdog

    rawdog [OP] Well-Known Member

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    Steve
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    I did some searching on here and can't find a real straight answer to this question.. also wasn't quite sure where to post this but suspension is my closest guess since we don't have a driveline section.

    I have a small idea on why cv's are used instead of U Joints, but maybe you guys could clear this up for me.

    I know that CV's can be used at higher angles more effectively than U joints.. my question is, why? and is one stronger than the other? Why don't we just use U joints for everything.. cheaper, easier to maintain, etc.

    Whats the big difference here?
     
  2. Dec 29, 2012 at 5:12 PM
    #2
    P9HST2

    P9HST2 Well-Known Member

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    WeatherTech floor liners, tailgate hoseclamp, Famous Fab sliders, Brute Force Fab rear bumper, Icon "3T" suspension.
    Not sure if you're looking for a highly technical answer or just some more basic information, but both can be easily found on the web.

    This gives a good answer as to why we don't use U joints on IFS axles and says it better than I could:

    http://www.midaslink.com/east/qcv002.htm

    Either could be designed to be stronger than the other. Like you said, it's cheaper to build something with U-joints, especially for strength and when used at relatively small angles. You could also build a CV joint that's stronger than that U-joint, but that's all a moot point since the U joint can't operate at the angles we need. Imagine your front tire at full droop and turned fully in one direction, while transmitting torque. Not gonna happen with a U joint. Full turns under power are hard on straight axle rigs with U joints that don't have to deal with the up and down angles. That's why heavy duty axle replacements for them use CV joints too.
     
  3. Dec 29, 2012 at 6:04 PM
    #3
    rawdog

    rawdog [OP] Well-Known Member

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    Steve
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    2013 TRD DCSB
    That link was actually super informative haha thanks!
     
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