CV's Vs U joints

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?

 

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.

 

That link was actually super informative haha thanks!