Originally Posted by NINER

Rotational velocity changes with u-joints in the same direction. Hence the the "constant velocity". Torque is constant and doesn't change directions unless you put it in reverse. But if the vehicle is designed with proper drive line angles it shouldn't matter one bit. PS a "CV" joint is just 2 u-joints. I was talking more about IFS (CV shaft driven) versus SFA.

http://en.wikipedia.org/wiki/Universal_joint

Double Cardan Shaft

Universal joints in a driveshaft


A configuration known as a double Cardan joint drive shaft partially overcomes the problem of jerky rotation. In this configuration, two U-joints are utilised where the second U-joint is phased in relation to the first U-joint in order to cancel the changing angular velocity, and an intermediate shaft connects the two U-joints. In this configuration, the assembly will result in an almost constant velocity, provided both the driving and the driven shaft are parallel and the two universal joints are correctly aligned with each other - usually 90°. This assembly is commonly employed in rear wheel drive vehicles, where it is known as a drive shaft or propeller (prop) shaft.
Even when the driving and driven shafts are parallel, if 0°, oscillating moments are applied to the three shafts as they rotate. These tend to bend them in a direction perpendicular to the common plane of the shafts. This applies forces to the support bearings and can cause "launch shudder" in rear wheel drive vehicles.[1] The intermediate shaft will also maintain a sinusoidal angular velocity, which contributes to vibration and stresses.

[edit] Double Cardan Joint

Main article: Constant-velocity joint#Double cardan
A double cardan joint consists of two Hookes joints mounted back to back, with no intermediate shaft. The second UJ cancels the velocity errors introduced by the single Hookes joint, and so they act as a CV joint.

Originally Posted by MikeM

i would have liked to get it in the woods too, while you were dirty and sweaty

Originally Posted by old man roger

cv joints are stronger and better then ujoints but the problem is auto manufacturers want every thing as small and as light as possible so they put the smallest cv joint in that they can get away with

Originally Posted by old man roger

heres a cool animation

Originally Posted by MikeM

she complains about her vag hurting lately

Originally Posted by MikeM

hes ok, bike isnt. yup, squid move

Originally Posted by skillz954

so how much damage did he do to the bike.....still gonna fix it??

Originally Posted by becky

i was constipated!!!!! oh and saturday i cut myself shaving. the past two nights have made up for it or at least should have. just wait until you get home...you're going to get it good. just make sure you wash your ***** first

Originally Posted by skillz954

sounds like her problem......

Originally Posted by becky

i was hot, dirty, and sweaty. that doesn't turn me on.

Originally Posted by skillz954

That's the Becky Bitchface I know and Love!!

Originally Posted by skillz954

It's not all about you.....bend over and grab a tree......be done in a minute!!

Originally Posted by becky

shut your big gay face up!

Originally Posted by old man roger

becky im sorry but your new avatar reminds me of this...lol




























http://www.o-yo.us/DS_old/humor/Brain.gif

Originally Posted by becky

you are totally right...thats why when i had a big rock in my rectum/intestine i would still put out...regardless of the pain

Originally Posted by skillz954

HA HA HA hows the vagina cut?? Must be tough shaving those curtains.....LOL

Originally Posted by old man roger

what no hate for this post ?