double carden joints?? again

[4x4skid]

so i posted sumthing about these a long time ago, but ive now recovered from a nasty car crash and starting work on the ute again,

my question is, can the d/c join go at the diff end of the driveshaft, i have a hilux front beam in my navara and the d/c joint will bolt up to the diff but not the gearbox, so to make this easyer and cheapest id prefer it at this end, how evr if its going to be shit for some reason ill spend the time now to get it right,

cheers hayden

[krawlr]

id be fitting it at the t/case end not the pinion bud

as u said get right the fisrt time aye

[De-Ranged]

the purpose of the DC jiont, is to stop the eleptical movement generated by a UJ at angle, this causes the drive shaft to try and increase and decrease speed as it rotates, this oscilation wont be noticable (unless its very extreme ) what it will do is wear out things faster
Wheither or not it will make any differance depends on the angle of the diff if your diff is facing up toward the transfer case there will be no gain at all but if you have lifted the truck and the diff no longer pionts at the transfercase then it may help some.... but consider before you fit it, a DC joint is longer, will this extra length make the driveshaft angle at the transfer case steeper and just defeat the perpose

if your going to the cost of getting a DS made to fit it do it right and get it drilled or the flange drilled so it will fit up top and turn your pinion angle at the axle

Cheers Reece

[Cloggy_NZ]

Anyone ever tried using CV joints in the driveshaft?
I was thinking something decent as fitted to some V6 front drive cars.
The one problem I can think of is the rotational speed. These would be spinning around 4 times faster than generally designed for due to diff ratios. Might cause a problem with the lubrication.
But the upside is the ability to go through quite a large angle without any vibration. Wear might be a problem.
Has anyone tried this?
(My 1978 Sunbird I used to have years ago had a CV in the driveshaft)

[callum007]

I had double carden fitted to t/case end... beatty's drive shafts in auckland.. took them 2 goes to get it right, but good things take time

[rowinz]

My old 89 3.0L VL Commodore had a CV joint in the drive shaft. So they must be alright for power and speed. Just need to get the right one

[NJV6]

SWB Pajero's have a sealed CV in the front of the rear driveshaft which is pretty short. Std U/J for the rear.

But only on the 2.8 and 3.5 models.

NJ

[Steve_t647]

You can buy a CV based driveshaft from Australia I think they use the landcruiser CV's I think and a normal cv at the other end.

I can't find the link anymore but it is possible and the lower torque of the driveshaft (before diff ratio's) it may be fine the trick would be a boot or something to keep it greased.

[SupraLux]

my question is, can the d/c join go at the diff end of the driveshaft

Just to get back on topic - ummm... no I wouldn't. The extra weight thrashing about on the pinion will trash the diff in no time I would think. Any engineering shop should be able to make you an adaptor pretty cheaply ($100 or so) to bolt onto the gearbox output flange that the driveshaft can bolt to... thats one way to do it.

Steve

[KiwiBacon]

The best setup is CV or DC joint at each end.
You can only use a CV or DC on one end with a universal joint on the other if the universal joint stays dead straight.
If the universal joint pivots, then it introduces torsional vibration which needs another UJ at the other end with equal angle to smooth it out. If you get uni joints with unequal angles then vibrations result.

[4x4skid]

thanks every1 for the advice, hadnt even thort about a cv befor but i got this dc of an old RN46 i wrecked out a whil back so its looking cheaper to start with, there s enuf meat on the flanges to drill out the holes so will give that a go, i have a prado high pinion diff head but the ute sits at a good height so there is still going to be considerable angel, but may need to look at a cv set up if it becomes a problem, mayby im just paraniod as the old IFS drive shaft was so strait ha

apologys for my delay in checking on this my computer had been sick, cheers again