Matt16

The flanges will mate up right?

Also, do you guys ever rip off the zerk for the slip yoke? Its pretty exposed if the shaft were reversed.

tc

Mine fits either way, I always put the thin end towards the rear.

Yes, my slipyoke zerk is sheared off.

RMA

Do you have a specific reason you do this , is it just easier to slide over rocks or something.

89silverpu

I believe driveshafts are supposed to go on one way and one way only....somethin axleIke was telling me about maybe he'll chime in..

anthony1

iTrader: (1)

They balanced them with it turning one way only. ....kinda like tires.

Matt16

??? 1200rpm is the same clockwise and ccw.

Matt16

The thin portion is made of thicker tubing and thus is harder to bend and dent.

AxleIke

It completely depends on what type of shaft you have.

In TC's case, he is running a ujointed, or single cardan, style rear shaft. This can be run in either direction.

In my case, I'm running a CV style, or double cardan, driveshaft. This goes one direction only. It also happens to be with the narrow end towards the back.

Depends on what type you have.

Matt16

AxleIke- your's is retubed and custom right?

tc

Yes, both of ours were retubed and shortened for the dual cases. I know mine is .090" wall, the place we had them done now does thicker, I don't know if Isaac's is 090 or the 125 he has now ... regardless, they stand up to a HELLUVA lot more abuse than stock!

AxleIke

I originally had a stock, single cardan shaft. I had that re-tubed to .125, and shortened for the dual case, and I ran the fat end at the diff.

With the new rear suspension, I converted to a 96 taco cv, and had the shaft fit with the new joint, and the same .125, and, with the cv, it now runs narrow end at the diff.

I still have my zerk fitting, but only just barely.

Matt16

You guys just treat is as disposable and back the mangled fitting out with an EZ-out or something a couple times/ year to regrease?

MudHippy

1. Uh-huh.

2. Yep, I've lost one zerk so far. Drilled and retapped it for a new one.

Sidenotes: Grease doesn't seem to stay in my slip yoke sleeve as long, so I squirt some in more a tad often than I used to(~monthly, I over-grease EVERYTHING though).

It seems to be balanced just fine, works exactly the same either way. Truthfully, I don't see how something could be balanced in only one direction of spin. Sounds a liiittle kooky to me ...sorry.

Jay351

Im with you..

My tires act the same after I cross rotate them.

Matt16

I'm pretty sure he is referring to the fact that a double cardan on the diff end and a single cardan on the t-case end would give lots of vibrations- and it would because you need single cardans to operate in pairs if you're to cancel out the vibrations.

AxleIke

Yeah, Matt16 hit the nail on the head. Its not balancing. Its the type of shaft. Single cardan shafts will run great in either direction. The grease thing you brought up is a good point! Nice. I may think about doing that more often.

If you try to run a double cardan shaft backwards, it will not feel or sound good.

You must have angular velocity conserved through the driveshaft, or you will get vibrations (generally these sound like a transfercase is going to explode).

Matt16

The reason the driveshaft can't be run backwards on AxleIke's truck for instance, is that his diff is straight in line with the driveshaft where as there is and angle between the t-case and the driveshaft. The double cardan (CV joint) cancels itself out and can make the bend, but the single cardan on its own pulses when operated at an angle. When the diff is in line with the DS, then there is no angle, and no pulse.


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