: Compound driveshaft angles


OX
09-06-2001, 09:32 AM
Going to be getting MOG 404 axles soon and was wondering about DS angles. I'm @ 8" susp lift right now, so I will be dropping back to 2" susp (maybe 3") to maintain overall height, so vertical angles on driveshafts will be much improved.

What I'm worried about is side angles. The mog rear diff is about 4" offset (if I recall correctly) to the pass side (not that big a deal), but the front diff is much closer to center than the usual ford HP front diff. I currrently run 1350 CV rear shaft and 1350 non-CV front. I would think I would not want to run a CV shaft since I can not get even close to overall zero angle straight into either pinion. So, should I run non-CV shafts in both ends and will the side angles be any problem??

TPIJeep
09-06-2001, 10:38 AM
I will give this one a shot but onetoncv correct me if I am way off base. I would say that the rear should probably go with single u-joints on each end, possibly 1410 series. The front you might want to use the 1350 CV up there and a large joint at the diff, I don't think that will cause much of a problem up front because how often are you going to be cruising down the road in 4wd.

Come Awn onetoncv let me know if I am even close..

Lloyd
09-06-2001, 11:25 AM
A guy from here took his jeep with a d18 tcase to Moab a few years ago and demolished his rear axle. All he could find in the area to fix it with was a d44 with centered diff, so he bolted it in and drove it. Last I knew he was still running it that way.

NoBrainR
09-06-2001, 12:08 PM
As long as the two shafts are parrallel (extend imaginary lines from both) a standard u-joint shaft that will handle the angle should work. But I wouldn't use a CV in front or rear. The thing I would be concerned about, if the front diff is that much closer to the center, and your lowering the suspension, will the diff be munching on your oil pan?

[ 09-06-2001: Message edited by: BrianR ]

OX
09-06-2001, 01:52 PM
Yeah, the headers may have to go, but if need be, I'll keep more susp lift and ditch the body lift. Just have to get non-CV shaft for the back. Thnaks for the replies

RockRover
09-06-2001, 02:00 PM
I was under the impression That mog axles had offset pinions to the left...Damn...That's why I didn't go for it in the first place. What gives?

ROCKILLER
09-06-2001, 06:14 PM
a friend of mine is using mog axles and he said that they were both centered but maybe there are different ones? I have a sammi with offset D44's and without the offset rear you tend to get more vibration.

fcfred
09-06-2001, 07:46 PM
why not switch to a landrover transfercase?
it has like a 3 pointsomthin to one low range and it's offset to the passenger side
two bonuses in one
i think they run them in discoveries and I know a guy who make an adaptor to a np435
and maybe a t-18
more expensive but hey your the one buyin mog axles <IMG SRC="smilies/biggrin.gif" border="0">

ryeguy
09-07-2001, 08:47 AM
Mog diff's are offset by 3.5-4 inches from center. Same amount F&R.

I'm running lots of lift to separate the Mog center section from my oilpan. But I intended to run 44's from the start anyway.

No worries about compound angles. If your pinion and T-case angles match to make everything parallel, then your driveshaft won't "know" it's a compound angle at all, only you.

--Rob

onetoncv
09-07-2001, 11:36 AM
lets measure the amount of off-set and see exactly what the angles added to operating angle up and down will be- then see what we have to work with- and do you care about vibrations on your rig? Jess

OX
09-07-2001, 11:45 AM
Don't care about vibes in front and would like to be as vibe free as possible on rear (as long as it's not shakin the fenders off, it's fine with me). Truck does see limited highway speeds (20-30 miles @ 60 MPH) to get to the trails. Won't know angles for a while yet, but I'll be callin ya when I do.