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Rear driveshaft questions
PostPosted: Tue Apr 16, 2013 8:46 am Reply with quote
sgtbriangreen
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Reg cab wheelbase, flat belly, dual cases, pinion pointed at the output, double cardan joint at top, regular ujoint at the pinion, stock springs, 1.5" longer shakle.

Built the shaft last night and put it in. Seems like I have only 2" of downtravel before the DC will bind. I didnt clearance the DC, but dont think it will help enough to get the extra travel I need.

I am planning on getting a shaft professionaly built (Olivers maybe), but would like to be able to use this one until I can get one built.

Have any of yall had problems with the DC joint not having enough travel? Any other options?

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PostPosted: Tue Apr 16, 2013 8:54 am Reply with quote
DAWGTOY
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the only dc joint on mine is on the front.
the rear has 2 regular u joints.

i've got another driveshaft if ya need it.

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PostPosted: Tue Apr 16, 2013 8:59 am Reply with quote
5keepers
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I have the exact same setup as you except for extended cab. Same drive shaft and no issues. Hmm

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PostPosted: Tue Apr 16, 2013 9:33 am Reply with quote
Cumminsdzl
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Mine was like Robert described. Double up front and singles on the rear shaft. Ran really, really smooth for a square shaft. Mine was similar wheelbase as yours and had factory springs with longer shackles just like you said.

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PostPosted: Tue Apr 16, 2013 9:34 am Reply with quote
sgtbriangreen
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I still have the stock uncut front and rear driveshaft. I had a driveshaft from an auto that was too short for single case use that I cut up to build this one.

I have some sch 40 pipe that will fit the ends perfectly that I will use to make the longer front shaft.

I dont think that I will be able to use a regular 2 ujoint shaft because I would have to tilt my pinion down to get the angles right and that would not be good.

I still have some work to do before I can drive it down the road to see how it feels. I think I got it pretty straight and true.

I will probably get one professionally built since this truck sees mostly road use.

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PostPosted: Tue Apr 16, 2013 9:37 am Reply with quote
Cumminsdzl
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I know they say that single joints on both ends need to have the pinion and the tcase output pointed exactly the same to work right, but from experience, it doesnt have to be that way. My pinion was pointed way up and the single joints on each end worked perfect. Thats how my truck was stock too.....

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PostPosted: Tue Apr 16, 2013 9:42 am Reply with quote
sgtbriangreen
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I had BAD vibrations with flat belly, single case, stock pinion angle. I can only imagine it would get worse with an extra case. I may build a regular ujoint driveshaft just to see before I spend $$ on getting one built. Just gotta see how true I get them when driving down the road.

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PostPosted: Tue Apr 16, 2013 10:35 am Reply with quote
Cumminsdzl
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Its strange how that works out....different results using basically the same parts.

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Rear driveshaft questions
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