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Ujoint max angle

1979jimmy350

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I am starting to draw up a rough idea of drive shaft for my truck, the big question is what is the max angle i am going to get out of various ujoints, i am torn between 1480 and 1550 for my rear drive shaft. The charts that i have been able to find only go up to a 1410 ujoint. No one where i work has any idea on the angles that they are able to run. Does any one here know?
 
I am starting to draw up a rough idea of drive shaft for my truck, the big question is what is the max angle i am going to get out of various ujoints, i am torn between 1480 and 1550 for my rear drive shaft. The charts that i have been able to find only go up to a 1410 ujoint. No one where i work has any idea on the angles that they are able to run. Does any one here know?

why do you feel like you need so much angle? 1410 is overkill in the rear and and fairly adequate in the front with a flexy susp. some overkill is good...too much just starts adding weight and being counterproductive.
 
Why? I know your truck doesn't need that much angle or strength at the driveshaft.


Your front D60 uses the same 1480 joint and sees 4.11 times more torque than either driveshaft. Trust me, you'll never break a 1410 joint at your driveshaft (unless the straps or u-bolts come loose, but that will break any joint).
 
the shafts are being built for free where i work AAM so i figured why not go as big as i can, some of the dodge 1tons use the 1550 in there rear driveshaft
 
Its still unnecessary weight and extra large diameter tubes IMO but; you work at AAM and can't get this info? The maximum angle is largely based on which yokes you use.

I've looked through the Spicer book for this stuff before but AAM will be a little different.
 

max torque maybe 350 ft/lbs? Versus latest CTD making almost double that at half the rpm.

Max you'd ever tow behind a K5 (assuming you were of sound mind) maybe 6000 lbs? Dodge with the latest CTD rated to tow 18K, 20K?

Even 1410 is big overkill (and max out at 28 degrees) 1480's or 1550 make it look like you're compensating...:D

Rene
 
max torque maybe 350 ft/lbs? Versus latest CTD making almost double that at half the rpm.

Max you'd ever tow behind a K5 (assuming you were of sound mind) maybe 6000 lbs? Dodge with the latest CTD rated to tow 18K, 20K?

Even 1410 is big overkill (and max out at 28 degrees) 1480's or 1550 make it look like you're compensating...:D

Rene


Well the 350 is not staying in there long, i am preparing a LS based motor and will have a doubler so in low low first gear the ujoints will see torque values around 13,000 ft-lb min, plus the fact that i know they can handle more angle just not how much, so i may be able to get away from using a double cardian in the rear of the truck
 
i prefer the u-joints to be the weak points. they're cheaper to replace and easier to carry more spares of than a driveshaft or yoke. just my opinion. any time you beef something up, the next weakest part is what will probably break.
 
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i prefer the u-joints to be the weak points. their cheaper to replace and easier to carry more spares of than a driveshaft or yoke. just my opinion. any time you beef something up, the next weakest part is what will probably break.


I agree
 
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