02-14-2003, 12:34 AM | #1 |
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Driveshaft angle
I just put in my one piece driveshaft, and it appears like there is a slight angle from the right at the rear to the left at the front. I haven't pulled a tape on it yet, but is the driveshaft supposed to be perfectly straight from side to side? The rear has lowering springs (3"), but measuring from the frame to the inner edge of the tire is about the same on both sides (within 1/4")
Thanks, Greg
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02-14-2003, 12:46 AM | #2 |
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hhmmmm how slight is this angle.... i need to look at mine... mayb your trans mission is moved to one side or your axle mayb? so not the axel. trans? what kind of mounts you have cross memeber? hows it all setup.
tweaked frame.measure frame widths all the way down and make sure its the same then measure "x"'s across symetric areas. make sure thats good. Last edited by Jackal2k9; 02-14-2003 at 12:49 AM. |
02-14-2003, 12:57 AM | #3 |
Fabricate till you "puke"
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You might check the diff , to see if the pinion is centered.....Im not sure on the older 12 bolts, but my 69 has a 75 diff(12 bolt) & it appears that the pinion is offset slightly to the right(not centered in the housing)..........crazyL
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02-14-2003, 02:47 PM | #4 |
Out of the carpool lane.
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Mine is offset as well.
I've measured from the widest point on tire to frame and aligned rearend using the adjustable tracking bar. I'm pretty sure trans and engine are aligned as well. All this leaves less space on one side of crossmember loop than the other. I only have about an inch on one side of the hole in crossmember.
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02-14-2003, 02:59 PM | #5 |
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They should all be offset slightly. Ujoints are not designed to work in a perfectly straight line, but require a little offset in both planes, but as you know, it can be exceeded. 1 deg is minimum and about 5 deg maximum out of phase.
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02-14-2003, 03:47 PM | #6 |
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That offset is normal and is EXACTLY why the vehicles were engineered with a split shaft. (that, and to ease body twist during heavy loading)
Shouldn't be a problem though. U-Joints provide flexibility for short term suspension deflection but should never be out of line more than a degree or so during steady state conditions. That is what a CV (constant velocity) joint is for like on your front wheel drive vehicles.
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02-14-2003, 03:58 PM | #7 |
aka Crusher, Crushergmc
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As long as the output shaft (trans) and the input shaft (diff) are parallel in the horizontal and vertical planes, you will be fine. Kinda what was stated before
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02-14-2003, 06:53 PM | #8 |
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I appreciate all the help. I won't worry about it.
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