[video] Driveshaft Angle and Phasing
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[video] Driveshaft Angle and Phasing
Oil Producer
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Racer
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From: South NewJersey
I had no idea how important phasing was, I have had other vehicles that had some drive train wobble issues now I wonder. My question now is, if out of "phase" how would you go about getting it back? After looking at the end of the video where they show "in phase" the universals don't appear to be lined up or tuned 180 deg. Just wondering
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Team Owner
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From: Boston, Dallas, Detroit, SoCal, back to Boston MA
I had no idea how important phasing was, I have had other vehicles that had some drive train wobble issues now I wonder. My question now is, if out of "phase" how would you go about getting it back? After looking at the end of the video where they show "in phase" the universals don't appear to be lined up or tuned 180 deg. Just wondering
let's you put them together out of phase
our parts area all fixed,
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From: SCMR Rat Pack'r Charter Member..Great Bend KS
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From: Park City Utah
In short, changing U-joints doesn't change the joint phasing in a drive shaft.
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From: Glenbeulah Wi
Still don't need to mark it. The phasing that they're talking about would only be affected if you cut the yoke off the drive shaft, and welded it or a new one back on in a different orientation. They simulated that in the vid by having a yoke that was not welded on that shaft, and held by a threaded retainer. They loosened that retainer and moved the yoke on the shaft -something that is impossible for you or I to do w/o cutting/welding of the shaft and yokes.
In short, changing U-joints doesn't change the joint phasing in a drive shaft.
In short, changing U-joints doesn't change the joint phasing in a drive shaft.
Melting Slicks
Joined: Feb 2003
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From: Saskatoon Sask.
Still don't need to mark it. The phasing that they're talking about would only be affected if you cut the yoke off the drive shaft, and welded it or a new one back on in a different orientation. They simulated that in the vid by having a yoke that was not welded on that shaft, and held by a threaded retainer. They loosened that retainer and moved the yoke on the shaft -something that is impossible for you or I to do w/o cutting/welding of the shaft and yokes.
In short, changing U-joints doesn't change the joint phasing in a drive shaft.
In short, changing U-joints doesn't change the joint phasing in a drive shaft.
Oil Producer
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I have same question as arbee.
plus:
1. if you slightly lowered the tranny and engine using a jack (to say, swap a tranny dipstick tube grommet) how do you know exactly what the right "level" to return the tranny/engine to? The c-beam technically sandwiches it all and should hold it mote or less level but if we are out a half inch does this cause problem? Is the answer that you know its level when you can light the cbeam bolts up and get them through the tailhousing and rear diff?
2. Also, you should mark the rear pinion nut when you remove the rear u joint coupler thingy right? i marked where it was, then when i replaced the pinion seal i kept yoinking until it was lingned up. too serious torque to get it lined up.
plus:
1. if you slightly lowered the tranny and engine using a jack (to say, swap a tranny dipstick tube grommet) how do you know exactly what the right "level" to return the tranny/engine to? The c-beam technically sandwiches it all and should hold it mote or less level but if we are out a half inch does this cause problem? Is the answer that you know its level when you can light the cbeam bolts up and get them through the tailhousing and rear diff?
2. Also, you should mark the rear pinion nut when you remove the rear u joint coupler thingy right? i marked where it was, then when i replaced the pinion seal i kept yoinking until it was lingned up. too serious torque to get it lined up.
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 30,856
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From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 30,856
Likes: 293
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
I have same question as arbee.
plus:
1. if you slightly lowered the tranny and engine using a jack (to say, swap a tranny dipstick tube grommet) how do you know exactly what the right "level" to return the tranny/engine to? The c-beam technically sandwiches it all and should hold it mote or less level but if we are out a half inch does this cause problem? Is the answer that you know its level when you can light the cbeam bolts up and get them through the tailhousing and rear diff?
2. Also, you should mark the rear pinion nut when you remove the rear u joint coupler thingy right? i marked where it was, then when i replaced the pinion seal i kept yoinking until it was lingned up. too serious torque to get it lined up.
plus:
1. if you slightly lowered the tranny and engine using a jack (to say, swap a tranny dipstick tube grommet) how do you know exactly what the right "level" to return the tranny/engine to? The c-beam technically sandwiches it all and should hold it mote or less level but if we are out a half inch does this cause problem? Is the answer that you know its level when you can light the cbeam bolts up and get them through the tailhousing and rear diff?
2. Also, you should mark the rear pinion nut when you remove the rear u joint coupler thingy right? i marked where it was, then when i replaced the pinion seal i kept yoinking until it was lingned up. too serious torque to get it lined up.
Team Owner
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From: Park City Utah
Le Mans Master
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From: Las Vegas - Just stop perpetuating myths please.
Wow phasing the driveshaft. Never knew of it. I always knew how important getting the input and output parallel is. I wonder how many driveline shops know 'bout phasing?
Team Owner
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From: Park City Utah
Le Mans Master
Joined: Oct 2002
Posts: 7,098
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From: Las Vegas - Just stop perpetuating myths please.
Just a note to share here, i see the newer monster trucks are using chain to transfer output to the lower chassis to all the wheels. Not to long ago the monster trucks had huge d/s angles. I got to a pinion light up white hot during a night event. Last trucks i saw used like 6' of chain from the trans output down to the transfer case that sits nearly wheel centerline level.
