Front drive shaft vibration

[grimmjeeper]

This one? That has a double-cardan on one end and a single-cardan on the other.

The double-cardan is just two single cardan joints... so there are essentially three cardan joints in this shaft. Cardan joints will be out of phase if not installed in pairs... The center of the double-cardan is out of phase, but the entire joint is constant velocity due to the joints being phased correctly.

It's a custom shaft, not on their website. You have to call them and ask for it.

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[JAY1941]

Acceleration and deceleration will change your pinion angle slightly (unless your upper or lower arms are loose, which would cause even more movement). I think accelerating and decelerating could be causing a 1 to 3 degree shift in your pinion angle. Maybe just enough to throw a vibration. Just my guess.

I’ll look into this just in case

thank you

 

[Thegame77]

Having the same issue. What was the solution. Thanks

 

[roaniecowpony]

Having the same issue. What was the solution. Thanks

I see a lot of people setting the caster angle by rotating the front axle and disregarding the pinion angle. That's not a problem in 2 Hi, since the FAD (if you didn't eliminate it) should prevent pinion rotation. But in 4Hi, pinion angles start to matter as speed increases.

 

[58Willys]

Are your front and rear tires equally worn, and set at same pressure?

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