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Old 05-15-2017, 07:38 AM   #28
Keith Seymore
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Join Date: May 2009
Location: Motor City
Posts: 9,142
Re: Checking Driveling Vibration & Calculating It.

Quote:
Originally Posted by Port&PolishMan View Post
Also Found 1 Bad Tire and Rim - Inside on Dual Shot .. 5/8 inch - side to side
1/4 Up & Down . . that certainly does help ..
Can you remind me what type of vehicle this is? Do I remember you saying this was a dump truck?

And can you also remind me what the original complaint was (ie, bad vibration at speed)?

Quote:
Originally Posted by Port&PolishMan View Post
Running down the road I'd get...

1st Operating 1.55
2nd Operating 1.10
3rd. Angle 1.25 Degree - which would allow approx .65 Degree Wrap Up .. Operating Angle of 1.75 Degrees
Those angles look better. With a one-ton vehicle you may not get very much spring wrap at all.

Quote:
Originally Posted by Port&PolishMan View Post
2. 1st Drive Shaft Driven - Trig. Out the Angle to be 4.854 Degrees .
3. 2 sec. Drive Shaft Driven Trig. Angle to be 3.75
Why are you "trig'ing" these out when they can be measured directly?

Quote:
Originally Posted by Port&PolishMan View Post
Rear Diff. Total = 3 Degrees Down.
4. Rear Diff. Total = 3 Degrees Down.
"Down" relative to what? The rear shaft or the ground?

K
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