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#26 |
Registered User
Join Date: Jun 2014
Location: illinois
Posts: 72
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Re: drive shaft alignment problems
Lower 5 inches in rear eibach springs front eibach 2 inch springs 2 1/2 drop spindles
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#27 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: drive shaft alignment problems
Quote:
The reason is because each time the u joint passes it maximum articulation it creates a disturbance. The rotation creates a disurbance that is sinusoidal in shape. If the two u joints are at maximum articulation in the same direction then the amplitudes are additive (they double). If the joints are articulating in the opposite direction then the amplitudes cancel out and the net effect is zero. I can't draw pics here but I will post the attached for reference. http://67-72chevytrucks.com/vboard/s...d.php?t=522180 Figure 4-20 Captain69 - you may want to peruse/memorize/become very familiar with the attached link. K
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 08-09-2014 at 10:56 AM. |
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#28 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: drive shaft alignment problems
It is.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#29 | |
Registered User
Join Date: Jun 2014
Location: illinois
Posts: 72
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Re: drive shaft alignment problems
Quote:
Great article thank you. |
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#30 |
Registered User
Join Date: Nov 2010
Location: Grand Terrace, Ca.
Posts: 1,607
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Re: drive shaft alignment problems
What was wrong with the stock cross member? I have a '69 C-10 which was a small block/TH350 truck w/low hump cab. It is now a BB 502 w/4L80E using the stock automatic cross member and I have plenty of room between the floor and trans.
I too think the trans yolk needs to be farther in the trans. Oh...ya gotta' love Keith! |
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