cutting axle "C's" and caster angle questions.

wheelen disco

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Jun 20, 2010
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rice lake Wisconsin
I've come to the conclusion I need to have a proper pinion angle, I'm tired of the vibs and constant driveshaft repair. Anybody have any idea what proper caster angle should be ? I'm not to excited to have to cut all that weld off!
 

fishEH

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Jan 26, 2009
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Lake Villa, IL
The RTE arms correct pinion, not castor. What welds are you cutting off, Josh?
Should cut have to cut and weld the arms back together.
 

wheelen disco

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Jun 20, 2010
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rice lake Wisconsin
Brett , I need to point my pinion upwards. I drive the truck at over 15mph . I can't have a positive caster angle, the only way to get the caster back on a open knuckle axle is to cut the "C's" ( the metal bit that the ball joints are mounted to and welded to the axles) and re-weld them at the proper caster angle.
 

fishEH

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Jan 26, 2009
6,930
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Lake Villa, IL
I'm not terribly familiar with geometry of the D2. Hopefully you can correct both the pinion and caster with one adjustment. I know that isn't what happens on a D1, that's why guys run modified arms and drilled swivel balls.
Good luck!
Know of any good winter wheeling spots? Last year was a bust, everything had been fenced off. :(
 

wheelen disco

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Jun 20, 2010
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rice lake Wisconsin
I'm not terribly familiar with geometry of the D2. Hopefully you can correct both the pinion and caster with one adjustment. I know that isn't what happens on a D1, that's why guys run modified arms and drilled swivel balls.
Good luck!
Know of any good winter wheeling spots? Last year was a bust, everything had been fenced off. :(

Same theory as drilling swivel balls , just a much bigger pain in the ass.
Haven't done much wheeling lately , I have been off roading on two wheels and racing RC a lot / to much....
 

Ash

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Jun 11, 2005
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Orlando, FL
Wow..now that I know what you're talking about, that's pretty shady.

Cutting and turning is a common modification in most other facets of the 4x4 world. Nothing shady or sketchy about it when done correctly.

I think factory is somewhere around 3 degrees positive if I'm not mistaken. What's your tire/wheel setup? You might want to change it from stock if you're running big meats or lots of backspacing.

-Ash
 

KyleT

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Mar 28, 2007
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Fort Worth, TEXAS
What driveshafts? I had zero issues on 3.5" and a stock shaft. All my issues began with a certain shaft and even carried over when I swappped it onto another truck that is stock.

I cut and turned the balls on my toy axles and screwed up the first housing. It is not easy without a jig and supreme patience.

I can't see doing the c's on a d2 being easy as there isn't a sleeve to keep it centered like the toy knuckle ball. Plus the axle tube is super thin. Plus they are cast so you have to weld it with pre and post heat. I would correct for pinion and just take the handling hit.


Actually I wouldn't waste the time on the rover axles.
 

Ash

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Jun 11, 2005
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Orlando, FL
Yeah, from what I'm reading it doesn't seem like a justifiable amount of work. Your setup isn't anything out of the norm and you should be able to correct your driveline vibes with a good shaft. A set of spacers or a wheel with a bit more backspacing will correct your scrub radius and make the truck handle slightly better as well. That amount of effort would be better directed towards an axle that's worth a damn.

-Ash
 

wheelen disco

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Jun 20, 2010
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rice lake Wisconsin
Kyle , one tom woods, two ground up stockers . the nuckles arent cast they seem to be forged. I am no metalurgest but they weld as good the diff's. Yes it is a big time commitment , and fzj80 axles would be the best option... To get correct pinion angle it would have -3° of caster ( top ball joint tipped forward) fuck that !
 
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wheelen disco

Well-known member
Jun 20, 2010
1,089
0
rice lake Wisconsin
Yeah, from what I'm reading it doesn't seem like a justifiable amount of work. Your setup isn't anything out of the norm and you should be able to correct your driveline vibes with a good shaft. A set of spacers or a wheel with a bit more backspacing will correct your scrub radius and make the truck handle slightly better as well. That amount of effort would be better directed towards an axle that's worth a damn.

-Ash

Scrub radous has no effect of straight line tracking...... Hell even General motors doesn't give a shit about scrub radius or even Ackerman angle for that matter for production vehicles .