Rear steer caster angle

Humpy · Jan 14, 2014

Ok I've read about 50 threads now on what to set rear steer caster angle at... I have seen answers from +/-7 and everything in between for various reasons even saw one guy said leave it at 0 cause it just don't matter he said.... What's y'all's opinion and why?

I'm very close to Weldin knuckles on this is last thing I have to decide on

Humpy · Jan 16, 2014

Bump bueller?

greenlion · Jan 16, 2014

My rig has rear steer with rockwells. Stock caster on a rockwell is about 4* IIRC. My rear axle has that plus a couple more degrees (pinion pointed up slightly). Probably 7* total in the rear. I don't think it would make any difference at trail riding speed what it was, but my rig tracks straight on the road at 75+mph FWIW.

al1tonyota · Jan 16, 2014

I would do the same as the front 7-9* helps track strait my .02

Blase · Jan 16, 2014

I just built my un tested rear steer axle at 2-3* IIRC. From the research I did when I started mast said it really doesn't matter once you go to full hydro. Add to the its a rear axle with full hydro and most say run what you want.

Jduck · Jan 16, 2014

When I did my buggy I never even gave it a thought, just set the pinion angle where it needed to be and ran it. Got up to 70-80 and didnt notice any ill effects.

tiny · Jan 17, 2014

You want 0 degrees castor on your rear steer.

Nuts · Jan 17, 2014

With full hydro does it even matter on the front or rear?

John Galbreath Jr. · Jan 17, 2014

AdamF said:
With full hydro does it even matter on the front or rear?

It matters on the front a lot. Or it is a bear to drive at speed, especially on straight pavement.

patooyee · Jan 17, 2014

Re:

Doesn't matter on rear because hydraulic valve prevents castor from doing anything.

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crawlin85cj · Jan 17, 2014

Mine is 0

Elliott · Jan 17, 2014

I've set several trail only rigs front axles on zero, it keeps the tire planted flat while turned, prob wouldn't drive at speeds for crap but they do climb better

alanevans10 · Jan 29, 2014

I just finished building my rear steer axle. I set mine at 0* so the tire would stand up straight when it is turned.

tiny · Feb 1, 2014

And that's why it DOES matter.

Elliott · Feb 2, 2014

That's a good looking foot print right there , that is the difference, if you had angle on it they would have been turned at the top. Good looking rig by tge way