Setting Caster

[Deleted member 1632]

How’s that ride up front? Looks like that’s sitting at ride height on its own weight but your spring is darn near flat. Shallow shackle angle too! I used Wilson’s formula.

Update on this now that I have been driving it around since April. Rides great on road now that it's off the bumps, same performance off-road and I doubled my uptravel to 4". Offroad I had it up to like 20 on some Harlan KY connecting trails (dirt trail with roots and softball sized rocks tossed in) and it rode and handled fine.

I used Wilson's formula on the rear, ****ed it all up and ended up eyeballing it like I did when I built the front.

 

[94toytruck]

I was going to ask what you were running. I've been getting the general consensus from the masses.....

Any more thoughts on wheelbase affecting the castor angle? The new build is going to be around 115" with steering 9's. was going to try and shoot for at least 7 degrees in the front and maybe a little less in the rear, with my pinion angles being tilted down slightly less than perpendicular to the ground.

I'll be honest, I'm pretty clueless about rear caster.

Looking back as my rig got longer I was adding caster in along the way. I'm not sure if it's a coincidence or not though. IIRC I'm 113wb and 8° caster in front and it works mint.

 

[Boomtacoma01]

I'll be honest, I'm pretty clueless about rear caster.

Looking back as my rig got longer I was adding caster in along the way. I'm not sure if it's a coincidence or not though. IIRC I'm 113wb and 8° caster in front and it works mint.

Cool. I was going to shoot for 7-8 in the front and around 4-5 in the rear on the new axles.

 

[chaplinfj60]

So here's my set up. 8 degrees on pinion. And looks like 6 on knuckles. And that is leaning the knuckle toward the chassis. Rear steer.

Is this too much. Just right. Or won't make a diff. The thought process here says go zero on knuckles and 8 pinion so IAM not driving over the tire on lock.

Thoughts.

 

[Hooligan]

I like your idea of having two angle meters so you don’t have to move them.

Super lame question, where is the caster measured from, like what flat spot on the C? Where the steering arm mounts?

On the overhead view of driver side, do I put angle finder where steering arm bolt holes are?

Does the steering arm need to be removed, or is flat also?

 

[[memphis]]

I like your idea of having two angle meters so you don’t have to move them.

Super lame question, where is the caster measured from, like what flat spot on the C? Where the steering arm mounts?

On the overhead view of driver side, do I put angle finder where steering arm bolt holes are?

Does the steering arm need to be removed, or is flat also?

Ideally you’d be measuring it without the upper ball joint installed for best results referencing the inner C. If the ball joint is worn that could cause some issues with your reading

 

[Hooligan]

Ideally you’d be measuring it without the upper ball joint installed for best results referencing the inner C. If the ball joint is worn that could cause some issues with your reading

Ahhh, so try to find a flat surface on the inner C. If that is best, then what is second best location to measure from?

 

[xr-nut]

bumped from a google search on caster angle for my straight axle. austin would be happy his place is very near the top in the search.