Caster adjustment?

[Craig B]

Does anyone know of a tool available for ATV front end alignment? Would like to set caster on my Fireball A-arms. Toe and camber are not a problem. How much caster should I be looking to run on a trail/ play bike?? Thanks.

[mhoksch]

Nice write up with instructions on how to measure. http://www.lsracing.com/img/Guide_21.pdf

 

 

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[Strm Trpr]

I used ^^^ same exact write up.

 

I made a tool from 1" sq steel bar as long as the opposing faces of the knuckle are from one another.

Drilled a hole on one end of the bar centered and about the same size as the hole in the knuckle where the ball joint seats.

Then on the opposite side I drilled the same hole centered.

I then fixtured the part held by the holes and faced all four sides parallel to the axis of the holes.

With my Fireball LT a-arms mounted to the frame I inserted both ball joints into the holes and held them tight with a soft jawed clamp.

Then I used a $30 digital angle finder from Harbor Freight to set caster.

I set my caster at 6*.

Be prepared to need a steering stabilizer if you go with 6* or less.

[JTmachining]

I like a lot of caster on ev thing. There's diff ways to do it including posted ideas. As long as u understand how to measure caster ur good. Also keep in mind to have set ride height when measuring caster

[Strm Trpr]

Yup, hill shooters and drag racers want as much positive caster as possible for high speed straight line stability.

[JTmachining]

Yup, hill shooters and drag racers want as much positive caster as possible for high speed straight line stability.

I like for anything

[Strm Trpr]

This link adds more info.

http://myatvblog.com/how-to/atv-suspension-unleashed-easy-guide-precisely-setting-suspension/

[Craig B]

Thanks to all that replied. Think I will shoot for 6 degrees of caster.

[sheerider11]

Thanks to all that replied. Think I will shoot for 6 degrees of caster.

Where we ride more is better. The whoops can and will throw you all over the trails.

You also have an extremely fast bike.

I think 6°is a good number.

[elconor]

6-8 is ideal. 10 is a bit extreme unless going just straight