Craig B Posted June 13, 2016 Report Share Posted June 13, 2016 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. Quote Link to comment Share on other sites More sharing options...
mhoksch Posted June 13, 2016 Report Share Posted June 13, 2016 Nice write up with instructions on how to measure. http://www.lsracing.com/img/Guide_21.pdf Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted June 13, 2016 Report Share Posted June 13, 2016 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. Quote Link to comment Share on other sites More sharing options...
JTmachining Posted June 13, 2016 Report Share Posted June 13, 2016 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 1 Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted June 13, 2016 Report Share Posted June 13, 2016 Yup, hill shooters and drag racers want as much positive caster as possible for high speed straight line stability. 1 Quote Link to comment Share on other sites More sharing options...
JTmachining Posted June 13, 2016 Report Share Posted June 13, 2016 Yup, hill shooters and drag racers want as much positive caster as possible for high speed straight line stability.I like for anything Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted June 13, 2016 Report Share Posted June 13, 2016 This link adds more info. http://myatvblog.com/how-to/atv-suspension-unleashed-easy-guide-precisely-setting-suspension/ Quote Link to comment Share on other sites More sharing options...
Craig B Posted June 14, 2016 Author Report Share Posted June 14, 2016 Thanks to all that replied. Think I will shoot for 6 degrees of caster. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted June 14, 2016 Report Share Posted June 14, 2016 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. Quote Link to comment Share on other sites More sharing options...
elconor Posted June 14, 2016 Report Share Posted June 14, 2016 6-8 is ideal. 10 is a bit extreme unless going just straight Quote Link to comment Share on other sites More sharing options...
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