While talking to @Tyler James Inc and @eimkeith today, we were briefly discussing caster angle change throughout suspension cycle, and the benefit of having built in change in caster angle.
As you can see based on this photo from Solo Motorsports XLT kit using the stock upper and lower control arm pivot points, the castor angle increases at bump and is almost 0* at full droop. I drew some shitty lines to reflect the changes as the suspension cycles. The red lines are the paths of the "Ball Joints" and the green line is the caster angle at bump.
I've been thinking about this all day and can't come up with a great reason to purposely have less caster at droop than at bump. I'd think it would be better to have little to no change throughout suspension cycle. Or even have some increased caster angle at droop rather than decreased, so that you keep a positive caster during a front end dive.
Thoughts?
As you can see based on this photo from Solo Motorsports XLT kit using the stock upper and lower control arm pivot points, the castor angle increases at bump and is almost 0* at full droop. I drew some shitty lines to reflect the changes as the suspension cycles. The red lines are the paths of the "Ball Joints" and the green line is the caster angle at bump.
I've been thinking about this all day and can't come up with a great reason to purposely have less caster at droop than at bump. I'd think it would be better to have little to no change throughout suspension cycle. Or even have some increased caster angle at droop rather than decreased, so that you keep a positive caster during a front end dive.
Thoughts?