Originally Posted by
bkspeedo
Rear Caster - used to adjust wheelbase, no other effect that i'm aware of.
Rear Bump steer - used to increase or reduce rear toe as the car leans into the corner. I've played with this a little but not enough to say it's beneficial setting. If the link is angled upwards it increases tow in as the arm lifts, link flat less to no toe in change in on arm rise, angled down decreases toe on arm rise.
Reactive Caster in the front - same theory as 12th scale reactive caster. As the arm lefts caster will be removed. Info from 12th scale setup guide.
-Increase the angle – Make the car react quicker & offer more steering.
-Decrease the angle – make the car easier to drive smoothly into corners.
I personally like this setting and use it on both my cars, gives the car more overall steering through out the entire turn.
I don't know if I "buy" the rear caster only effects wheelbase. I'm pretty sure it effects camber as the car squats. With all of the adjustments on this line of cars -- I just keep rear caster at 0.
I'm a HUGE FAN of the rear bump steer adjustment. Adding more shims between the am23 and ball stud frees up the car in the corners. I much prefer to make that adjustment vs reducing static toe.
Thankfully there are a lot more Awesomatix drivers now -- probably nearly 100 more in the USA -- so as people try things hopefully they will post up here.