ron67fb
Founding Member
The down side to TMs and under-riders is while they can prevent axle wrap-up under acceleration, the rigid connection means they will also bind the suspension under hard braking. Caltracs work like a de-coupled torque arm and are basically disengaged under braking.
or:
http://www.cobraautomotive.com/
Neither Caltrac-style and welded under-riders are optimal for braking anyway as they're drag-oriented pieces. Caltrac just makes it more tolerable for dual-purpose cars since they're near invisible when not needed.
That's correct, however limiting axle rotation to zero is not a correct way to control axle wrap-up under braking. That's usually done with staggered shocks, horizontal shocks (e.g. Fox quad shocks), or torque-arm dampers such as:I don't see how the Caltrac prevents rearward movement of the rod, though, the bracket rests on top of the spring, which would allow the spring to wrap when braking.
or:
http://www.cobraautomotive.com/
Neither Caltrac-style and welded under-riders are optimal for braking anyway as they're drag-oriented pieces. Caltrac just makes it more tolerable for dual-purpose cars since they're near invisible when not needed.