Team Associated B6 / B6D flat arms vs. gullwing arms

I spent a few hours at the track today testing B6D flat arms vs. the B6 gullwing arms.  I normally run flat arms, but tried out the gullwing arms (and gullwing tower) with the exact same shock package, shock locations, ride height, etc.

The gullwing arms basically soften the front steering and smooths it out and makes it a little more linear.  It also makes it a little easier to drive.  What they do is stand the shocks up more, and keep the progression more linear by keeping the lower shock mount more inline with the upper shock mount through the arm stroke.  So there is not as progressive a spring rate as the outside arm loads up and compresses in the middle of the corner.

The flat arms provide more initial steering and corner entry bite, and are a more aggressive setup in my opinion.

Overall I found it a step backwards on our mid-high traction small indoor track.  Definitely on looser traction, you will want to go with flat arms for the steering.  I know the pros use gullwing arms on high-traction surfaces in mod, but for me, I like a lot of steering and have a more aggressive setup.

By the way, you can bolt on a different pair of arms, but it's not going to work out of the box.  With more hours of tuning, I'm sure I could get it working better, but overall my B6 is really close to my ideal setup right now and I went back to flat arms.  At a minimum, I found I needed to drop the inner front ballstud 0.5-1mm, as the softer front induces more mid-corner roll.