My truck handles pretty well in the corner, but then the back end washes out getting back on power, should I add more traction, or just lay off the trigger?

a lot can effect that
What rear hub you running? More total toe can cause it. I am running 0deg hubs
camber? Slipper to tight?

my b4.1 do the same when i punch it after just say a fast 180 turn. i dont wash were i cant catch it but after the turn i cant really punch it or it will kinda fish out

im running 0 deg hub i and 3 on board toe and neg 1 camber and my slipper is tight enuff to lift the fron up 2 1/2 inches

If you raise the rear camber link on the tower or inner ball stud you will increase rear traction.

ok, so adding roll center (lowering the inner ball stud) is what causes the vehicle to have more body roll in the corners?

You could try adjusting your punch on the ESC too. If you are racing mod you probably have more than enough power to take out a bit of low end.

You sure about that?

Ball stud placement on the tower and hub do not effect roll center the same.

Read this on Roll Center
http://home.scarlet.be/~be067749/58/

There is also a few links posted back in this thread and in the B4.1 thread.

From what I have tested on my Buggy the less washers in the rear the more traction my Buggy has. Right now I am running 0 washers and it drives very well. my truck has 2 in the front and 1 in the back.

higher roll center / less washers = increase in on power traction:batman:

Correct which I have posted but it is not the same as the outer ball stud :batman:

i was correcting sprinkler

hehe :D :tire: :sneaky:

if your slipper is too tight that would cause the rear to spin out?

I'm going to readjust mine when I get my esc wired up again.

On the b4.1 getting the slipper right really made a big difference, i was surprised.

I don't think it would "cause" you to spin out, but he helps keep you from spinning out when you hit the throttle too hard. I learned last weekend that you need to set it at least as tight as it needs to be to clear all jumps. I was having trouble on a quick dip into a double and figured out I was slipping to much, after tightness I could clear it but had to be careful not to spin out.

I'm proably going to keep the slipper just loose enough to prevent gear damage, then control the spin using the ESC throttle curve.