Why does my 1/10 2WD 17.5 carpet buggy spin out under braking?

Assuming a typical 2WD buggy, start with the ESC brake force: turn it down a little and test. Set drag brake to zero if it’s on, and apply the brake more gradually. Too much or too abrupt braking can make the rear step out.

If it still spins, increase rear toe-in by one small step for more straight-line stability. For the twitchy feel, reduce steering dual rate slightly, then test again. Change one thing at a time. If you share the car model and current settings, I can suggest a more specific adjustment.

I don’t have a model-specific landing setup for your buggy. What happens when it lands: does it bounce, bottom out, nose-dive, or kick sideways? Those point to different fixes.

First check that the shocks move freely, don’t leak, and match side to side. Tell me the car model and what it does on landing, and I can narrow down one adjustment to try.

If it feels harsh on impact, first check the shocks for binding and make sure both sides move freely. I don’t have model-specific setup guidance for your buggy; as a general test, try one step thinner shock oil so the shocks compress more easily. If it’s actually bottoming out, don’t soften it yet. Tell me the car model and shock oil you’re using, and I can narrow it down.