Tip-stall on landing approach

A wingtip drops suddenly on approach, at low airspeed and high angle of attack.

Try these in order

Make one change at a time and re-test — that's how you learn what your car likes.

1. 1
   Add washout (1-2° less angle of attack at the tip)

   Lets the wing root stall first, so the ailerons still have authority when it matters.

2. 2
   Reduce aileron throw / add expo at low speed

   Less chance of provoking a full stall with an aggressive input.

3. 3
   Carry a bit more approach speed

   Don't fly the approach right on the stall margin.

4. 4
   Slightly forward CG

   Reduces the angle of attack needed for a given speed.

General RC tuning guidance — your chassis manual's own tuning chart is the final word for your specific car.