RC drift car won't hold angle? Here's what to change
If your RWD drift car keeps straightening up mid-corner, the rear has too much grip compared to the front, or the gyro is fighting you. Check tyres first, then weight position, then gyro gain, then rear toe, and only then suspension.
Why it happens
Holding angle means the rear is sliding while the front keeps gripping and steering. Anything that adds rear grip or takes away front grip pulls the car straight. Most cars that won't hold angle have the wrong tyre combination for the surface.
Check in this order
- Tyres. On most surfaces, a harder rear compound and a softer or grippier front compound hold angle more easily. If you're running the same compound front and rear, change the rear first. See Drift Tyres.
- Battery position. Weight over the rear axle adds rear grip. Move the battery forward one slot; many chassis have two or three positions.
- Gyro gain. Too much gain counters the slide before it develops. Drop gain 5–10% and test again. Too little and the car spins instead, so change one step at a time.
- Rear toe. Rear toe-in adds stability and reduces angle. Go from 2° to 1° toe-in and see whether the car holds longer.
- Suspension. A slightly stiffer rear spring or thicker rear shock oil reduces rear grip under throttle. Make this the last change, not the first.
Parts that fix it
- Drift tyres in two compounds: Drift Tyres
- Turnbuckles for fine toe changes: Turnbuckles
- A gyro with fine gain adjustment if yours only has a dial: Gyro
FAQ
Does more steering angle help a drift car hold angle? Only if the front has grip to use it. Add steering lock after you've sorted tyres and weight, not instead.
Should the rear tyres be harder than the front on an RC drift car? On most indoor surfaces, yes: a harder rear breaks loose more easily and holds the slide, while a softer front keeps steering.
Is gyro gain too high or too low if the car won't hold angle? Usually too high. Lower it a little at a time; if the car starts spinning out, you've gone too far.