Hello again,i use a brushless system for my cr-01 and when i accelarate the motor makes a sound like is jammed(or it's full of stones inside!) and moves forward-backwards at the same time.Battery new and radio setup ok.Any ideas?thank you for all the help so far,regards.
The wise one answers:
If your worried about something on your car, check it straight away! It doesn't sound right to me.
