Originally Posted by
policeman0077
Some it's not the harsh acceleration causes off tracking, but when I was on straight with certain speed and accelerated relatively gentle, the car just not go straight.
Make sure you check your diff. I always run ceramic diff balls on my cars, especially on my F1. They make the diff action silky smooth, and they last a lot longer than steel balls. Next, check the tightness of your diff. If it's too tight, you will have a very hard time keeping the car from spinning out on a loose track. If it's too loose, you can damage the diff and spur gear. When the diff is set right, it should not slip. I usually set mine just tight enough to keep from slipping.