I ran mine today for over 2 hours. I finaly managed to break the throttle servo, a Hitech, but I've stripped the gears out of 2 of those too. I was running without a body and when I rolled it, it hit the arm just right I guess. I like the little thing. Has some good speed and corners alot better than I thought it would. I have to get the body done now. I've mounted the Mazda 6 body up and just need some paint to finnish it up, but it will have to wait to run it again when the gears come in. The reason I had to replace the servo is that one of the original servo's in the kit came DOA and I am waiting for a reply from Xray in TX on it. I will be putting the orginal back in it as soon as I get a respone/replacement from Xray. So far, I'm running 30% in it and engine runs about 190-200deg. I've had to recharge the battery pack 3 times I ran it so much.