Why, do you have one??? I haven't had a chance to try it yet. I bought it based on a RCU review of a Kange Moncoupe where they were using that engine and yes I thought I would try it for the price. I also bought Tower HObbies and Tiger Shark engines based on the price. They have been impressive performers. They both had sticking throttle barrel issues so I dealt with those and no problems since! I actully check all me new engines for sticking throttle barrels. If they stick when they are new, they don't get better, they hust eventually jam! I have found a few other brands that stick when new but all of them where easy to fix for smooth running. [8D]