Mjunior,

what fuel do you use? Do you use any after run oil? After approx 50 flights I had the connecting rod come through the case. The pin on the crank that you put the rod on broke. I sent it to Horizon and the fixed it. The eng had a bunch of rust in it. That isn't what caused the failure but I don't know what to do about the rust. Being mounted in a cowl I can't get after run oil in it very well.