i would tell you about a jet joe blowing up but all witness`s are dead. not really its just what i have heard all i have seen is a jetjoe running ok but with lots of vibration meaning life will be short. i only have experiance flying with a few types and i can very much recommend behotec and wren engines seem to be good apart from slight problems with ecu failures. as i said also the heward wasp is a good buy