YES THE 38 MAY BE OVER KILL , BUT WHEN I GET IN TROUBLE--NOT WATCHING WHAT IM DOING I CAN HIT THE TROTTLE AND PULL OUT WHEN I NEED TO. CAN YOUR 1.40 ? I HAVE NEVER USED RCS ENGINES,I DID READ ABOUT IT IN M.A.N. HAVE YOU HAD MUCH TROUBLE BREAKING IT IN? IN THE PROCESS OF BUILDING A P-51 HANGER 9 1.50 SIZE . IT MIGHT BE MY NEXY ENGINE . THE 180 IF STRONG ENOUGH. EVERY BODY HAS TWO CENTS OF INFO. THAT IS WHAT MAKES RC FUN AND THE WAY WE LEARN MORE THANKS