The LA is very low in power range, but it is also very lightweight, so it will make up some there. It's also easy to start and very reliable...but loves to develope leaks. Seal the carb, muffler and back plate with red silicon (RTV) and check the head and muffler screws after every flight for about the first hour of run time. taken care of, it will fly the LT-40 fantastically for many many hours.