BTW, I'm not rich but if I crack this $1200 aluminum bike then I will just replace it with something that won't bust and chalk it up to experience. That being said, I'm going to beat this aluminum Giant Defy to a pulp to see if it will take it. So far so good. If it takes it and I get the the body weight I want, I'll try the same experiment with a carbon bake just because I can and want to know.