Originally Posted by dbohemian
At your size and weight I would not recommend any of the standard Aluminum or Carbon frames as they just are not generally designed around perameters like that.
A small story for you. I personally know of a gentleman who had a Cannondale, not too long ago, custom made who weighed 335lbs and within a week the thing collapsed and he broke both his arms at the same time! You know the bigger they are the harder they fall. No carbon frame I know of is built with someone of your size in mind either and that failiure mode is catastrophic as you may already know.
What your really saying is that the custom builder was so incompetent that they didn't take the riders weight into consideration, when custom building a bike.