Originally Posted by ahultin

I am not quite as heavy as the OP and have first hand experience reaching the fatigue limit on modern aluminium frames. The first was a Fuji roubaix, aluminium frame with carbon fork and carb stays, which failed at the aluminium dropout at 12,183 miles . The second was a cannondale disc fork which failed just above the disc brake mount at 7,982 miles. While I initially shied away from carbon fiber, it has proven to be the superior material