So the other day my left crankarm came off (!!!) after a short, but steep climb. I have been pushing myself and went up a steep hill on my second chainring and in the lower-center of my rear cog (the chainline was pretty straight). Anyway, I pulled over, re-attached the crankarm and took the back/slow way home just to be safe. I didn't get a chance to get my bike to the shop over the weekend, so last night I took a look at it...took the crankarm back off...made sure everything "looked right"...re-attached the crankarm (tightened evenly)...and then gave everything else a "once over". Today I went back out and in less than a half-mile I looked down and the crankarm was coming off again! I wasn't even pushing real hard yet!
My neighbor is an avid cyclist, so he and I were talking...he said that there has got to be something wrong with the crankset...even being an FSA Omega. I'm planning to get my bike back out to my LBS tomorrow as it's been less than 60 days since I've had the bike and they do a free tune-up within 60 days. I looked at the crankarm and it has a sticker with a weight limit of 110 lbs. At 265 are there any cranksets that shouldn't make me nervous????