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fatigue factors for frames(5 posts)

fatigue factors for framessushiken
Feb 25, 2002 12:07 PM
i will be purchasing a new bike and am wondering how long i can expect my new frame to last. i am especially wondering about deda eom as compared to ultra foco as compared to other lighweight materials. any help would be appreciated!
I'm sure it's happened...Spoke Wrench
Feb 25, 2002 2:58 PM
but I've never had a frame that didn't last way longer than I wanted it to. Do you really think you're going to want to ride the same bike for the rest of your life?
The Impossible Hour(ly question)Kerry Irons
Feb 25, 2002 5:34 PM
Since you have no idea what stress loading your frame will undergo, you don't know what potholes you will hit, you don't know how "perfect" the welds are, etc. AND you don't say how much you weigh, what service you plan to put the bike through, whether you ride "heavy or light", what size the frame is, how much distance per year, etc. then I would guess that your frame will last somewhere between 2 months and 50 years, with a mid-point estimate of more like 1-30 years. Approximately.
Should he round UP or DOWN? ;-)grzy
Feb 25, 2002 5:36 PM
It's right up there with asking how long is a piece of rope? It depends.
re: it dependscyclopathic
Feb 26, 2002 4:39 AM
Kerry is right

answer will greately depend on you weight/size, roads, amount and type of usage. Racing puts more load then casual riding, loaded touring even more and so on.

Frames usually designed to last 25-35,000 miles. I know a ranndoneur who put 114,000mi on his frame and it is still going strong.

Generally ultracyclists try to avoid ultra-light frames, lower grade lugged frames are the most durable. The only rider I've heard who breaks frames on regular basis is a RAAM racer and even then he gets ~5-6years out of it. I am guessing his milage is ~300-500mi/week