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Old 11-17-18, 11:48 PM
  #17  
ColonelSanders
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Join Date: Jan 2014
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Bikes: 2017 Surly Troll with XT Drive Train, 2017 Merida Big Nine XT Edition, 2016 Giant Toughroad SLR 2, 1995 Trek 830

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Originally Posted by Campag4life
Just don't agree. Fatigue limit can be tested and is in the laboratory by major manufacturers. I personally have been riding Al bikes a long time and have never seen a fatigue failure. I am sure they maybe out there but so incredibly rare. Force/deflection X's no. of cycles to fatigue. Any frame can be tested in the laboratory at higher forces and larger frame bending amplitudes than a frame would see in the field to failure. Likely some Al frames stroking in the lab throughout the world as I type this.
I have broken two aluminium frames due to fatigue(on the top tube, about an inch from where the top tube meets the seat tube), neither bike lasted 12 months.

I am 400lbs though.
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