Gnarly FGG Action
04-01-05, 01:10 PM
#1
Oh boy
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Gnarly FGG Action
did anyone else see this jacked-up frame?
https://www.fixedgeargallery.com/2005/mar/Cb.htm
Steel is Real!
https://www.fixedgeargallery.com/2005/mar/Cb.htm
Steel is Real!
04-01-05, 01:36 PM
#2
Wher'd u Get That Jacket?
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Aluminum breaks. It has a finite fatigue life. It gets weaker and weaker throughout its life the more fatigue cycles it goes through and then it breaks. So you have to overbuild it to begin with to compensate for it getting weaker later on. That is the tradeoff for its light weight and reatively affordable nature.
If you want a frame that won't fail catastrophically, you'd better go with steel, titanium, or carbon.
If you want a frame that won't fail catastrophically, you'd better go with steel, titanium, or carbon.
04-01-05, 01:43 PM
#3
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I think the problem was beacuse, as the owner wrote, that it broke in the exact spot where a bolt was. The frame material being aluminum probably didn't help either....
04-01-05, 02:13 PM
#6
The Alternative Dressing
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Originally Posted by flythebike
If you want a frame that won't fail catastrophically, you'd better go with ............ carbon.
But you're probably super cool on your fixie.
04-01-05, 02:21 PM
#7
Wher'd u Get That Jacket?
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Yes, a hole in your ALUMINUM frame would definitely reduce the fatigue stregth of the frame and increase the likelyhood of such a catastrophic failure. He is lucky he wasn't injured or killed.
04-01-05, 02:41 PM
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i agree al. has a finite fatigue life, and in theory in can break catastophically. Empriically, my al. frame has been ridden daily for over 16 years. On road and off. Gathousands of miles annually. No failures and I have full confidence in the frame. Likewise, must of us dont sweat the 'finite fatigue life' of our handlebars, which take a beating.
now, if i had throughbolted the downtube and the seattube, I may not have such confidence.
now, if i had throughbolted the downtube and the seattube, I may not have such confidence.
04-01-05, 02:44 PM
#9
Wher'd u Get That Jacket?
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Certainly a well constructed aluminum frame could last a lifetime. Or longer.
04-01-05, 04:15 PM
#10
645f44
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Originally Posted by stevo
i agree al. has a finite fatigue life, and in theory in can break catastophically. Empriically, my al. frame has been ridden daily for over 16 years. On road and off. Gathousands of miles annually. No failures and I have full confidence in the frame. Likewise, must of us dont sweat the 'finite fatigue life' of our handlebars, which take a beating.
Steel frames can fatigue and break suddenly. Build a steel frame so it won't and it will be too heavy.
04-01-05, 04:41 PM
#11
Oh boy
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but I think the point is that aluminum's progressive metal fatigure malleability is a lot less than steel. Steel (And other metals) can be bent back and forth a lot before they progressively get weak enough to snap. Aluminum has a lot less elasticity before breakage. Thats the point.
