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I used to set up every derailleur hanger with a straightedge, but after a customer's new carbon frame needed a $400 repair from a bent hanger, I switched to a dedicated alignment tool for every build.
Has anyone else found a specific job where a 'good enough' old method just stopped being worth the risk?
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adams.harper3mo ago
Wait, the hanger bent the carbon frame? I always thought those things were supposed to bend or break first to save the frame... that's wild. A little aluminum piece causing that much damage just doesn't seem right. Makes you wonder about the design. Guess the tool pays for itself real quick if that's the other option.
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the_john1mo ago
That hanger bending the frame sounds more like a bad installation or a hard hit than a tool problem. A straightedge still catches a bent hanger just fine if you know where to look and check it right. The carbon frame likely got cracked because someone kept riding with a bent hanger or torqued it wrong, not because the alignment tool was missing. Spending $400 on a specialty tool to avoid a $400 repair once is just hedging against bad luck.
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