I think I won the award for "weirdest bike mechanical problem of the week".
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@SRLevine Yikes! That is not a bolt that I would expect to fail.
@forth It looks like it sheared basically straight through. Kind of wild.
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@forth It looks like it sheared basically straight through. Kind of wild.
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R relay@relay.mycrowd.ca shared this topic
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@Primavera @forth I think so? Could be aluminum, I'd have to check.
ETA: I mean the bracket, I think bolts are usually steel.
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@Primavera @forth I think so? Could be aluminum, I'd have to check.
ETA: I mean the bracket, I think bolts are usually steel.
@SRLevine @Primavera Yeah, I'd be extremely surprised if that bolt was anything other than stainless steel. Not entirely implausible for it to have sheared, but I'd expect it to be a rare occurrence.
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@Primavera @forth I think so? Could be aluminum, I'd have to check.
ETA: I mean the bracket, I think bolts are usually steel.
@SRLevine @forth curiosity; yeah the brackets will be either Alum. or some other light alloy (Magnesium alloys sometimes also get used in these things)
the bolt itself will definitely be steel; I asked if it stainless because stainless steel hardware has some quirks and is often weaker than carbon steel stuff of the same dimensions. -
@SRLevine @Primavera Yeah, I'd be extremely surprised if that bolt was anything other than stainless steel. Not entirely implausible for it to have sheared, but I'd expect it to be a rare occurrence.
@forth @SRLevine I avoid stainless fasteners as much as possible; not in this specific application but in my area (woodwoorking) they just snap so much easier than normal fasteners, they also strip heads much more easily. also for bolts, bolt on nut, if you screw them in too much or too quickly or look at them funny when you're doing it they'll cold weld together and require angle grinders to separate. I still use them for installations that demand it but it is such a pain to deal with -
@forth @SRLevine I avoid stainless fasteners as much as possible; not in this specific application but in my area (woodwoorking) they just snap so much easier than normal fasteners, they also strip heads much more easily. also for bolts, bolt on nut, if you screw them in too much or too quickly or look at them funny when you're doing it they'll cold weld together and require angle grinders to separate. I still use them for installations that demand it but it is such a pain to deal with
@Primavera @SRLevine Yeah, I've had the same sorts of issues with stainless bolts. But they're preferred for the majority of applications on bicycles because rust is more of a problem. And I suppose it's one (albeit not the only) reason a lot of bolts on bicycles have torque specs, even if most people get away with tightening by feel.
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@Primavera @SRLevine Yeah, I've had the same sorts of issues with stainless bolts. But they're preferred for the majority of applications on bicycles because rust is more of a problem. And I suppose it's one (albeit not the only) reason a lot of bolts on bicycles have torque specs, even if most people get away with tightening by feel.
@forth @SRLevine yeah they are quirky. they also have still, I like investigating these types of things, fasteners in general fascinate me lol. curiously, I remember when I started riding bikes most hardware was not stainless, a lot of it was chrome or plain galvanized or even phosphate coated (the black stuff) I then stopped riding until recently, when I buy a bike and even the fenders are fastened with stainless, that stuff was so much more expensive then lol. -
@SRLevine @forth curiosity; yeah the brackets will be either Alum. or some other light alloy (Magnesium alloys sometimes also get used in these things)
the bolt itself will definitely be steel; I asked if it stainless because stainless steel hardware has some quirks and is often weaker than carbon steel stuff of the same dimensions.@Primavera @forth That I'm less certain of, probably stainless because of the type of bike this is, but non-zero chance it was replaced at some point, so who knows.
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@Primavera @forth That I'm less certain of, probably stainless because of the type of bike this is, but non-zero chance it was replaced at some point, so who knows.
