Is this bent or?
09-09-23, 09:08 PM
#26
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09-09-23, 09:53 PM
#27
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Got curious, so I checked.
Right, wrong, or otherwise, he does seem to get an decent number of likes.
Right, wrong, or otherwise, he does seem to get an decent number of likes.
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Likes For FBinNY:
09-10-23, 08:45 AM
#28
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Can you please put me back on? It would save you a great deal of angst.
Last edited by smd4; 09-10-23 at 08:53 AM.
09-11-23, 02:54 PM
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The cable is pulling the arm in a different direction than it was designed to, the height of the cross section in that direction may be slightly reduced compared to how it was before. It's like a 2x4 stood on its narrow side is more vertically rigid compared to lying it on its wider side. Repeated flex is the enemy of aluminium parts, it can cause fatigue leading to sudden and catastrophic failure, the bending event may even have caused a tiny crack that accelerates such failure, or the brake arms may now rub together in use creating surface faults that are stress raisers. But in reality the only likely problem is that the cable is rubbing against the side of the adjuster, which will lead to heavy lever action and early cable failure.
09-13-23, 07:57 AM
#30
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@louky - if you still have the bike, adjust the brake with the adjuster to bring the pads closer to the rim. Of course, how true the rim is may limit how close.
Braking will be marginal with those brakes and especially with those pads. The rider will pull harder to try to stop comparted to an effective brake/pad option. The result will be higher tension on the cable.
No one can predict when or if a failure will occur. It is all speculation because there are too many variables.
There is the consideration of passing on a known potential problem/failure vs providing an acceptable solution.
Braking will be marginal with those brakes and especially with those pads. The rider will pull harder to try to stop comparted to an effective brake/pad option. The result will be higher tension on the cable.
No one can predict when or if a failure will occur. It is all speculation because there are too many variables.
There is the consideration of passing on a known potential problem/failure vs providing an acceptable solution.
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09-13-23, 08:41 AM
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No damage to the downtube from where it banged hard enough to bend the caliper?
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09-14-23, 08:51 PM
#32
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The aluminum in the plane isn't getting bent to the point where it permanently deforms and stays in the new shape, like we are talking here.
If you bent the aluminum in the plane back and forth to that degree with every gust of turbulence, those wings would snap off in about 2 minutes.
If you bent the aluminum in the plane back and forth to that degree with every gust of turbulence, those wings would snap off in about 2 minutes.
Last edited by Yan; 09-14-23 at 09:02 PM.
09-14-23, 10:18 PM
#33
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Bikes of this era had enamel paints that were as tough as overcooked chuck. BITD, we'd see this damage to brakes, with no more damage to the downtube than scuffed wax, if that.
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An ounce of diagnosis is worth a pound of cure.
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FB
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
09-15-23, 07:41 AM
#34
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The aluminum in the plane isn't getting bent to the point where it permanently deforms and stays in the new shape, like we are talking here.
If you bent the aluminum in the plane back and forth to that degree with every gust of turbulence, those wings would snap off in about 2 minutes.
If you bent the aluminum in the plane back and forth to that degree with every gust of turbulence, those wings would snap off in about 2 minutes.
09-15-23, 08:10 AM
#35
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You do have a point there. Your value of the brake is off, however. $2 is more like it. $5 will get you a whole bike of that era.
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09-15-23, 08:14 AM
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[EDIT:] Actually it might just have hit that cable housing, the paint ding doesn't look to be in quite the right place.
Last edited by grumpus; 09-15-23 at 08:20 AM. Reason: Added
09-15-23, 08:24 AM
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