At least I replaced the actual cable going from the lever to the transverse!
Especially when you havenāt even celebratedāor even acknowledgedāthe cableās last 8 birthdays.
[quote=NOVELTYNAME]The pad wear shape is consistent with what Iāve got
Have we talked about (incorrectly) internally-routed cables sawing through bottom bracket spindles? Iāve seen this on one FB group or another, apparently itās a thing on certain Cannondales that if not routed according to mfr instructions, the internal cable ends up tensioned on the crank spindle. And over time a steel cable wins over an aluminum spindle.
Yikes.
This one was caught before it failed.
Pics of a different failure.
Wow!
Thatās pretty impressive. I wonder how many miles it takes. Prolly a few thousand?
According to the reports, not that many. And I believe it, under tension a steel cable against an aluminum spindle is no contest, especially if thereās even a tiny bit of grit present.
When I managed a high ropes/teambuilding course we had to be very careful to use only steel carabiners on the cables for the safety tethers to participants. If you used aluminum it was amazing how fast they started to get eaten away from just sliding with hardly any weight on them.
Iāve built a handful of those bikes, and yes, you have to be aware of what youāre doing.
All of the customers are ācat2 brosā that do their own work and they replaced their own cables after a season. Well, theyāre all on new cranks because cat2 bros are the best mechanics out there, didnāt you know?
Oh, BMC TM and TMR frames would do the same thing, but with housing.
That is awesome.
In a related softly softly cutting method, a lab technique I never got to build when I was growing large single crystal Mg-Zn alloys was an endless loop of cotton that ran through an acid bath and then across the sample, to cut without mechanical stresses that would introduce dislocations. Gently does it, eventually.
Plastic cuts skin, aluminum cuts plastic, steel cuts aluminum etc etc
Oh HELL yeah, of course that happens
then what does skin cut? whoa man
Souls?
[quote=jimmythefly]According to the reports, not that many. And I believe it, under tension a steel cable against an aluminum spindle is no contest, especially if thereās even a tiny bit of grit present.
When I managed a high ropes/teambuilding course we had to be very careful to use only steel carabiners on the cables for the safety tethers to participants. If you used aluminum it was amazing how fast they started to get eaten away from just sliding with hardly any weight on them.[/quote]
Via ferrata lanyards come with Al biners, and those get dragged along steel wire all day. No weight on them normally, but they hold up fine ime.
Doesnāt the housing have a plastic coating that needs to be eaten away first?
very cool! Introduce some rain riding and you can really get sawing!
have also seen this a number of times
mostly when the snap-in BB cable guide breaks, home mechanic readjusts thinking that the cable āslippedā
reminds me of my dad, that would always go hiking with wire saw incase he came across a dead deer, so he could keep the skull/antlers
Only took one day for this crank to give up the ghost, thought the chainring would be the first to fold.
Whoa, weird, never seen a crank arm fail like that, did it just bend or is cracked too?
āwatts