Sieva 🚴🚇🏙️🌹

Reading a discussion of people having a crack in a seat tube of a carbon frame.
One couldn't give theirs away, fixed for hundreds of $.
The other is trying to sell for cheap. The frame is from ~2018.

An incredibly strong material, apparently 

#BikeTooter

Feb 26 at 12:08amWeb
Show thread@IanAMartin HAS MOVED!Feb 26

@Anibyl It’s super strong when you try to bend it, but doesn’t deal with hard impact well at all. So, when bikes either fall over or go over curbs or land hard — you know, when bikes get ridden — it starts to reduce in physical integrity.

Why use it in bike frames? It’s super light!

Aluminum foil is super light too, but I don’t see people using that.

Steel and steel / aluminum alloy was and still is the best material. Superior to wood, which was original frame product for some manufacturers.

I find weight rarely matters, unless you’re doing the Tour de France or Whistler Gran Fondo.

Show threadPorkrollPosadistFeb 26

@Anibyl Sounds like the Titan Submersible on wheels

ducks

#SteelIsReal

Show threadrolandFeb 26
@Anibyl Carbon is what carbon does :-). If you ride your carbon bicycle a lot, it will have these sorts of "cracking" issues far sooner than a steel frame ridden the same distance. It seems pointless unless you are part of a racing team with a mechanic and you get new bicycles every 5 years or less OR you have lots of $ #Ymmv
Show threadLovesTha🥧Feb 26
@roland @Anibyl I heard someone saying they didn't think a carbon frame was a good idea to ride past the first year....
Show threadKevin BFeb 26

@LovesTha @roland @Anibyl

oh dear, and here I am riding a Trek 5200 from 1999 with over 40k miles on it. What ever shall I do?

Show threadvandenberglegsFeb 26
@keraba @LovesTha @roland @Anibyl Truly, there are a lot of old carbon frames still out there being ridden. And there are A LOT that have failed.
Show threadrolandFeb 26
@vandenberglegs i am sure carbon frames can last almost as long as steel frames ; you just have to take much better care of them than steel frames! and most people can't do that. i certainly can't :-) #Ymmv
Show threadvandenberglegsFeb 26
@roland Agree. Very happy with my steel bicycles. I don't race, so comfort and longevity are more important than saving a kilogram.
Show threadLovesTha🥧Feb 26
@vandenberglegs @keraba @roland @Anibyl it will fail one day, and the fail can be sudden.
Show threadLovesTha🥧Feb 26

@Anibyl Same for aluminium frames, even the most trivial of fixes is an insane headache. I will not buy another frame that isn't steel unless there just isn't another option. And there will always be another option.

I have a aluminium ebike (long tail cargo) with cracks around the seat stay seat post weld. My current plan is to reinforce the entire area with carbon fibre. Yes that means I'm fixing one unrepairable material with another, but it is the best option available to me.