Turning carbon frame to indoor trainer bike

A light bike doesn't replace good fitness.

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Streetfield
Posts: 87
Joined: Tue Jun 18, 2024 4:13 am

by Streetfield

I have a carbon frame which has some minor cracks around BB and seat tube.
I am thinking it may still be rideable on an indoor trainer.
For the ease of setup, I am thinking of 105 Di2 without brakes and rotors and do it myself, which should be easy enough.
That costs just the same as some cheaper mechanical groupsets plus the labor for my LBS.
What do you think?

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AJS914
Posts: 5570
Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

It's not hard to route cables if the bike has cable guides. If you wanted to go super inexpensive get some used 11 speed off ebay or even new Chinese stuff (Ltwoo, Sensah). Sensah 11 speed shifters and deraillerus cost like $120 all in.

https://www.aliexpress.us/item/3256806587016378.html

If you were concerned about the carbon fiber, it wouldn't be too hard to put a carbon fiber and resin band-aid over the cracks after you maybe dremel them out.

Butcher
Shop Owner
Posts: 2043
Joined: Sun Jan 03, 2010 4:58 am

by Butcher

Streetfield wrote:
Sun Jul 28, 2024 12:49 am
I have a carbon frame which has some minor cracks around BB
Minor cracks? I don't think there is such a thing, especially around the BB.

Sure, you may not get road rash, but my sprinting is poor on my indoor trainer, but I certainly would not want something to break if I did some did such interval.

AJS914
Posts: 5570
Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

He could probably even do a hardware store repair on a trainer frame that would be pretty strong - resin and fiberglass band-aid! Since it's a on a trainer weight and cosmetics don't mater.

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