[21 / 3 / ?]
Video of the crank arm: https://streamable.com/0in2um
Video of the BB: https://streamable.com/h10jp1
Pictures of everything: https://imgur.com/a/gfqxw1C
What causes that shit?
I bought this bike used last year and I've done a few rides and 2/3 nights bikepacking trips with it. On one of them my left crank arm bolt loosened and the arm almost fell while riding. Tightened it with my multitool, came loose again later in the day, retightened it real hard again and it was fine for the rest of the trip.
Back home I tightened the bolt even more with a real allen wrench and had no problems since, did an other 3 nights trip after that with no issues.
But some anons on an other thread guessed what the problem was and told me to fix that shit ASAP because it's only gonna get worse sooner or later:
>>1753772
>>1753834
>>1753840
I'm planning big touring trips this year so even if didn't cause any more issues I'm going to fix it just in case. I'd prefer not having to go to a bike shop, I can buy whatever parts and tools are needed for the job. I want to learn to do everything by myself.
What should I do? Can I just replace it with any 170mm left side crank arm or does it need to exactly match the drive side crank arm? Do you think the BB "spindle" or whatever it is the bolt attaches to could be fucked too? The bolt seems fine, and it seems to screw on the BB just fine. Thanks frens
Video of the BB: https://streamable.com/h10jp1
Pictures of everything: https://imgur.com/a/gfqxw1C
What causes that shit?
I bought this bike used last year and I've done a few rides and 2/3 nights bikepacking trips with it. On one of them my left crank arm bolt loosened and the arm almost fell while riding. Tightened it with my multitool, came loose again later in the day, retightened it real hard again and it was fine for the rest of the trip.
Back home I tightened the bolt even more with a real allen wrench and had no problems since, did an other 3 nights trip after that with no issues.
But some anons on an other thread guessed what the problem was and told me to fix that shit ASAP because it's only gonna get worse sooner or later:
>>1753772
>>1753834
>>1753840
I'm planning big touring trips this year so even if didn't cause any more issues I'm going to fix it just in case. I'd prefer not having to go to a bike shop, I can buy whatever parts and tools are needed for the job. I want to learn to do everything by myself.
What should I do? Can I just replace it with any 170mm left side crank arm or does it need to exactly match the drive side crank arm? Do you think the BB "spindle" or whatever it is the bolt attaches to could be fucked too? The bolt seems fine, and it seems to screw on the BB just fine. Thanks frens
