r/bikewrench

Took my bike to my LBS for just a general tune up and this happened. They said they don’t feel comfortable trying to extract the bolt and told me to take it to a machine shop. Took it there and they said they can’t get it out as well. Emailed the manufacturer to see if there’s a solution but waiting on their reply. May try splitting the bolt in two and getting it out that was as a last ditch effort? Was wondering if there were any other suggestions or do I need a new frame?

1. Do I tighten or loosen the lock ring?
2. Do I need another tool?

How I removed the used sprockets (17t) and not this new sprocket (16t) is beyond me.

Be kind. I am illiterate in matters of bike mechanics.

All help is appreciated!

Hey everyone
My steel fork only has these forward-facing eyelets (no side eyelets). What are the safest ways or best racks to mount panniers using this setup?

Hi, I just got this beautiful tandem from someone and I'm wondering whether this is weldable or whether even if repaired it won't be safe in the long run.

I weigh 120kg, the weight limit for the bike is 150kg. The first ride out on it I noticed the cable loom underneath the frame was catching on the tyre when the front forks were pressed right down. I immediately went home took all the cable ties off and insulated and wrapped the cable and redone all the cable ties tight to the frame. If I have the front suspension on air lock it is ok but if I don’t it is catching. If I turn left with the handlebars it creates a loop in the loom so it hangs down. The first picture is how it looks now and the second is when it just happened.

I have just got some strong self adhesive pads which im going to try adding and cable tie them on and add a half cut tube of garden hose where its catching for protection. Any advice or anyone got a similar issue? I’m going to upgrade the front suspension eventually so I will have more travel. Thanks in advance.

Wheel doesn't fit because of the nut. Can i remove it?

I replaced my girlfriends bikes wheels and put my old carbon wheels from a Chinese bike. Her bike was a ten speed shimano tiagra. My old bike was a 12 speed WHEELTOP. I placed a 1.85mm spacer because I noticed some play and that’s what google said. But I noticed that when I pedal by hand and get the wheel up to speed there’s seems to be vibration and specifically I can feel it through the stroke as I’m pedaling with my hand. Could it be and axel problem or my wheel isn’t true. For reference her bike is a 2019 cannondale synapse carbon and my Chinese bike is a seraph ttx42.

Hey everyone,

I’m running into a frustrating issue with my SRAM Red AXS rear derailleur (12-speed) and could use some collective wisdom.

The Problem:
The derailleur randomly stalls across the cassette during shifts in both directions.
When it hangs up, pressing the shifter still makes the LED blink (wireless communication is fine), but the motor stays dead and doesn't move.

As you can see in the video: If I gently push/nudge the parallelogram with my thumb, it clicks into position and immediately comes back to life, shifting normally for a few gears before getting stuck again.

What I’ve tested so far:

Chain on vs. off: With the chain installed and under tension, it stalls almost immediately. With the chain completely removed, it runs much better and shifts through multiple gears, but still occasionally freezes up.

Battery / Contacts: Battery is fully charged, contacts are clean. Even tested a different known-good battery, same result.

Firmware / Reset: Performed a hard reset / firmware recovery via the AXS app. Firmware is up to date.

Pivots & Cage: Cage damper moves smoothly with normal resistance, no obvious external damage.
It looks like the internal lead screw or the overload clutch is binding/getting hung up under load, requiring that slight manual nudge to overcome the initial resistance.

Since the bike was bought used and is well outside the 2-year warranty window, official warranty replacement is not an option.
Has anyone successfully revived a derailleur with this specific binding issue (e.g., flushing the pivots with penetrating oil/PTFE lube), or is the internal gearbox/motor toast?

Thanks in advance!

An acquaintance brought a bicycle to me that was no longer shifting. She had installed a basket, that was resting on the bits of plastic extending from the shifter, and managed to break both of them off. lol

So

I am unable to find a “TD-one” grip shift set. Will this cheapy eBay 3x6 shifter work?

https://www.ebay.com/itm/198338633810

I have 2 problems with my build right now first I think i didn't shorten the chain enough id like to know if it is in fact too long or fine.

Secondly the chain climes up the chain rings teeth and to get the chain in i need to press it down.

Its a kmc chain and an ali front chain ring ill provide some photos of my problems thanks 😊

Is this a crack? I can't feel anything under my finger its completely smooth and i tested it with coin tap... any other way to test is it a crack?

It's only visible from a certain angle

Hello,

I recently took apart my headset to figure out a creaking sound that was coming from the front end, it ended up being a misaligned front rotor/loose front wheel. I ignorantly forgot to keep note of which order I took the headset bearings off in and now as I'm re-assembling everything I've noticed a bit of a gap with the lowest bearing you can see in the photo where there is a little bit of brown showing.

I'm looking at pictures of similar bikes online and it appears there is no gap, whereas in mine there seems to be a pretty noticeable gap. Does this mean I've installed the bearings in the wrong order and would anyone happen to know which order they go in?

Thanks for your help!

Couldn’t quite get the alignment right. After a few tightens/loosens it’ll the clamp of my drop post level crack. Looking for some quick fix solutions until the new part arrives. Thanks everyone! Much appreciate any advice or feedback!

Hi all,

Is this gap normal or is my hanger bent in this case? I am not able to get rid of this gap after I have un tightened the screw. When I move the derailleur up it disappears.

Will appreciate your opinions or advice.