So the bottom bracket on my bike keeps coming loose, please see 5 second video here that shows the problem:
I took it to the shop and they tightened it, which didn't take long at all, however I don't think they tightened it that well because it has started getting loose again already after only 6 miles riding.
I didnt see them tighten it so I'm not sure what kind of tool they used. I have researched a bit and have found different answers, some say you need lots of special tools, some say just a 32mm wrench,
The below pics show a close up of the bracket, please can someone help me with which part needs tightening, and what tool I would need to tighten it? I'm thinking if I get the right tool it would save taking it to the shop each time and I can give it a proper tighten.
The photos have labels on, so if you can specify easily, eg: A or B for example.
From one side:
On the other side:
The metal part label C is on this side of the bike, just behind all the plastic shielding:
So yeah, 2 questions really, which tool is needed to tighten the bracket on this bike, and which part do I need to tighten?
Hope this helps, please let me know if you need any more info to resolve