Cube Stereo 150: Loose fitting bolt makes the entire ride wobbly and dangerous

penguin_pam

The issue My 2019 cube stereo 150 rides very wobbly, to the point where it's outright dangerous on speeds above 40km/h. I pinpointed the issue to the lower bolt that connects the springed rear part of my bike (blue arrow): As you can see in this picture, there is a lot slack. the white plastic you see in there is a piece of zip tie, I can fit another one of those at the left bottom side. This is how this looks without the triangle thingy....

Originally asked by Pieter De Bie on Stack Exchange (bicycles) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

As pointed out in the comments, that you could replace the bearings by hand when installing the kit isn't a good sign, but it could offer some clues what to do next. If they're a slip fit, install them with retaining compound. If the bores for them are wallowed out completely, that could be the whole problem and is likely not repairable. It seems possible that your existing "blue tube," which is likely installed into the front triangle, is damaged or worn and could be the origin of the problem. When you go back in to secure the bearings properly with retaining compound, extract the tube and replace it. To be clear, the contents of the kit make it look like the intention is for the blue...

Full answer by Nathan Knutson: https://bicycles.stackexchange.com/a/88506 (CC BY-SA 4.0).

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