6

You've broken your bottom bracket's axle. There is no way to safely reattach, so you're up for a replacement bottom bracket. Ideally you'd install a cartridge BB that duplicates what you have. The crank arm (in your hand) is probably okay to reuse, though have a good clean and a close inspection before doing so. Dings are fine, chips maybe, and cracks are ...


4

If it was mine and I damaged it riding, moving, storing etc. I would try to de-burr the edges and see how it shifted. In your case any modifications you make means you own it. Contact either the shipper or the vendor and forward the pictures to their claims dept. If you exhaust all avenues and are stuck with it, try repairing it then install it. If it works ...


4

As Criggie says, bottom bracket has to be replaced. Axles in cartridge type bottom brackets cannot be removed or replaced. They are held in by pressed in bearings. I can see it's a square taper axle type the axles on Octalink and other splined types have a greater diameter). Those are common and not hugely expensive. Different model cranks need different ...


1

well, if shifting from smaller to bigger chainring happens on these broken teeth I guess there is a chance of chain slip (though most probably it will just go to next teeth)


1

The first thing I'd do is contact Tern and see if they can supply a replacement. That's the easier way to make sure you get a compatible crank. I don't think it's possible to buy Prowheel components directly (at least they didn't show up in a couple of online bike retailers I tried) so you need to find a compatible replacement. From the Tern Verge D9 web ...


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