First of all I'd like to say that I have a Pedelec Foldable Bike, from Longwise, a company probably nobody heard of. The type of company that helps you buy their items and abandons you when you ask for parts and assistance. They refuse to answer my emails.
Anyway, I had the bike for over a year now.
I was riding it when all of a sudden the right pedal started to wobble, I had no idea what was wrong but I managed to get home and noticed that the crank thread was completely gone! I read online that probably the pedal wasn't fitted well.
I bought a crank puller and took the crank out, it is a Lanhang-52T-170L-quite heavy.
I went to 3 bike shops but I didn't find anything like it, they were either smaller or had more than one gear.... *phew!* I was also told that the thread couldn't be replaced/fixed.
I checked online and I found the following cranks which should be exactly or close to the one I have, what are you thoughts on these?
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TMC Single Speed Fixie Bicycle Fixed Gear Bike Crankset Cranks 52T | eBay
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MTB Crankset Crank Chain Wheel BCD130 Square Hole 52T Chainwheel with Shield | eBay
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Lasco Bicycle Crankset 52T 165mm Bike Chainwheel Alloy Chainring Chain Guard | eBay (slightly shorter)
Sorry for the long text, I would really appreciate some assistance as I have nobody that's experienced to help me. Thanks!