literally. yesterday i had a big cat come in with the following note: clunks when pedaling. not gears
about 10 seconds of looking and i see about a centimeter of lateral play in the cranks
went to remove the cranks and the threads were stripped. the shaft also had several o rings on it which didn't look original at all. spoke to customer and it hadn't been serviced for anything related but had recently been to the dealer for a battery replacement
odds are they saw the issue and attempted a makeshift fix but couldnt nail it down because...
the shaft wasnt straight!
the hole in the cups had worn to an oval. awesome
went to use my park tool 36mm wrench to loosen the cups. non drive came out fine, drive side stuck.
ended up using a hacksaw and file to make a keyhole slot and used steel bar to attempt to rotate it but it became evident it was overtightened or x threaded from the dealer or factory. i leaned into it with a 2 ft pipe before i decided to back off and rethink things
i called the customer and told them the price had gone way up because i risked damaging the frame and had to pretty much attack it with surgical precision and even at that it was a 50-50 chance of getting a decent outcome
mini sawzall and file and pick and a couple of hours later and all was good, dont have a bottom bracket that fit so i used another just to chase the threads after i followed the entire thing with a right angle pick to ensure any thread that was damaged was fixed to the best of my ability
sometimes these chinese produced bikes can wind up being more trouble then they are worth. in this case, if it wasnt close to 2k new and electric it would not be a sensible amount of money for them to dump into a repair. The parts spec is probably roughly equivalent to the lowest level of bikesdirect fat bikes And I can say after dozens and dozens Of bottom brackets that I have replaced, I have never encountered a trek/specialized/cannondale etc especially one without rust that I've required such drastic measures. the only other ones that have been an issue are the SE big ripper/om flyer etc That are kind of fun but generally built like garbage
interestingly enough, the big cat was a shengyi motor, though it was a bit odd to see it on the front (severely out of true) wheel
about 10 seconds of looking and i see about a centimeter of lateral play in the cranks
went to remove the cranks and the threads were stripped. the shaft also had several o rings on it which didn't look original at all. spoke to customer and it hadn't been serviced for anything related but had recently been to the dealer for a battery replacement
odds are they saw the issue and attempted a makeshift fix but couldnt nail it down because...
the shaft wasnt straight!
the hole in the cups had worn to an oval. awesome
went to use my park tool 36mm wrench to loosen the cups. non drive came out fine, drive side stuck.
ended up using a hacksaw and file to make a keyhole slot and used steel bar to attempt to rotate it but it became evident it was overtightened or x threaded from the dealer or factory. i leaned into it with a 2 ft pipe before i decided to back off and rethink things
i called the customer and told them the price had gone way up because i risked damaging the frame and had to pretty much attack it with surgical precision and even at that it was a 50-50 chance of getting a decent outcome
mini sawzall and file and pick and a couple of hours later and all was good, dont have a bottom bracket that fit so i used another just to chase the threads after i followed the entire thing with a right angle pick to ensure any thread that was damaged was fixed to the best of my ability
sometimes these chinese produced bikes can wind up being more trouble then they are worth. in this case, if it wasnt close to 2k new and electric it would not be a sensible amount of money for them to dump into a repair. The parts spec is probably roughly equivalent to the lowest level of bikesdirect fat bikes And I can say after dozens and dozens Of bottom brackets that I have replaced, I have never encountered a trek/specialized/cannondale etc especially one without rust that I've required such drastic measures. the only other ones that have been an issue are the SE big ripper/om flyer etc That are kind of fun but generally built like garbage
interestingly enough, the big cat was a shengyi motor, though it was a bit odd to see it on the front (severely out of true) wheel
