Hello all,
I bought a used bike (test bike) from the vendor. After roughly two months the left pedal fell off (see screenshots). I have not disassembled the pedal but I have tightened both pedals in this time frame because I noticed they were getting loose.
Anyway, when I look at the thread it seems to be damaged. My theory: some time during the testing phase the pedals were switched and forcefully mounted damaging the thread. I am discussing a replacement with the vendor. What is your perspective on this?
by NoGuide1723
4 Comments
This indeed looks very similar to a cross threaded pedal. Is the pedal in the right side marked with “right” or “R”? If not, the threads on the pedal may have stripped the threads on the crank from being opposite.
This sort of thing *can* be as simple as a pedal that did not remain in the threads fully, then backed out, then wrought havoc on the end threads as the pedal came out under force. If you really do suspect cross threading, then look for X-like marks in the threads. It is pretty difficult to wrongly thread in a pedal during assembly.
A set of heely coils and new pedals will fix this real quick
If it’s a vendor issue they owe you a replacement crankarm. if they were loose enough that they held an angle when re-tightening you owe yourself a replacement crankarm