I bought a bike lock online but the provided mounting bracket was not designed for a flat tube frame. It scratched the frame and could not fit anti-slip nuts. After a few days of riding, the bracket would be loose and continue to damage the frame.
February 2019
As the provided bracket was designed for round tubes, when it was attached to a flat tube frame, it scratched paint and chipped the frame
The provided bracket could not accommodate anti-slip nuts. After a few rides, the bracket would work itself loose and therefore required constant maintenance
The frame of the bike would not accommodate the bike lock and water bottle cage at the same time.
The final design solved all of the issues with the provided bracket. It has been attached to the bike for over a year and has been operating as expected with no need for maintenance.