Kryptonite bike lock tugblock buckle
Description
Replacement tugblock buckle for the Kryptonite Transit FlexFrame U-Bracket bike lock frame mount. Useful if you lost the tugblock (metal buckle) and nylon strap at 0:34 in https://www.youtube.com/watch?v=lULcuifzxPs&t=0m34s (official installation video from KryptoniteLocks) but have the other parts. Parts required: - Bracket body from the original Kryptonite mount (both pieces) - M4x20 bolt - M4x12x6 heat set insert - Zip ties 8" (2) Installation instructions: 1. Insert the printed part into the bracket body, with the hole visible through the other end Note: will be a tight fit, using a heatgun to soften up the part may be helpful 2. Insert the heat set insert into the hole by heating up with a soldering iron 3. Attach the other piece of the bracket body, and screw in the bolt - it should fit securely 4. Insert zip ties through the slits on the other end, and loop through your frame See also other designs, and how this one differs: [Kryptonite bike lock holder](https://www.thingiverse.com/thing:4384624) - slides into the shackle instead, using no parts from the original mount. I tried this design first but found it limiting due to requiring an offset mount - the official FlexFrame mount supports many different positions, which are possible with my replacement tugblock - as long as you have the other parts. [Kryptonite lock adapter for bicycle rack](https://www.thingiverse.com/thing:4950243) - only interfaces with half of the bracket body (and is designed for a rack), vs mine which requires both pieces. Notes: The hole is sized to accept a brass heat set insert for a M4 bolt, not a bolt by itself. First design allowed threading the bolt directly into the plastic, but this wasn't secure enough in my testing. Using a threaded insert adds significant amounts of rigidity. YMMV.
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