Kryptonite Evolution Bike Lock Frame Mount

I struggled with the Kryponite frame mount so I decided to design my own (they really need to look at this again - it just doesn't work on a lot of bikes). D locks are way too heavy if you carry them in a rucksack, so I looked at mounting it on the bottle cage screws. The bar can easily go in a small under saddle bag but the D will fit inside the frame. The trick was to make it lock in so that it didn't rotate and fall to one side. The design is based around the Evolution Standard 14mm thick D l