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Hi Chris and Leif,

ok, sounds perfect, so I just go to take my calculator. Hope I didn’t forget the math since the school, it’s already some time.
I created some autocad drawings to make both, drive brackets and the drive wheel holder. Standard holder of the cowey is for a bit smaller hubs, so I had to create “in between” wheel attached to the sprockets holes and into the outside ring threads to attach the cog wheel it self. Same with the drive bracket. I made it in two parts and will drill exactly by the dimension on the bike. If you are not in a hurry, I will make the pictures when I will finish the work and I could send you my drawings, you will see if you like it and if you use it as it is or if you need longer bracket.

Thanks, best regards,