Looking for some help for my project does anybody make a bolt on 60T "flat" sprocket to use with a 6" Astro wheel. I'm wanting to use a 5.30/4.50-6 rear tire on a 6" Azusa Astro wheel with a 60T sprocket and I want to use the OldMiniBikes clutch brake so I was wondering if somebody knew of a sprocket without a drum or am I looking for something that don't exist.