Has anyone here tries or have any information on the use of band brakes on the rear of a motorized bicycle?

[Benchdweller]

There’s no room for a disc on my adaptor. This is what it looks like

CDHPOWER Adapter and Sprocket 36T for Mag Wheel-Motorized Bicycle https://www.amazon.com/dp/B06XKJT29J/ref=cm_sw_r_cp_api_i_.p9oFbGKSHZVS


Oh those aren't for adding disk brakes.
If you are trying to mount a sprocket and disk brake rotor together you want this adapter. But then you need a compatible sprocket.