also as other have suggested, it can be the bearing and hub.
Sometimes heavily worn bearings can crumble. Also cages can become chewed up. this and dirt getting in can cause the surfaces inside your hub to become pitted, causing friction and a clicking/scraping sound when the wheel is turned (especially with the force of a pedal)
If your cones and locknuts arent sufficently fixed in their position they can actually tighten as you ride. Becoming super tight and compounding bearings hard into your hub.
is this a dicta freewheel?
They wear out pretty easy and become rattly.
also as other have suggested, it can be the bearing and hub.
Sometimes heavily worn bearings can crumble. Also cages can become chewed up. this and dirt getting in can cause the surfaces inside your hub to become pitted, causing friction and a clicking/scraping sound when the wheel is turned (especially with the force of a pedal)
If your cones and locknuts arent sufficently fixed in their position they can actually tighten as you ride. Becoming super tight and compounding bearings hard into your hub.