Sears roper wheel and brake question

[c4mo]

I have a 6 inch wheel model, no jack shaft and scrub brake. My question is can the bigger roper wheels be used on this frame or other larger ones? Also is there any common disc brakes that have been adapted to a roped, whether 6 in wheels or bigger? Thanks

 

[chipper]

Nice to see you active ! Post pics it will help us help ??

 

[creia]

Install a clutch band brake and use your scrub brake as the back-up (emergency) brake if you break a chain.
Michael