Hi. Will a fantic 80cc mono drag my 12 stone around a clubman route. I do have other bikes but this just looked like fun.

I'm not sure what the clubman line is but I had one of those and weigh about the same.  It did everything OK but go up hill.  It struggled on most any kind of a climb.  You could use the clutch to lift the front wheel for logs and things but even mild climbs were full throttle with the motor spun all of teh way up

I had a FM 330 50cc full size , And it only let me know what it was in 3rd gear and above ... Other than that like riding a bicycle  , with power assist .  It was a blast to ride .