Mountain Bike Motors

i have found out how to pun an engine on my bike . but how do i register it with the DVLA?
i have a dual suspention mountain bike with a “golden eagle” bike motor attached to it. but howdo i register this with the DVLA. its a 50cc motor. thanks for your answers
Almost certainly you can’t. It will be very difficult/impossible to meet the construction and use regulations foe a powered vehicle.
It used to be possible back in the 50s but that’s another era.
my 49cc motor on mountain bike settup! RUNS ON E85 n MYSTERY OIL!!( ride and lookie) UNIQUE!

