Re: ozark Mt. newbie w/ hydabike
Hi and welcome, If you go with a 2 stroke realize that most of the ones used on bicycles have a shaft smaller than the 3/4" usually required for a comet CVT. You will likely need an adaptor or shims to fit the driver on the output shaft plus the CVT back plate uses a bolt pattern designed for the 4 stroke engines. You can fine small scooter CVTs that will bolt to most engines with the 76mm clutch. These reverse rotation and drive on the right.
The kill switch on the brake would be a nightmare, at slow speeds it would be too much drag,doesn't sound like a fun way to ride at all. Keep us posted on what you do. This place is full of new ideas and experimentation.