it's a bust
I was going to mount a liquid cooled 49 cc engine to my mountain bike.
Since the pump would run via a sprocket along the chain.
My overall concern was that in idle the liquid pump was not running.
If I were to idle too long in the summer I could blow a gasket or send the spark plug flying out.
It's too much to worry about.
I am going to trade this engine for an air cooled version.
Nothing is welded in place yet and I've changed bicycles.