Air cooled engine fan?

[Biker_Andy]

As long as your stator can handle the additional load. Could always buy a CSC 300W stator, that should have plenty of juice for a 12V fan or two.

[Megadan]

Originally Posted by Biker_Andy

As long as your stator can handle the additional load. Could always buy a CSC 300W stator, that should have plenty of juice for a 12V fan or two.

Stator... and flywheel, regulator/rectifier, CDI, and a bit of wiring to make it work.

Without directed airflow it's likely going to have very little benefit. This is why mower engines, and aircooled VW/Porsche motors have tins and shrouds to help keep the airflow in contact with the fins, and direct it around. In order to have a sufficient volume of air to actually be of some benefit, the fan would need to be of a decent size, something close to a motorcycle radiator fan, which will draw more current than the charging system on a Hawk can handle, going back to the above mentioned 300W stator becoming a bit of a necessity.

These little engines are pretty cool running anyways. Low compression and conservative ignition timing means that they don't produce too much heat. Lean fueling will be the real contributing factor. I intentionally set my idle mixture on the rich side for that very reason. It's not a cure-all, but it does help a bit.

If the concern is sitting still while idling for several minutes... don't. Hit the kill switch and shut the motor off. The electric start makes the practice of shutting down a breeze.

I have never once felt the need to install a fan on either of my Hawks, with or without said oil cooler, and we get pretty dang hot here in the summer AND I ride primarily in city for going to and from work with my Hawk.