Is a flywheel necessary?

[machinebike]

for a two stroke if there is another spark source, Like the rc airplanes?

Does a one way bearing work while on shaft and used by a drill to turn engine?

 

[Bigger the Better]

There are starters that will allow you to use a drill but I would ask, why? Pull the rope instead of adding extra weight and extra money.

http://www.davesmotors.com/s.nl/c.885035/n.1/it.A/id.6037/.f

The flywheel is needed because it cools the motor. Without it you will over heat.

 

[Sharkey]

a flywheel smooths out the engine and helps keep it running at low rpm. with a plane the prop can act as the flywheel, along with a plane generally doesn't see much transition from idle to on throttle, not nearly what a car or boat would. the last thing, the flywheel also provides cooling.

 

[machinebike]

a flywheel smooths out the engine and helps keep it running at low rpm. with a plane the prop can act as the flywheel, along with a plane generally doesn't see much transition from idle to on throttle, not nearly what a car or boat would. the last thing, the flywheel also provides cooling.

I understand, wasn't sure about how a plane engine balanced but the prop explains it.