A what? I'm trying to build a hybrid, and I've found that gas scooters are extremely unreliable while electric scooters are very reliable, but I like to go farther than the batteries will allow. I have access to welding equipment, tools, electric motors that can be used as generators and a couple 4 stroke engines, so I decided to have a bit of fun extending the range of my electric scooter.I hope you are not hoping to create an over-unity scooter.