first Hybrid gas/electric scooter

[hybrid fanatic]

I just put together a mobility scooter that runs on gas and batteries, i need some ideas on how to use the electric motor as a generator to recharge the batteries when riding on gas, also the best way to keep the motor temperature cooler. any input will be greatly appreciated.
i made a video about how it was build:

https://www.youtube.com/watch?v=JVWqft07fMo

<iframe width="560" height="315" src="https://www.youtube.com/embed/JVWqft07fMo" frameborder="0" allowfullscreen></iframe>








View attachment 12















View attachment 4










for the hell of it below is the youtube link to my other project i really want make some kind of cooling system for the motor.

https://www.youtube.com/watch?v=MyGBqEo2ZXw

 

[amberwolf]

Assuming parallel hybrid here, so that the gas engine directly drives the wheels, and so does the electric motor:


Looks like a brushed motor, so if there's no freewheel on it and the motor turns all the time when the wheels turn, then if your controller does regenerative braking, you just turn on that braking and then it will recharge the batteries as long as you're going fast enough to have the motor voltage output higher than the battery voltage. .

The catch is it will also heat up the motor and controller--how much, I don't know; you'd have to test it while measuring that temperature.

The farther down the batteries are, the worse the heating will be.

It'll also slow you down--and if the electric motor is only on one wheel, it's also going to brake-steer you.

 

[Hillhater]

Interesting.
..but hard to answer questions when you omitted to say what motor ....(or controller, or battery set up) ..you are using !
Which motor do you want to cool ?..gas or electric ?

 

[hybrid fanatic]

the motor is the original 24 volt 3700 rpm that came with the mobility scooter, the controller is that 48 volt 50amp from electric scooter parts , and 4 12V 12 Ah SLA battery pack i know... i know...nothing fancy , but I already have another scooter that is much much beefier with suspension and all, i'm going to get serious with that one, i'm still doing research on what motors and controller im going to get, i'll probably make my own battery pack. my goal with that one is to have an electric motor with the same ratings power each wheel with different gear ratios, one low end and the other high end. take off and get to max speed then by using a simple DDP DDT swicht to the other motor that has a higher gear ration hoping to achieve pretty good speed without burning the sucker, cuz trust my i just burned my 48 volt 1000w unite POS motor.
A friend of mine told me i need a controller that has regenerative braking feature but i dont know, if i have to spend money on another controller that has that feature it will be for the next scooter.