bike generator

This video shows how the momentum from a flywheel can power an alternator on its own , for a brief period of time.
It was easy to make.
I started with a disguarded excercize bike with a flywheel, two sprockets from other regular bicycles,and a (blue) mini bicycle turned upside down , with the axles bolted together. And a disguarded motorcycle hub .
I used the same chain that came with the blue bike. And put a threaded rod through where the pedals were , with sealed bearings that i got from Lowes.
The threaded rod was 3/4(0.75) inches in diameter , but the bearings and the hub are 17mm (0.669 inches) so i filed it down by hand. After a few hours of filing i got the bearings and the hub to all fit on the threaded rod, and bolted it together.
On the alternator end , you can see a front bicycle sprocket with chain, that goes to another sprocket that is physically attached to the hub on the flywheel with three small machine screws.So when the flywheel is spinning the alternators are spinning , but the rider does not have to be pedaling constantly you can not see in the video that i have just stopped pedaling.
The alternators are axial flux , the one closest to the chain and sprocket is not finished in the video, the outer alternator( with the coils visible) is now a windmill .
There are 12 coils and 16 poles(32 magnets total) on that alternator and 24 poles(48 magnets total) on the one thats not finished.Still not finished but now it has some coils on it , so it sorta looks like the other one.
Both alternators have the same diameter magnets(0.875 in) and the coil diameter is twice the magnet diameter.

Category:

Howto & Style

Tags:

• bicycle
• generator
• alternator

[williiamb]

I've included a description of what is happening in the video.

[williiamb]

I found another video of my bike generator, but i cant seem to be able to post the link.

[glenisah]

Well my ceiling fan conversion was a dud. the measurements weren't worth remembering Or mentioning. So, I have a couple of questions about your axial flux design in this video if you don't mind answering them. It appears that you are using a single magnet rotor disk?. Are your stator coils cylindrical in shape? Air core or iron core?

Any details regarding construction would be appreciated. How much power are you generating under load?

Thank you in advance

Glenn

[williiamb]

There are two separate dual rotors on the bike in the video.The one at the top with the white plastic stator is the alternator producing power.There is also set of dual rotors closer to the bike,without any coils.

The alternator has 12 round 'disk' looking coils 1.5" dia and 16-0.875Dia. by 1/2 in. neodymium Mags per rotor.The dual rotor without any coils has 24-0.875Dia. x 1" cylinder neo mags per rotor.Air core. i have some graphs somewhere of the power output i'll look for them.

[matthewsolis247]

Gee thanks for showing us how its done in just 14 seconds! You could have said in the video description, "Bike generator with zero fucking information making this video a complete waste of fucking time!"

[atomicmatt3]

When the grid collapses, this guy will be one of the people that lives.

[itsandbits1]

@matthewsolis247

wow, do you need an anger management course. if you read the discription up above it is explained pretty well. It will stop pretty fast though if there is energy getting consumed from the generator

[itsandbits1]

@MyExplodingHorse

the flywheel keeps it going until friction or power consumption stops it

[discoide1451]

generator 24 v site weeb discoide1451

[kaizercharles]

Nice Video man!

It just create some of the kinetic energy stored in the flywheel.

Check out my video "Pedal Powered Flywheel Generator".

Cheers!

[briangunn21]

did you see it? that thing just turned multiple times...that was amazing

[Mappel2006]

The problem is the adaptation for normal use.

[josephdupont]

@glenisah tell me more about the ceiling fan.. if you just keep it 110 volts andpower it up first.

it shouold pump electrcity back in the grid.

[Gam3Junkie7]

The fact that something so simple could produce power makes me think: why the hell aren't there more alternative sources of power?

[MyExplodingHorse]

The bike chain appears to not be moving, leading me to believe it's a fake.