Magneto Generator Project Help

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chicken

New Member
Jul 3, 2021
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I've been messing with the white wire trying to hook it up to a light ever since I’ve built my MB. Eventually I gave up cuz it kept on killing the motor. Rather than stealing power from the spark plug's magneto, I decided to build my own generator instead.

I made it out of some wire (from an old electric motor) and thin sheet metal. After all that, much to my disappointment, it only produced a maximum of .32 volts. Did I ground it incorrectly? Is there something wrong with the wire? Or is it just a crappy idea?

Anyways, I'd really like this thing to work, and I appreciate the help I can get from you guys. Hope the pictures help and thanks in advance.
-Sean
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Larry Trotter

Larry Trotter

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Nov 26, 2017
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I think you have a good thought but your construction installation is just lacking some. The magneto generates the power by passing the magnets very close to the curved metal part of the coil which then induce voltage in the coil. Your design only has a very small area that’s close to the magnet. Also if you do manage to make one that is close enough it will also “steal” energy from the magneto unless you can manage to arrange it 90 degrees or so in relation to the the mag pickup.
 
C

chicken

New Member
Jul 3, 2021
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Larry Trotter said:
I think you have a good thought but your construction installation is just lacking some. The magneto generates the power by passing the magnets very close to the curved metal part of the coil which then induce voltage in the coil. Your design only has a very small area that’s close to the magnet. Also if you do manage to make one that is close enough it will also “steal” energy from the magneto unless you can manage to arrange it 90 degrees or so in relation to the the mag pickup.
Click to expand...
Ahh, i see. Thanks for the feedback, I'll just use a battery to power my lights for now :)
 
Greg58

Greg58

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May 1, 2011
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I’ve thought about the 12v to run flashing lights on the rear and a LED headlight, I’m thinking of using a small sealed battery to keep voltage consistent.
 
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Larry Trotter

Larry Trotter

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I am sorta thinking that the ignition module may only use one half of the AC the magneto generates if it used both halves then it wou spark twice per revolution and it doesn’t. If that’s the case then you should be able to use the other half with the white wire without killing the ignition. Just put a diode in the line in the proper direction. I will do a little experiment and see.
 
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Testname111

Testname111

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May 20, 2021
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Cool tip

Use this 12v AC power coil.... Looks cheap I know

Amazon.com : GasBike 12v Generator for Motorized Bicycles, 48cc 66cc 80cc : Sports & Outdoors

Amazon.com : GasBike 12v Generator for Motorized Bicycles, 48cc 66cc 80cc : Sports & Outdoors
www.amazon.com


Connect to this rectified bridge
Cable Wire: Red to usb +, Green to usb -, Yellow and Pink AC input, connect to magneto coil a/c ground and coil

Amazon.com: 1PZ RV2-W04 4 Wires Voltage Regulator Rectifier for Motorcycle Boat ATV GY6 50 150cc Scooter Moped JCL NST Taotao: Automotive

Buy 1PZ RV2-W04 4 Wires Voltage Regulator Rectifier for Motorcycle Boat ATV GY6 50 150cc Scooter Moped JCL NST Taotao: Rectifiers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com

This USB or USB of choice


Step last connect to backup battery or phone
 
Testname111

Testname111

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May 20, 2021
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Anything a/c rectified will always be cut in half example
12v a/c - 6v d/c
24v a/c - 12v d/c
 
Testname111

Testname111

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May 20, 2021
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CDI
www.bikeberry.com

BBR Tuning Volt Master High Performance Racing CDI (Stage 1)

Tired of your engine not starting every time you need it to? Need a more consistent spark than that stock CDI's giving you? Increase your spark and finally fix the timing issue most CDI's have with the BBR Tuning Volt Master High Performance Racing CDI (Stage 1). The reason most engines don't...
www.bikeberry.com www.bikeberry.com

Coil I use - note: this coil,s 12v will NOT power USB propperly only other coil will the cheap one I mentioned

www.bikeberry.com

BBR Tuning 12v High Performance 2-Stroke Stator Magneto

Tired of running the lights and accessories of your motorized bike off batteries? If you've always wanted to run an accessory off of your 2-stroke bike engine like mopeds and motorcycles can, you want the BBR Tuning 12v High Performance 2-stroke Stator Magneto. While this magneto will give you a...
www.bikeberry.com www.bikeberry.com
 
Testname111

Testname111

Active Member
May 20, 2021
350
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chicken said:
I've been messing with the white wire trying to hook it up to a light ever since I’ve built my MB. Eventually I gave up cuz it kept on killing the motor. Rather than stealing power from the spark plug's magneto, I decided to build my own generator instead.

I made it out of some wire (from an old electric motor) and thin sheet metal. After all that, much to my disappointment, it only produced a maximum of .32 volts. Did I ground it incorrectly? Is there something wrong with the wire? Or is it just a crappy idea?

Anyways, I'd really like this thing to work, and I appreciate the help I can get from you guys. Hope the pictures help and thanks in advance.
-Sean
View attachment 107954
View attachment 107951
View attachment 107952
View attachment 107953
Click to expand...
You need more steel stacks to transfer the magnatizum, magnetic energy
 
Larry Trotter

Larry Trotter

Well-Known Member
Nov 26, 2017
476
306
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77
Testname111 said:
Anything a/c rectified will always be cut in half example
12v a/c - 6v d/c
24v a/c - 12v d/c
Click to expand...
Not true. Peak to peak AC voltage is 1.4 times the RMS “root mean square” voltage. So rectified ac will be higher than half the rms value of the measured ac.
 
Testname111

Testname111

Active Member
May 20, 2021
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Well my multimeter said 6v DC after rectification and my phone chargers, that's all I wanted really
 
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