Using a car alternator with a bike to power my home? How much energy can I produce!
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Date: 2021-05-09
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Comments and reviews: 9
Felipe2077
It seems like there was a lot of inefficiencies with your system that could have drastically improved the performance. Reduce belt slip, stabilize the bike more, using a boost converter to charge a battery (with a varying current output that can be changed using a potentiometer, to change how much resistance you want) adding a weighted flywheel to make pedalling easier (commonly found on stationary exercise bikes, as well as messing further with the exciter windings further.
I'd personally be interested in seeing you getting this project working better. Most people can pedal at around 250watts, and since you got nowhere near that output, there's a lot of improvements that can be made.
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It seems like there was a lot of inefficiencies with your system that could have drastically improved the performance. Reduce belt slip, stabilize the bike more, using a boost converter to charge a battery (with a varying current output that can be changed using a potentiometer, to change how much resistance you want) adding a weighted flywheel to make pedalling easier (commonly found on stationary exercise bikes, as well as messing further with the exciter windings further.
I'd personally be interested in seeing you getting this project working better. Most people can pedal at around 250watts, and since you got nowhere near that output, there's a lot of improvements that can be made.
reply
1001
I tried this years ago using an exercise A frame to mount my bike on, I took off the fan which was to create ressistance and replaced it with a car alternator driven directly off the back wheel of my bike and a hard rubber wheel on the alternator pulley this was connected to a battery as it would have been on a car and with a bulb to show it was charging, I managed to get 2 amps out of this set up but as it felt like riding up a steep hill all the time I decided that I was not fit enough for it to be practical and gave up.
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I tried this years ago using an exercise A frame to mount my bike on, I took off the fan which was to create ressistance and replaced it with a car alternator driven directly off the back wheel of my bike and a hard rubber wheel on the alternator pulley this was connected to a battery as it would have been on a car and with a bulb to show it was charging, I managed to get 2 amps out of this set up but as it felt like riding up a steep hill all the time I decided that I was not fit enough for it to be practical and gave up.
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Bryan
I wonder how much the overall-efficiency would increase FOR YOU if a financially-challenged input energy source was mounted into a centrally located position in space relative to the mechanism, just below a stick-like overhead support-extension that extends just out of reach of the observer to a point to which then had a suitable fiber-based retention mechanism to support and suspend a Logic-Analyzing MSO in a non-conductive but very emotionally-Inducting way. Lets call it an Enticer/Induction drive.
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I wonder how much the overall-efficiency would increase FOR YOU if a financially-challenged input energy source was mounted into a centrally located position in space relative to the mechanism, just below a stick-like overhead support-extension that extends just out of reach of the observer to a point to which then had a suitable fiber-based retention mechanism to support and suspend a Logic-Analyzing MSO in a non-conductive but very emotionally-Inducting way. Lets call it an Enticer/Induction drive.
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j031drumr
You could Install a belt tensioner pulley to keep it from slipping. And i wonder if starting the exciter with a 9v battery then adding a relay that powers the exciter with generated current. The more you generate the harder it feels and if you stop it falls back on the 9v. Then maybe a variable resistance circuit to control the exciter current and adjust the pedal torque needed
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You could Install a belt tensioner pulley to keep it from slipping. And i wonder if starting the exciter with a 9v battery then adding a relay that powers the exciter with generated current. The more you generate the harder it feels and if you stop it falls back on the 9v. Then maybe a variable resistance circuit to control the exciter current and adjust the pedal torque needed
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ROB
I have made a hand powered generator which I can get over 350 watts going all out. I can generate about 200 watts constantly for a couple of minutes. I had to wind my own coils and had to buy a 3D printer to make the rest. At first I tried off the shelf parts and could never get above 30 watts. You need to start from the beginning and start small.
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I have made a hand powered generator which I can get over 350 watts going all out. I can generate about 200 watts constantly for a couple of minutes. I had to wind my own coils and had to buy a 3D printer to make the rest. At first I tried off the shelf parts and could never get above 30 watts. You need to start from the beginning and start small.
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MC's
Pretty fantastic work, dude!
You know, I was searching about alternators with permanent magnets while watching the video. And for my surprise they don't seem to be common! At all!
What I've found the most were projects of how to build one to use as a generator for a wind turbine. Pretty weird!
Anyway, stay safe and creative there!
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Pretty fantastic work, dude!
You know, I was searching about alternators with permanent magnets while watching the video. And for my surprise they don't seem to be common! At all!
What I've found the most were projects of how to build one to use as a generator for a wind turbine. Pretty weird!
Anyway, stay safe and creative there!
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tt
Older cars came with generators, which may give you a head start but may not be ass efficent due to dated design. There are many types of alternators, with and without internal regulators. External regulators are fairly basic and diagrams are readily available. There are also kits to add permanent magnates to several popular alternator models.
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Older cars came with generators, which may give you a head start but may not be ass efficent due to dated design. There are many types of alternators, with and without internal regulators. External regulators are fairly basic and diagrams are readily available. There are also kits to add permanent magnates to several popular alternator models.
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Steve
The exciter coil can be handled by a small solar panel and the rest turned by a wind turbine. During the night the battery being charged can execute the coil when the wind turns at a given speed. Alternatively replace the exciter coil with magnets and you have a decent wind turbine. No more cycling to generate energy for your home.
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The exciter coil can be handled by a small solar panel and the rest turned by a wind turbine. During the night the battery being charged can execute the coil when the wind turns at a given speed. Alternatively replace the exciter coil with magnets and you have a decent wind turbine. No more cycling to generate energy for your home.
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Ted
I'm sure 7, 000 people have already brought this up, but every car I've seen uses a spring-loaded idler pulley to keep tension on the alternator/accessory belt. Doesn't change the necessity for the exciter power, though. I guess having both a generator AND alternator attached would add too much resistance pedaling, too.
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I'm sure 7, 000 people have already brought this up, but every car I've seen uses a spring-loaded idler pulley to keep tension on the alternator/accessory belt. Doesn't change the necessity for the exciter power, though. I guess having both a generator AND alternator attached would add too much resistance pedaling, too.
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