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Brian
I live about 2 miles from work, and have a bike path directly to the office. I want to get an electric bike or convert my beach cruiser to an electric bike. Thoughts on this? Suggestions?
Answer
Only two miles I would just ride my bike. Get a hybrid bike and enjoy the ride.
Only two miles I would just ride my bike. Get a hybrid bike and enjoy the ride.
Can the pedaling energy charge the battery of an electric bike?
Drowzzy
Can the mechanical energy of pedaling be stored as electrical energy to be utilized later to run the bicycle automatically? I'm not talking about pure electric bikes that need regular charging, and not even about those that you pedal for a while as the bike stands still and then run it on electric power. I mean can you ride a bike and store the mechanical energy simultaneously? Will it be efficient? If so, then are such e-bikes available in the market, and what are they called so that I may Google for them?
Here's the scenario: I need a bicycle for regular commute, may be even for covering long distances. It's not feasible for a layman to pedal continuously for more than 5 to 10 miles. So I'm looking for a bike that you pedal for sometime, and when you're exhausted, you simply flick a button to make it run on electrical power which has been converted and stored from the mechanical energy of pedaling the bike; and then pedal again and auto-ride again and so forth. Will something like that be technically efficient, since you're moving the bike while pedaling as well as storing your spare energy?
Hope I haven't confused you. Thanks :)
Answer
Yes, it can!
Electric cycles are readily available. You normally charge them from a mains supply and then you can part-pedal / part-drive them on your commute. You can often adjust the amount of assistance to be supplied by the motor enabling you to go faster but less far or vice versa. If you want to pedal the bike and store 50% (say) of your energy for later you can do so but you will be doing double the work when pedalling, so your commute will be, so to say, twice as hard or half as fast and take twice as long. That doesn't seem to make much sense, especially since electric cycles are heavy and pedalling them (with no motor assistance) even without any of your energy going to storage, will be quite slow and tediously tough.
What an electric cycle does do is re-charge the batteries when you go downhill giving you back at least a good fraction of the energy expended in climbing up. But that produces a braking effect and the speed of descent is reduced. What inevitably goes lost is the energy taken by friction and wind resistance. Storing and using later is also subject to a degree of loss.
In short, if you don't want to use a commercial energy source to "fuel" your bicycle, get a conventional one - you'll do vastly better.
Yes, it can!
Electric cycles are readily available. You normally charge them from a mains supply and then you can part-pedal / part-drive them on your commute. You can often adjust the amount of assistance to be supplied by the motor enabling you to go faster but less far or vice versa. If you want to pedal the bike and store 50% (say) of your energy for later you can do so but you will be doing double the work when pedalling, so your commute will be, so to say, twice as hard or half as fast and take twice as long. That doesn't seem to make much sense, especially since electric cycles are heavy and pedalling them (with no motor assistance) even without any of your energy going to storage, will be quite slow and tediously tough.
What an electric cycle does do is re-charge the batteries when you go downhill giving you back at least a good fraction of the energy expended in climbing up. But that produces a braking effect and the speed of descent is reduced. What inevitably goes lost is the energy taken by friction and wind resistance. Storing and using later is also subject to a degree of loss.
In short, if you don't want to use a commercial energy source to "fuel" your bicycle, get a conventional one - you'll do vastly better.
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Title Post: What are your thoughts on an electric bike vs. an electric wheel conversion?
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