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Discussion Starter #1 (Edited)
An electric bicycle that works like a Volt

The equivalent of a volt in a bicycle.
http://bike2.dk/wp02/
http://www.theverge.com/circuitbreaker/2016/5/9/11643878/chainless-electric-bicycles-are-probably-on-the-way

Result is a chainless electric bike, with no connection between the pedals and the wheels. When you pedal it generates electricity to drive the motor or charge the battery.

In a volt the generator is the ICE and the ICE can be used to generate electricity for the motor or for the battery allowing a more efficient use of the ICE.
In a Bicycle, you are the Generator.

In a traditional electric bike in pedal assist mode, you need to constantly change gears to maintain comfortable pedaling cadence in any conditions. .
With this new setup, you could pedal at the pace where you are the most efficient, and let the battery store or distribute the extra energy produced or needed.

Not a lot of information available yet, but I am curious at what kind of electricity generation one could get with the proper pedaling generator and how the efficiency compares with direct chain drive.

Intriguing :)
 

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Actually it has been done before...:rolleyes:

Hidden motors for road bikes exist — here’s how they work
http://cyclingtips.com/2015/04/hidden-motors-for-road-bikes-exist-heres-how-they-work/

Tour de France 2015: Cycling fears 'mechanical doping' poses increased threat to sport
http://www.telegraph.co.uk/sport/othersports/cycling/tour-de-france/11712225/Tour-de-France-2015-Cycling-fears-cheats-have-a-new-weapon-mechanical-doping.html

A 19-year-old Belgian cyclist got caught cheating at the world championships after racing a bike that had a motor hidden in the frame
http://www.businessinsider.com/bike-investigated-technological-fraud-cycling-world-championships-cyclocross-2016-1
 

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Actually it has been done before...:rolleyes:

Hidden motors for road bikes exist — here’s how they work
http://cyclingtips.com/2015/04/hidden-motors-for-road-bikes-exist-heres-how-they-work/

Tour de France 2015: Cycling fears 'mechanical doping' poses increased threat to sport
http://www.telegraph.co.uk/sport/othersports/cycling/tour-de-france/11712225/Tour-de-France-2015-Cycling-fears-cheats-have-a-new-weapon-mechanical-doping.html

A 19-year-old Belgian cyclist got caught cheating at the world championships after racing a bike that had a motor hidden in the frame
http://www.businessinsider.com/bike-investigated-technological-fraud-cycling-world-championships-cyclocross-2016-1
Your examples are nothing like the product referenced.
 

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I was thinking the same think (been there, done that), but then I looked, and wow!, that's really interesting. And a 50W solar panel hanging out the back might make it even more so.
 

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Discussion Starter #5
Actually it has been done before...:rolleyes:

Hidden motors for road bikes exist — here’s how they work
http://cyclingtips.com/2015/04/hidden-motors-for-road-bikes-exist-heres-how-they-work/

Tour de France 2015: Cycling fears 'mechanical doping' poses increased threat to sport
http://www.telegraph.co.uk/sport/othersports/cycling/tour-de-france/11712225/Tour-de-France-2015-Cycling-fears-cheats-have-a-new-weapon-mechanical-doping.html

A 19-year-old Belgian cyclist got caught cheating at the world championships after racing a bike that had a motor hidden in the frame
http://www.businessinsider.com/bike-investigated-technological-fraud-cycling-world-championships-cyclocross-2016-1
I think you are confused :)
What you are speaking of are regular motors hidden in the frame to assist, they are the same as regular ebikes just hidden.
The product I referenced is about getting rid of the direct connection between pedaling and the wheel, and using pedaling just to harvest electricity.
 

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Nothing like defeating the purpose :)

bi·cy·cle
ˈbīsək(ə)l/
noun
1.
a vehicle composed of two wheels held in a frame one behind the other, propelled by pedals and steered with handlebars attached to the front wheel.
 

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It's a nice piece of engineering, but once the battery is dead this will be a real slug. You will have to generate electricity with your legs, with limited efficiency, and transmit that energy to the motor in the rear wheel, to be converted to motive power, with losses all along the way. The traditional bicycle drivetrain is one of the most efficient pieces of machinery in existence, and this replaces it with inefficiencies at every step, and a heavy bike to move with that.

The more normal Pedelec set up, pedals and chain or belt, with selectable ratios, at least transmits your own energy directly to the road with little loss, and the battery and motor provide a boost on top of that.
 

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^ I agree. Any loss of efficiency will be very noticeable on a bike, and discouraging to the rider, because a bike is slow and takes a lot of effort to begin with. But strictly within the electric range, it might be a nice ride.

I have always wondered about all the energy that people put into exercise bikes that just gets wasted, and how it would be nice to put it to use somehow. This is kind of like that. Pedal at the exact speed and resistance you are comfortable with and let the battery make up the difference.
 

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It's a nice piece of engineering, but once the battery is dead this will be a real slug. You will have to generate electricity with your legs, with limited efficiency, and transmit that energy to the motor in the rear wheel, to be converted to motive power, with losses all along the way. The traditional bicycle drivetrain is one of the most efficient pieces of machinery in existence, and this replaces it with inefficiencies at every step, and a heavy bike to move with that.

The more normal Pedelec set up, pedals and chain or belt, with selectable ratios, at least transmits your own energy directly to the road with little loss, and the battery and motor provide a boost on top of that.
All true, but... now you won't have to roll up your right pant leg anymore ;)
 

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Discussion Starter #10
All true, but... now you won't have to roll up your right pant leg anymore ;)
They have carbon belts to replace chains now, combine with internal geared hubs and or internal geared bottom brackets.
Internal geared hubs & Bottom Brackets remained limited in use with regular bikes because they are more expensive and take a small efficiency hit, but on an Ebike that does not mater nearly as much, so I think they will see a new life.

Having a bike with no derailleur, chain tensioner and a carbon belt is so much simpler, cleaner, and easier to use & maintain :)
 
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