They do make trailers for bicycles, and they generally have two wheels. So, it should be possible to put a flywheel (assume TwinFlywheel, per link) system in a bicycle trailer.

And, some things can be simplified, because the bicycle itself doesn't need much modification beyond adding the trailer hitch. The trailer itself can have the electric motor/generators in its own wheels, and can push the bicycle. An extra cable that reaches to the bike handlebars can allow the rider to activate regenerative braking on the trailer (rider doesn't use the bicycle brakes except in emergency), when the cable isn't acting as a throttle.
-- Vernon, Apr 14 2012

TwinFlywheel TwinFlywheel
As mentioned in the main text, this reduces overall vehicle weight because this gadget is not just two flywheels; it is also a motor/generator [Vernon, Apr 14 2012]

Bicycle Parasol Flywheel Flying toaster's idea [pashute, Apr 16 2012]

Working flywheel bicycle http://www.youtube....watch?v=BOnjtEKArXk
[pashute, Apr 16 2012]

The Gyrobike http://www.thegyrobike.com/
Electric gyro training wheel replacement [pashute, Apr 16 2012]

Gyro-Trailer http://www.youtube....watch?v=8diGKdBzVjw
Well... not exactly Vernon's idea [pashute, Apr 16 2012]

Electric bike pusher http://www.youtube....watch?v=0O5frd2NYj4
You mean like this only with a gyro instead of an electric motor [pashute, Apr 16 2012]

or this http://www.youtube....0LU&feature=related
[pashute, Apr 16 2012]

[+] well sure if you want practicality, but my flywheel parasol idea is prettier.
-- FlyingToaster, Apr 14 2012


Does it come in blue?
-- saedi, Apr 16 2012


Is it going to make up for the weight of the trailer though.
-- FlyingToaster, Apr 16 2012



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