hywind portable wind turbine

[vernon]

would a small fan cause any great drag on a relatively slower tour bike ,

considering your sitting up most of the time or on an urban mtb machine ?

if power output is as weak as you guys say its pretty much a waste of time

A 40mph wind is needed to generate at a 1W power output.

Admittedly the drag caused by the fan will be insignificant but at touring speeds the power output will be insignificant.

 

[sabian92]

Somebody had one of these on Dragon's Den and was essentially laughed at as they couldn't get the thing to even move.

 

[Danny]

would a small fan cause any great drag on a relatively slower tour bike ,

considering your sitting up most of the time or on an urban mtb machine ?

if power output is as weak as you guys say its pretty much a waste of time

I agree you won't get too that much drag, but you almost certainly won't get much useful power either. You are probably better off with a solar powered battery charger.