Solar Panel wattage for my Electric Bike?

www.jkrish

I am looking to purchase an Electric Bike for transport to work. I work on an Organic farm and need to save some energy up those hills.

I need help figuring out what size solar panels would be needed to charge the battery, and whether its plausible.

I'm looking at Ebay in Australia as I am immigrating down there. I prefer to afford the foldable/portable solar panel system: 80 watt, 120 watt, 160 watt, but IF necessary a bit more.

300w 3 PHASE 36v ELECTRIC REAR WHEEL
THREE 12v 17ah SLA BATTERIES (Total 36v)

or

Motor: 250 Watt brush-less DC hub
Batteries: 24V/10Ah pack, valve regulated

can anyone out there help explain to me how to figure this out?

thanks :)

Answer
You will want to have some sort of voltage regulation.
If the panel voltage drops off you don't want to discharge the batteries on your bike.
And you would not want to overcharge your batteries.

Harbor Freight has a fold out 18 to 24 vdc solar recharger.(see link)

For a work/home commute you might not want to haul the charger around everyday.
Ask the folks at the farm if you could set up a solar charging station. They might even help.
I'd suggest a bicycle locker that has the panel on top and a couple spaces for bicycles with charging stations inside, out of the elements. Your employers may like the idea.

Electric Bikes: Car replacements? Yes/No?

northernwi

The higher end electric bikes get like 40 (perhaps more) miles with assistance. I figure, if you carry two of those (maybe one in the backpack), theres really nowhere the *average* person goes on a regular basis that wouldnt fall within an 80 mile round trip. Hills are way easier, and you wont get sweaty (if you get sweaty on a normal bike commute, that is)

There are things cars are very good at, transporting big items or multiple people, but for every day - mundane situations, do you think electric bikes could be a good alternative for most people who arent morbidly obese?

I personally think so! Its also a very green way to go about things.

Answer
Absolutely! Electric bikes are a great alternative to cars for people who wouldn't ordinarily ride a bicycle. They could replace a great deal of car traffic. A bike trailer or cargo bike/trike configuration helps address cargo needs.

This is a dealer of electric bikes and vehicles near me...have a look to see what types of products are currently available and how they could be improved:

http://www.smallplanetevehicles.com/

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