PV Gap

Nathan Said:

How to build a solar powered oxygenator...?

We Answered:

Try out these web sites, it may help you with your question.

ROSCooooooooooooooooooooooooooooooo

http://search.yahoo.com/search;_ylt=AgSR…

James Said:

How to build a solar-powered water heater in simple steps?

We Answered:

The details are complicated, requiring thermostats and heat exchangers that differentiate the solar heated water temperature and the storage tank temperature so as not to transfer the heat backwards. But for the absolute basics, black painted radiators will heat up from the sun, this can then be used directly.

Karl Said:

how to build a solar powered go kart?

We Answered:

First of all, have a look at some electric scooters. Vego ones for example. That';s the basic idea of electric vehicle, putting this on 4 wheels won't be hard.
You need lightest frame you can get. Aluminium or Carbon Fibre. Steel will be too heavy.
You need an electric motor and all the required controls. That's not an issue, there's plenty of stuff around. You can use 2 motors from electric scooters and link them face to face, reversing the polarity on one of them. Easiest to make it rear wheel drive, using bike chain or belt drive. This will also allow you to play with gear ratios-very handy Torque VS speed adjustment.
Now the main problem: How to power it.
You can have batteries (in case it's foggy and cloudy or you wanna use it at night). You can have those batteries charged with solar panels.
Here is the main design problem: How many panels will you need to charge the batteries? How many hours will it take to charge the batteries? And, most importantly, how big do you need the panels? Solar panels do not provide high currents or voltages, so you're gonna need many of them. How many? depends on the voltage of a motor, electric scooter motors are happy with 24 or 36 volt power. So, let's say you get 12 volt solar panels, such as this one: http://www.jaycar.co.nz/productView.asp?…
just by doing your maths, you can figure out how many you will need. You will have to connect them to a voltage regulator, to provide steady voltage to charge each battery and to power the motor.
You may find that you will need MANY panels to charge the batteries for a whole day to power your go-cart that can only go 35km/h for a few hours. The size of the solar panel arrangement may exceed the size of the go-cart, making it unpractical. You might as well make a solar powered car.
So: Solar panels, batteries, charging systems, electric motors. Research this stuff.. Oh, and gear ratios :)