Whaka Rongo Moari Song and Lyrics by dave Henere

Number 1 criteria in selecting a wind turbine

Propellor Length. The bigger the propellors the more power you can generate from the wind. So the number one rule of thumb is get the wind generator with the largest propellor. Ok why don't all wind generator manufacturers put huge propellors on their turbines? The answer is that they can't.
For a given alternator or motor, there is an optimum propellor length, to maximise the power that can be generated. Too short and not enough power is generated. Too long and the RPM starts to stall and slow down as well. The propellors must therefore be tuned to the motor and there is a maximum optimal length after which the output actually declines.
Knowing this we can now deduce that when choosing between wind generators we should look for the longest propellor in our price range. This is like choosing the largest horsepower motor for our money.

Connecting up your wind generator

Connecting up your wind generator to your battery bank or directly to the grid is not as easy as connecting up solar panels. I will be posting more on this topic soon.

RB900 Wind Generator

This is the RB900. The next version up from the RB200. Bram Waters first introduced the first version of the RB200 in 1995. Over the years he has sold over 300 units mainly to yacthies.
We decided to revive this model as the RB300. It has proven to be robust and people that have them attest to it's performance.
If our plans are on track we will be able to bring this product to market within 2 months. We would like to modify it to work on houses. It will need to be vibration free with low noise and small but able to produce 300 watts peak.
Keep a watch out for this unit.