PV Gap

Sue Said:

Remove oil and world peace follows?

We Answered:

Remember that economy was once based on salt. So if it is not one thing...it's another. Taking away materialistic items is not the solution. People in general need to change their way of thinking.

Daniel Said:

need help on changing from 48v to 12v?

We Answered:

Chances are that suitable 12v motors are not available for the application today. Otherwise the bike maker would have chosen it. However, you never know.

The motor should have its power consumption displayed somewhere. That may be expressed in watts (like micro-wave), and/or current requirement in amperes (amps). Usually the current displayed is the steady state current. Startup current is usually much heavier. That is a start, how much power the motor needs to put out.

The second thing you need to know is the torque the motor generates. This is not necessarily displayed. The motor must overcome the inertial leverage of the large diameter of the wheels. This basically dictates the torque requirement. Of course if you find a replacement whose torque is a little low, it simply will accelerate slower, or you can help it with some pedalling. But you do want enough torque so that on level ground, it can at least keep pushing the bike along. If you can find the manufacturer of the motor, it is a way to track down the specs including the torque. With luck, the company has a website from which you may be able to pin down the motor specs.

Conversion of 12v DC to 48v DC with the likely current load you need for the motor is probably not too practical. The power requirement is likely to be too high for today's components. You will also lose a fair amount of power in the conversion. That is why I am assuming a motor replacement.

Good luck & have fun.

Michele Said:

max sys. oper.volt 600v?

We Answered:

kinda hard to follow................what part of the controller is smoking?

Frederick Said:

People who deny men-induced climate change, would it kill you to know your energy came from a wind...?

We Answered:

no it wouldent but its a change, thats the problem, people dont like change.
the only way to actualy make this happen is to be part of the massive movement to create this change, and leave the old poluting way behind

Dianne Said:

How many more disasters similar to the BP catastrophe before we get the message?

We Answered:

They
Got the message long time ago
No one liked it or the messenger

Tim Said:

How does alternative energy give us energy Independence?

We Answered:

So many people are on board for alternate energy, yet the whole thing just can't get off the ground. I knew someone that had solar powered system to heat their swimming pool. It did not work that great. After a few years they abandoned the system and used a gas heated system instead. Worked much better.