OverUnity prize money 15825 US$ total until now

[FatBird]

@ Joe Tomicki,   just build this 500wat scooter moter 24v driveing a car genrator charging 10 12v golf cart batt. and a 5000wat inverter to power what you want . and charge the 24v batt. pack off the 10 batt.

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Please tell us more about it Joe.

Can you post a picture of the setup?

Thank you.

.

[DreamThinkBuild]

@Joe Tomicki,

Neat Idea.

During the day you could run these types of motor direct off solar then switch to battery for night time/stormy weather operation. Just for reference would you go with a chain or belt driven motor?
http://www.electricscooterparts.com/motors.html

What type of car alternator would you use that has minimal cogging?

Thanks

[e2matrix]

Hi,
I would test it
1. in comparison with the same LED being driven by DC voltage,
so optically comparing the brightness level, which is pretty exact with
the human eye.

2. by using a calibrated resistor, which will heat up calorimetrically
some destilled water and see, how much heat energy this will
put out over time.
This is also a very precise measurement and can be used to see, how much
temperature difference the water will have afther the test and this way
you can calculate the energy spent to heat the water and thus the output
energy of the JT circuit.

P.S: Gadget should do these tests already by himself before applying for
the OU prize.

Regards, Stefan.

Being heavily into LED's and brightness of them I would not trust the human eye for comparison.  If an LED puts out 50 Lumens and another puts out 100 Lumens which is double the brightness it is commonly thought most people will not notice the difference.  If they are side by side comparisons at the same time you may notice a little difference but without a Lumen meter it's really difficult to tell smaller differences.  A decent Lumen meter can be had for around $30 from various Internet sources.  Knowing the LED type, it's Vf and current draw can also tell you how much power its drawing and alternately if you know the Lumen output at 1 meter you can guess fairly close how much wattage it is using. 
BTW is gadgetmall claiming 2500 Amps or milliamps?  I'm assuming he means milliamps - some one save me from getting too excited 

First post here but been following alt energy stuff for about 20 years.  Cheers to gadgetmall and others going for this.  It's bound to happen some time and I'm guessing it's not far off. 

[mscoffman]

@Joe Tomicki,

Neat Idea.

What type of car alternator would you use that has minimal cogging?

Thanks

Good reference for motorscooter motors, Thank you. 12Vdc Car Alternaters
are generally 400watts or 800watts for heavyduty. There are truck
alternators with even higher ratings. Alternators are actually 3phase AC
generators with a diode set setup to produce 12Vdc. Remember car/truck
alternators require a 12Vdc Regulator either independent, or built-in to keep
batteries charged. Regulators set the field coil current levels to the
alternator based on battery voltage and external demand levels.

Obviously a 400watt max alternator should not cog a 500W motor
to a standstill. The Alternator will then brake the motor only enough
to charge the 12V batteries back up. Lift truck, golfcart, and trolling
boat motor batteries are called "deep cycle discharge" batteries, do
not use normal car batteries as they are not deep cycle discharge.

It would be interesting to know the optimum gearing or belt pulley ratio
(diameter) he used to link the two units to maximize efficiency.

:S:MarkSCoffman

[mscoffman]

12Vdc Car Alternators
are generally 400watts or 800watts for heavyduty.

A pictorial reference for a car alternator;

http://www.free-energy-info.co.uk/Chapter2.pdf
...pages 57 through 81

The alternator used in above reference has a built in battery
regulator. With apologies for the off topic posts.

:S:MarkSCoffman