The Wind is Free!

A DC motor which for e.g. does 3000rpm at 24V, if turned at 500rpm will make about 4V. Gearboxes (or pulleys) are a bit of a pain to make, and also lose a lot of energy. The gearboxes on large turbines is apparently the most ...

... and oxcygen seperately that gets conbined again by means what he refers to as two mesh siffs that generate electric power that drives an electric motor. After all this the water returns back to the cell for another cycle. Have not seen this for myself but a first for me, will have to take a look ...

... r-tower is a 80mm ID thrust bearing (expensive and hi-tech). Above the thrust bearing is a 80mm electrical swivel and pick up (from an electrical motor - expensive and hi-tech). In fact, all that remains of the original turbine is the two steel plates with their magnets and the stator. I made ...

... 2 blades instead of three, it worked too well the centrifugal force tore of one of the blades and it end stuck in a tree. I'm using a treadmill motor I bought from a friend for 800 bucks, it's rated 8000 rpm and 240vdc I was considering trying to have it rewound but figured boosting voltage ...

... are good to charge a 12V battery. What generator are you using? Your problem is typically of projects which use a car alternator or other high rpm motor as a generator. To make it turn downwind, try reversing the blades, and removing the tail - that alone might do it.

... a coorisponding cam and flywheel on the ground. Or, maybe you install a low RPM high volume hydraulic pump at the top, and then use a hydraulic motor to spin the flywheel on the ground. The flywheel would serve as a speed stabilizer, and would also provide a large circumference surface against ...

DC definitief daar is beskikbaar 24 Volt baie lae R.P.M. ( 64 ) lae amps is wat jy nodig.Lukas

[DC definitely. There are 24V very low R.P.M. (64) low amps ones available. Low amps is what you need]

Thanks for that detailed info!

Advise to the genral group. Using an induction motor is a bad idea. (It can wrok so don't get me wrong) Induction motors require "exiting" this to put it simply means you need to run a constant charge into the coils to generate a magnetic ...

Welcome to the quest! 1. What RPM is required to generate the voltage you require? That is the crucial question - start there. You may find a very high RPM is needed - see posts elsewhere on this site re alternators. 2. I don't. There is a blade calculator on the main page however that can be used t...

... it seems like we have a fair amount of medium to slow wind. First Question if I may: Now for building a generator, how would using an induction motor fair as a wind turbine? Has anybody tried this, it produces 3 phase power and 220v approx 740w per 1 HP. ( that's if I understand things correctly) ...

See my reply to that post...

Hi Windgat, have you perhaps had time to look at my Starwars machine under General? Would you buy it for R1000 and can I rewire the burnt wire section or will I have to redo the whole thing?

THANKS!

Please keep us informed of what you find...

Dankie Windgat, let's day I am somewhat constrained in the diy department. Got hold of 1 or 2 sources in the meantime, but pricey.

Loop mooi.

Hi Whadda. A lack of success going down that path is what led me to make my own coils and magnet plates...

Marcel, you still here? Did you connect with Reinhard Otto? Basically I am looking for a low rpm PM DC motor to charge deep cycle 12V batteries, do have something or can you guide me?

Thanks

harry

Hi, does anybody know where in S.A one can buy a permanent magnet DC motor to charge deep cycle batteries. I have read extensivley on this great forum and saw somebody used a treadmill motor (did find people servicing treadmills and as soon as I explain my ...

... rotor. I came across this site on the internet:(http://www.otherpower.com/otherpower_wind_alternators.html). Perhaps it will help. (see:Induction Motor Conversion Alternators)

Anybody has ideas on how to convert squirrel cage motors to generators???? IMO, not feasible. A "squirel" cage motor has a squirel cage rotor, which are shorted loops of copper bar (wire?) These loops line themselves up to the magnetic ...

Hi Windgat I have this problem. All my squirrel cage motors use the inrush current to magnetize the rotor. If I energize the rotor using caps and rotate the motor about 100rpm above the normal operating speed it starts to generate. Catch is that operating ...

... generator by myself to use it somewhere in my home (may be a geaser). I have gone through the forum, i believe i should start with creating a motor but I don't have clue what needs to be done and where to start... Can i not buy a ready made motor, if yes, from where? I phoned a lot of electronics ...

Hi Leon,

Where did you buy this motor? Im also looking for one!!

... the cost could build up to the same amount as one i could buy and then it still wont be as weather proof as the real thing. Ive tracked down a new motor that fits my requirments perfectly, however, it costs a fortune. I see there was a member Leon who bought a motor, how do i make contact with ...

Hi Garrick, sorry I don't. What you want is a low voltage low rpm motor - i.e. a motor that when turned slowly (say 300rpm) produces the voltage you want (say 12V or 24V). This is unusual as most electric motors are high rpm.