School project on steroids

[Thaelin]

    I just made a small pulse motor and had great  results from it. Considering the "junk" parts I used to make it.
I was wondering if others have built these types and what kind of rpm was sustained from them. I would like to
make one that could turn around 2100 rpm contsant. If one use a cylinder with 4 magnets on each end at 90
degrees and each set 45 degrees from the other end, would this produce enough torque to spin that high? I am
in the process of trying to make a small scooter to run around on that would do the self charging process.

   I was astounded at the small amount of current used by the prototype.  That times 6 would be my real world
draw. Now the big wonder. Each coil having a basic flyback catcher, would there be enough to charge up anotherf
battery while you use the main source.

   These are just ideas at the point but will be starting to build the motor next week and could enjoy some input
from the group. This kind of thing is all new to me but what the heck. I just love to tinker with things. Guess if nothing
else, I can make a generator out of it.

sugra

[joe]

Hi Sugra,

As i said on the "pulse motor topic" i have been worked with the Bedini Sg generator for more than one year. I have started with 2.5" wheel and 6 volt batteries. I have "ruined" many transistor and resistor. The worst one was when my cat took the wheel for a toy while it was running and immaging what happen then. He took the rig apart  because i think he could play with it (Hi,hi,hi!). Anyway," i guess it was a king of a message" cause i had to build an other one but this time i build it so the coil was able to receive a 12v 1.5 amp batterie. That coil has about 850 turns of #23 and #26. So since last october i have been worked on it to make it bigger, so i have bought a 20" bicycle wheel and added 16 rectangular magnet to it. Magnets are 2# long by 3/8 think and 7/8" wide. It worked fine and i was able to recharge the secondary a 12 volts batterie.

Now that i have experimented with all this i would like to move ahead and make it bigger ( add more coils ) but i don't have to much skill in how to connect transistors on each coil so they can work on the either help returning power to the main battery or just powering secondary batterie(s).

So that was my question on my previous post and also as i ask you about the "Reed switch".

So if you have some answers to my "little problems" than i would apprecieted.

Joe

[Thaelin]

   800 winds of #26, wll that tells me about the size as I have a spool of 9000 ft of it.  Made a coil
of 400 and returned about 8 ohms but that was with an old metric socket in the center and not much
pull.

   As to adding more coils, each at that amp draw should use its own transistor otherwise they will
run very hot (waste). Sink them real good. I have been adding them on as complete seperate circuits
with common batteries. Just make sure to use a full wave bridge on the charge side to stop any feed
back into the operating coil circuit.
   You could use a coil set opposed from each other but then your transistor would catch the hit in current
draw. I have simply chose one transistor per coil and that way control heat problems.
   For the charger to work, it will have to be associated with each coil to capture the EMF pulse. That makes
two coils on a common core and at 800 winding each, bit big I'd say.

[Thaelin]

   Well, finished up my second data run on my steriod version and the results are basicly the same.
I start out with a dead (3v) 12v battery and in 4 hours it is charged up to a decent level and holding.
Would have to say that it is working very well. I found a nice way to check if your charging circuit is
doing the job very well. I put a 12v stop lamp across the full wave bridge and it lites up fairly well. The
trick is to get it to heat just a bit and that will tell it can charge a battery nicely.

There is one thing I would like to ask about and that is, I am playing with the windings and size of coils
so I have added more coils than are hooked in a way as to interact with the wheel. Even tho they are
not actually 'working' the wheel they do add to the charge factor as well. Does that mean you could
have one coil powering the wheel and the rest redundant and just chargers? That would make for a
easy way to make a charger system to work in a house situation with only one small wheel.

As this one is for an electric bycycle, I will have to run the coils to the wheel to produce torque but
need also for the charger to function as well. Time will tell. Bought an "Orange County Chopper" style
bike to mount it on so here we go.

Sugra

[magnusx]

Hey Sugra, good to hear about your project - it's pretty much what I want to build too assuming that this is a Bedini type SG machine.
Do you intend to run your bike off the wheel drive itself or use a separate motor to turn the wheel? I'm asking because I already have a 26in hub motor and I'm wondering whether it would be needed. I haven't yet built any test rig but expect to do so once I have the new Bedini book (only available from his website) I figure it might help with the details . . . .
Thanks again and don't forget any info on construction is greatly appreciated.