Magnetizer project completed

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Model T Ford Forum: Forum 2012: Magnetizer project completed
Top of pagePrevious messageNext messageBottom of page Link to this message  By Randy Clemens on Sunday, October 28, 2012 - 12:58 am:

Just finished a Magnetizer project. I had two bad T axle shafts that I cut down (Kept the drive section for later use). This was a lot of fun to build. Each shaft has twenty layers of wire and there is 100 wires across from spool end to spool end. I used enameled wire that is also covered with a woven cotton covering. The spools are run through a bridge rectifier and two capacitors to clean up the power. It works great. My next project is to build a extruder to make my own magneto coil flat wire and build my own mag coils.

Cutting Shaft

Winding 1 Winding 2

One spool two spools

Top wood top blocks

bottom block Top side

doneHopefully someone finds this useful.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bede Cordes, New Zealand on Sunday, October 28, 2012 - 04:32 am:

Randy,

have you measured how many amps your charger draws ie: to work out how many ampere-turns you are running at ?

A very nice looking unit. Well done.

Regards
Bede


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Todd on Sunday, October 28, 2012 - 11:43 am:

FWIW, According to the book "Automotive Electricity" by Consoliver, 12,000 ampere turns are required for recharging ordinary magnets and 5,000 ampere turns for Ford Magnets.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Paul Allen Vitko on Sunday, October 28, 2012 - 01:55 pm:

Nice looking rig Randy. I think the 5000 ampre turns might be a little short Ken. I tried 8 turns each leg with a battery I think was getting 300 amps.

With the magnet ends ground flat lifting from the ends about 12 pounds was lifted.

The turns were increased to 16 each leg with the same battery and the lift went to about 15 pounds.

Last a steel flux bar was put across the ends while chargeing a few magnets would lift 16 1/2 pounds.

I have one more thing to try before the test stand is torn down.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Randy Clemens on Sunday, October 28, 2012 - 04:14 pm:

Maybe someone can tell me if I am doing this right?

Each coil ohms out at 6.1 ohms

6.1 x 2 coils = 12.2 ohms

I have 114 volts going to the coils from the rectifier 114 x 12.2ohms = 9.34 amps (although when I put a clamp meter on it I get 12 amps)

I have 20 layers of wire on each shaft with 98-100 wires across on each layer. If I use the lesser, this equals 1960 turns of wire.

9.34 amps x 1960 turns = 18,306 ampere turns?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bede Cordes, New Zealand on Sunday, October 28, 2012 - 05:21 pm:

Randy, i think you are right, except you divided rather than multiplied to get your current (is x in your post). I reckon you are bang on. Lots of ampere turns, due to your fine wire and relatively high voltage being applied. Good stuff ! Regards, Bede.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bud Holzschuh - Panama City, FL on Sunday, October 28, 2012 - 07:53 pm:

Randy

Nice work..and it's pretty!

schuh


Top of pagePrevious messageNext messageBottom of page Link to this message  By Randy Clemens on Sunday, October 28, 2012 - 10:10 pm:

Thanks Everyone.

I look forward to using it and finding how much weight the magnets will hold.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Paul Allen Vitko on Sunday, October 28, 2012 - 11:14 pm:

Be sure to pull your magnet from a fixed plate with weight for checking.

The weight will read much higher then if you try to dead lift weight.

Don't forget to include the weight of the magnet you are also lifting in the total.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Paul Allen Vitko on Sunday, October 28, 2012 - 11:42 pm:

I forgot to mention grind the ends of the magnet you test flat.

The angle of stock T magnets will set on the edge of the magnet and will show a lower weight then it will lift ground flat.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Monday, October 29, 2012 - 12:55 am:

Nice job on the charger.
Lets see, a charged magnet that will pickup and hold a 2 pound weight and setup with a gap of .025 to .035 between the magnets and coil ring should put out 35 vac at around 35-40 mph. What is the point of being able pickup more weight, bragging rights or real net gain?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ron Patterson-Nicholasville, Kentucky on Monday, October 29, 2012 - 10:51 am:

Randy
Nice job on the magnet recharger. Why don't you make up a set of plans for others to follow?
Yours is very similar to a purpose built Model T era magnet recharger I have.
1
In my view trying to find out how much a Model T magneto magnet can lift is a fools errand.
Any recharger with the capability to provide a saturation charge to magnets will create a working magneto when properly installed as Mark G. describes. Furthermore, that magneto will have a capacity of producing 200 Watts of power and the Model T coil ignition system requires only a fraction of that to work properly.
Many folks think; when it comes to electricity more is always better. Not so.
Ron the Coilman


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Todd on Monday, October 29, 2012 - 11:41 am:

Randy, is your clamp meter for DC?
BTW, ball-park figure on the cost of the wire?

Also, methinks Paul's method is just as effective and a heck of a lot cheaper and quicker to build.
Didn't I hear the term "value engineering" around here somewhere recently?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Adam Doleshal on Monday, October 29, 2012 - 12:19 pm:

Even with that gigantic charger, you still will not be able to get a magnet to hold a charge on a long term basis if you charge it in the opposite direction than it was originally charged...


Top of pagePrevious messageNext messageBottom of page Link to this message  By Paul Allen Vitko on Monday, October 29, 2012 - 01:02 pm:

Easy to check Adam, build your charger with your wire wound any way you like bend a welding wire to magnet shape and charge it.

Remove the wire and check the pole direction then mark your charger for pole direction.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Terry Horlick in Penn Valley, CA on Monday, October 29, 2012 - 10:06 pm:

In the Gingery book he specifies a soft iron core. I'm not sure, but I think that the vanadium steel axle might not work as well as a hunk of rebar or other soft iron.

TH


Top of pagePrevious messageNext messageBottom of page Link to this message  By Randy Clemens - NW Phoenix AZ on Monday, October 29, 2012 - 11:00 pm:

Thanks Ron,

Cant beat the original charger.

I just might put together some plans as this one was very easy to build. I got more out this than a usable tool. I learned a lot building it and had a lot fun doing it.

I agree, more doesn't always mean better. This was an experiment that turned out well. I'm getting about 5 lbs of end pull without grinding the ends of the magnet.

Luckily the wire was given to me so the total cost of this project was extremely low. Other than wire it includes a small amount of wood, two bars of steel, rectifier, capacitor and a switch.

Randy


Top of pagePrevious messageNext messageBottom of page Link to this message  By John P. Steele, Montana on Tuesday, October 30, 2012 - 01:29 am:

What size capacitors and rectifier? Does the gauge of the wire make any difference? Plastic coated VS. woven cloth? Enamel coating??? As you may have guessed I'm not an electrical engineer. I've smoked more than one meter and all my cutting dike are notched.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Paul Allen Vitko on Tuesday, October 30, 2012 - 12:25 pm:

Its not the amount of weight lifted its the range you can lift checking your charger.

Toon's six volt charger with the right lift method lifts twelve pounds or more, it puts out good power.

There is no doubt in my mind Ron's charger will lift as much or more then my lifts BUT its not as easy as you might think.

I was shocked after learning the proper method on the weight you can lift but it has to be done the right way.


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