Gotta get Movin'!

[ghurd]

The explanation is good. Photo too.

My wire was 0.025 (bought a new caliper).

Didn't switch guts yet. Still irate over the last assembly process.

Keep 'em tight. Mine got 'fluffy' or I could have got over 120 in there I think.  Still don't think it would have fit in the ends.

See what I mean about dead coils?  1a and 1b, and 2a and 2b can all be dead at once, over the same magnet.  Half of 3a and 3b will be over no magnet.

I think the situation could be improved by cutting the mags in half and switching them around, N-S-N-S. Then wind them different.  Haven't thought it through at all.

Hunker down. The snow is on its way!

I'm in Girard (just North of Youngstown).  I work solar in Geauga and South Ashtabula mostly. Straw hats and blue pants.  You probably have seen my work on a white horse barn somewhere!  Or my LED buggy lights.

G-

[Norm]

   Yeah...I just barely have an idea ...made a 2 pole motor in high-school once cork, 2 brads on the end for contact wire touching the pins...the concept of having more than 2 commutator bars and the commutator bars being kinda tapped into a coil still almost overwhelms me...right now if I can just double or triple the voltage by rewinding it in the original pattern using more and smaller guage wire....will suit me just fine.

    Girard huh? Rt7 ...Rt11...We go to Warren a lot in the summer...Walmarts, Author Treacher's fish.

    Conneaut...'Ohio's sharpest corner Rt7 & Rt20...stones throw from a big blue water tower and out the kitchen window and wayyy high up there the blinking red light of a communication tower recently erected. ( Wow! sure be a nice place for a 'mill' Huh?)

              Have Fun!

             ( :>) Norm.  

[ghurd]

Strange. People all over the world here, and we are only 65 mile away.

I wish I could get the stock configuration windings in for 12v at 400rpm.

Had another one apart today. Surplus 24v Globe motor with encoder. The thing had 11 slots. 11? I don't get it.  Top had coil pairs in 2 slots next to each other, 1 slot between them at the bottom. The slots are skewed. Otherwise, it looks about the same. 5v at a very questionable 500rpm, 7.5 at 1300rpm.

I found a 230vdc 5100rpm 2.25hp 14lb shipping weight treadmill motor for $10.

I think a few of those are next!  I love wasting money ruining things instead of just getting something that works. :~)

G-

[ghurd]

I do have about 10lbs of something that must be 35ga. Maybe less. No problem ripping it in 2 by hand. Breaks like string.  Miked it once, can't remember.

Would not be a problem getting 500 turns in there.

Hummm.... 12v and 35ma at 20rpms?

G-

[Norm]

   Yeah, I ran across some wire...about 2 lbs. .015 I've got one blower motor armature that is a little smaller in width I'll run it out on two reels count it out with my coil winder counter and check the insulation. I run a feeler wire along the wire makes contact with the wire as I'm reeling it if there is any bare spots about 5volts from some AA batteries completes the circuit to a little speaker...it lets you know real quick if there is any bare spots.

    BTW did you ever use a calculator to count turns?

http://www.fortunecity.com/marina/titanic/664/id6.htm

   I always thought those little calculators were pretty neat for that they even have dual powered one now still $1 always thought that was pretty amazing considering what they used to cost about 30 years ago...

   Well didn't have time to do much on the projects....too busy shoveling snow and keeping warm.....catch ya later!

                   ( :>) Norm.

[ghurd]

  I do remember the post about the counter.

  The insulation checker is new to me. I'm pretty sure I stretched some wire from the last microwave. It drove me crazy thinking about bad wire when I was winding the last armature.

The 0.015 is about 27ga. It will handle about 1.7a. About 70ohms/1000' guessing. Sounds great for this to me.

Put my new armature (2 series coils at 83 turns each) in with the stock magnets. It worked! 5.4v at 650rpm. Beats the tar out of 3.9v at 650rpm. That means my original math (a long time ago) was about right. I should have 23.4v at 650rpms with 3 coils at 120 turns each at 650rpm. Or 3 coils of 240 at 325rpms. I think.

Victory comes in small steps I guess.  I feel like I beat that little motor!

Even if it won't do 12v yet.

G-

[Norm]

  Nice goin G- , I can't report much progress, it's cold out in the shed have to come in every 15 minutes to warm up my feet mop up the kitchen floor...etc. shovel snow.

  You're way ahead of me,still wondering how that one would work as (bob g)depicted, if he would go into more detail about it, I guess all the start ends of the coils go to the commutator bars and the other ends go to ground or you have a special slip ring.

  Well as soon as I get re-arranged here get all of the spare parts out of the kitchen corner so I can work on the armature rewinding.

   If a couple more could get interested in this rewinding bit...I know there are a whole bunch out there that use these as motors.

                  Have Fun...keep warm!

                 ( :>) Norm.

[ghurd]

I can't get bob g's idea through my head.

No matter how I figure it, there would be cancellation, and dead coils to short out the active coils.

I wonder if he didn't mean something like I did.  But I just ran the coil ends to 3 joined contacts on each side.

Ordered a couple new motors to ruin. 260v treadmills and a 475rpm 0.150a(no load)12v pm.

Also have a little brushed PM Globe motor. The 2 curved mags look about the right OD to drop into a little induction conversion I have going.  The motors are naturlly 40 mile apart right now.  Looks like it fits when I think about it at least.

G-

[Norm]

  I can't figure what he means either...but I've

studied how this was wound originally with 2

wires

  On my botched up website....later on in this escapade....

     I'm going to use 2 colored strings....I'll

hook them each onto opposing commutator bars and

I wind a few turns on each side then the next

pair and winding another few turns then go thru

the whole pattern but from thereon only

a couple of turns and they aren't hooked up to

the commutator bars again until each coils end !

and each end will be hooked up to the commutator

bar that it's mate started out when the winding

was started.

   Winding it with the colored string and winding

and connecting only 2 bars on each side will

illustrate when the brushes are contacting 2

bars (on each side) simultaneously and it will

 be seen that all the coils are hooked up...

   The path is thru all of the windings at any

time the commutator bars just tap into this

coil/s there are really only two positions...when

the brushes are in contact with two bars...and

when they are dead center one bar on each side.

   I'm relating this as I would be talking to a

beginner...a peer in this experience...so no one

should take offense...in fact if I'm wrong..someone quickly correct me...it's all about sharing and learning...right?

    When I unwound my first armature I found

where the one and only end of the single winding

(or so I thought)had ended, then half way thru I

thought I had broke the wire, so I finished

unwinding the armature and rewound it with more and smaller wire still under the misapprehension that it was a single winding ...despite the comedy of many errors and sloppy, hasty workmanship it improved the voltage at 700 rpm

....almost double.

    My second unwinding I checked more closely

and discovered the tail end of the wire wrapped

around the bar connection along with another strand of wire coming from another coil. I then

find another similar setup on the opposing bar,

alternating unwinding the 2 seperate windings

...I finally discovered that it had started out

as two seperate windings...the wire end of each

was tucked into the nearest slot then wrapped

around the bar connector....big revelation (to a newby)!

           Well this is where my learning

curve is at this point in time!

            Later....

                 ( :>) Norm.

[ghurd]

I figured with my rewind I would have good power for about 100 degrees, twice per revolution.  So each end went to 3 bars instead of 1.  With 10 bars, 3 joined to 1 wire, then 2 no connection, then 3 joined to the other wire, then 2 no connection.

Figured it would help if there was something 'off' about the magnets, too.  More chance to get the volts if it was connected longer.

No progress here.

G-

[Norm]

   On my website (PedalPower):    

 I'll be starting my rewinding armatures to generate higher voltage at lower rpms for beginners like me!    http://www2.suite224.net/~peppysue/Projects.html

   ....but you won't see too much there for a couple of days...

                Later.......

            ( :>) Norm.

[ghurd]

I'll be learning something!  G-

[ghurd]

Got the new motors!

You might like the little one.  Or the big one.

http://www.fieldlines.com/story/2005/1/25/144635/825

G-

[ghurd]

Hey Norm.  My mini conversion (that was cogging bad) works!

G-

PS- I had to tell someone!

[Norm]

  OK Glenn...I'm past my alloted time...

congratulations! Almost thru with my latest project on attaching a reed switch to the $.88

counter I'll be putting it on my website late tomorrow....then back to making 2 equal reels of that .015 wire so I can rewind that blower armature....

               catch ya' later!

           ( :>)  Norm.