A Tecumseh Tale

[wallfish 17,017]

18 minutes ago, Gregor said:

The second attempt, while better than the first, still needs improvement. I think I may need smaller wire, but will try again. It will not fit on the laminate unit.

Look'n good !!!!! and I'm sure something like that would take a few attempts to get it right.

[Tractorhead 9,064]

Cool !  

Looking good Congrats - Great result for your second selfmade charger Coil.👍

 

yap, that needs a little bit training the first time to be fair

and this wire with 0.83 on this diameter to wind it is like pulling a stubborn donkey with a rope 😂😂😂

 

But hey, you made you own charging Coil.

i would suggest, keep the cardboard inside, to stiffen the coil bit more especial on mountig it.

a cardboard results in a safer way so the coil can‘t be scratched rapidley by stator metal.

 

if it‘s too small, double the Cardboard inside before winding to get more space between your later stator mountpoint and your coil.

you can remove later the second cardboard inlay to enlarge the diameter.

 

but you see, it isn’t impossible.

i would be interested what you coil results in Voltage AC.

 

[Gregor 4,846]

@Tractorhead  Did you say these are small diodes in the line?

[Tractorhead 9,064]

No, normally they aside the Engine on the Diode plate ( rectifierplate), 

but it can happen, the they built also diodes in line on the Coil instead of the rectifier plate.

 

 

 

Yes it appears to be.

 

open up the shrinktube to see it better.

 

mompls, i will look for a good pict.

[Gregor 4,846]

I have diodes in my rectifier card. Maybe those are simply splices.

[Tractorhead 9,064]

Aaah, here it is...

 

 

This thing left side under the Fuse is one of the diodes.

the right diode was missing, that also was one of my reasons to decide for using a external Regulator.

The terminal with the white Wire is normally the Charging Line after the Fuse.

 

The Coils goes normally each hot wire to each of the both lower outside terminals, the lower middle Terminal is the Magneto Shutdown.

.

[Tractorhead 9,064]

2 minutes ago, Gregor said:

I have diodes in my rectifier card. Maybe those are simply splices.

 

You are few seconds faster.. 👍

[Gregor 4,846]

My third attempt was a disaster. Tried something new, didn't work. The coils are much too big to fit in the space provided. Maybe I need smaller wire.

[Tractorhead 9,064]

8 hours ago, Gregor said:

My third attempt was a disaster. Tried something new, didn't work. The coils are much too big to fit in the space provided. Maybe I need smaller wire.

 

 

Sorry for my Laugh Bud, 

but It’s the normal Way everybody have to go.

 

Yap, thinner Wire makes definitely something easier, but you also have to take your time while winding.

Don‘t bring yourself in a hurry.

 

Winding yourself coils is a typical thing for ugly Winterday‘s when there is just Slush outside,

the temps are in a Ugly range , you heat up the stove put you most liked beverage aside and start to turn.

one Winding after the other, each complete layer is a reason to celebrate with your beverage.

 

so i could be a productive day, or just a funny one, that depending on your choosen beverages 😎😂

 

 

i would give a try the second coil you made, this one looks good if it fit‘s to the stator

Btw, the both Stator spaces for the Coils are little different.

 

 

 

 

 

[Gregor 4,846]

I decided it was time to remove the old coils and dissect them. They were not working anyway, so what the he..., I couldn't hurt anything. One thing I don't under stand is, how can one continuous wire, wrapped in a circle, have 4 ends. That bugs me. Oh well. I will try to install my newly wrapped coils, having only 2 ends per coil, and see what happens.  Worst case scenario, it won't work again.

 

EDIT:  My coils are too thick. Back to winding.

Edited January 18, 2021 by Gregor

[Tractorhead 9,064]

Just if a coil is cutted and they looks a 4 ends.

it can also be, they use a double winding, but i doubt.

 

Yap, give them a Try and see with AC Setting what is result on one coil.

if you set two coils, put them in row.

 

the right order is coil1 begin as lead, coil1 end to coil 2 begin and coil2 end as lead 2 

or if you just use one coil, both ends are leads to measure the Voltage in AC between.

[Gregor 4,846]

5 hours ago, Tractorhead said:

 

the right order is coil1 begin as lead, coil1 end to coil 2 begin and coil2 end as lead 2 

or if you just use one coil, both ends are leads to measure the Voltage in AC between.

I understand all this but, it doesn't leave these wires

 

Which were connected hereon the little screw on the magneto. Maybe I don't need them, I don't know.

[Gregor 4,846]

Well, I don't have any ac volts.   Not sure what I could have done different, but tomorrow is another day, and I have lots more wire.

[Tractorhead 9,064]

On both coils absolutely zero? 

Canot believe, except you use unisolated copper wire.

Everything other must give you any kind of a voltage.

 

measure each coil standallone. 

Flywheel must be on and engine must be running, 

than you must definitively measure any whatever Voltage between two leads of one coil.

 

ah,

you have to scrap the insulation off of the end of the leads.

get a half scissors or any not too sharp knive and scrap the Insulation of for about 1 cm.

Than you will measure definitively any Voltage on the Leads.

maybe that is the reason !

[Gregor 4,846]

I have about 1.5 v AC

[Tractorhead 9,064]

7 hours ago, Gregor said:

I have about 1.5 v AC

I wonder a little, 

if you used enamelled copper wire that must be at least something about 10 or maybe more Volts.

Your result seems to me that your Voltmeter don’t show right Value.

With a winding over 78 you should reach even in non perfect winding order about 12,5V - 13,8V at Full throttle.

Are you shure with the decimalpoint is right? 15V at something over 90 Windings can be possible.

 

try a H1 Bulb,  if it will lit, but take care, they can be hot if they lights longer.

 

you told about a Winding tool, does that maybe scratches the enamel from the copperwire?

 

[Gregor 4,846]

The tool is made of wood, and covered with cardboard. I wound some new coils this morning, the hair dryer is currently drying the Gorilla glue. I have a new plan. I'll let you know the results

[Gregor 4,846]

On my new coils I left the wires very long. I put shrink tubing on each, then put all 4 in shrink tubing after marking them. I ran all 4 wires to the regulator board. All splices and connections could be made there. I estimate ~70 wraps per coil. Ohms reading form coil to ground, 0  Resistance through the 2 coils, .3 to .6  It tends to jump around. Fired up the tractor. AC volts, 1.8  DC volts 0  We are back to Edison again. Only an idiot does the same thing over and over again, expecting different results. I really don't know what I could have done differently.

[Tractorhead 9,064]

1 minute ago, Gregor said:

On my new coils I left the wires very long. I put shrink tubing on each, then put all 4 in shrink tubing after marking them. I ran all 4 wires to the regulator board. All splices and connections could be made there. I estimate ~70 wraps per coil. Ohms reading form coil to ground, 0  Resistance through the 2 coils, .3 to .6  It tends to jump around. Fired up the tractor. AC volts, 1.8  DC volts 0  We are back to Edison again. Only an idiot does the same thing over and over again, expecting different results. I really don't know what I could have done differently.

 

How far your Voltmeter in AC can read?

can it measure 110 Volts? 

Or do you have any other Source to check your AC Input of your meter. ( i.eg a Transformer with AC Output)

what i have seen, on your picts, your Coils must work.

DC you cannot read any value, because it is not rectified.

 

Try a Bulb - any 12 V Bulb from 10w up to 55Watts shall be lit bright if it‘s connected to a Coil.

if so, that sounds for me that something is wrong with your meter.

 

Did you put the Coils together to measure?

if so separate them, check each coil separately for itself.

 

[Gregor 4,846]

How far your Voltmeter in AC can read?

can it measure 110 Volts? 

My volt meter is a Fluke 323. It can read up to 600V AC.

 

DC you cannot read any value, because it is not rectified.

I have the diodes in my rectifier board

 

Did you put the Coils together to measure?

if so separate them, check each coil separately for itself.

I separated the coils and measured each by itself.

Coil 1, 9-10 volts AC  DC 0

Coil 2 ,9-10 volts AC  DC 0

Put them together, about 1.8 volts AC   DC

Tried a 12V dc bulb. Did nothing

I think I'll have a beer.

 

Edited January 19, 2021 by Gregor

[Tractorhead 9,064]

13 minutes ago, Gregor said:

How far your Voltmeter in AC can read?

can it measure 110 Volts? 

My volt meter is a Fluke 323. It can read up to 600V AC.

 

DC you cannot read any value, because it is not rectified.

I have the diodes in my rectifier board

 

Did you put the Coils together to measure?

if so separate them, check each coil separately for itself.

I separated the coils and measured each by itself.

Coil 1, 9-10 volts AC  DC 0

Coil 2 ,9-10 volts AC  DC 0

Put them together, about 1.8 volts AC   DC

Tried a 12V dc bulb. Did nothing

I think I'll have a beer.

 

 

Yap, and after that put them in Row

bulb tested also on each single coil?

👍 cheers

Edited January 19, 2021 by Tractorhead

[Gregor 4,846]

I decided to do a little switching around. I connected the beginning wire of coil #1 to rectifier board. End wire of coil #1 to end wire of coil #2. Beginning wire of coil #2 to rectifier board. I have 20 Volts AC at half throttle. Still no DC volts. It won't light a bulb. I have 4 new diodes. None of them made a difference. Testing the diodes with my Fluke digital meter, they show open both ways. All of them. Checking them with my analog meter, they show open one way, and continuity the other way. Well, I'm getting closer.

 

I just thought of something. Would a battery have to be in the DC circuit to show any voltage through the diodes?

Edited January 19, 2021 by Gregor

[Tractorhead 9,064]

Put one of the end leads to ground and the other to your Rectifier.

that should Work normally.

 

You tried the bulb directly on AC ( on the leady directly)?

 

 

Edited January 19, 2021 by Tractorhead

[Gregor 4,846]

No DC volts that way. I will check it with my analog meter.

 

Analog meter also show 20+ volts AC. 0 on DC

Edited January 19, 2021 by Gregor

[Tractorhead 9,064]

Get a bulb 10W and try it separate on each coil

the 10V on each Coil must be enough to lit maybe not too bright.