Electric Motor Secrets

[hh1341]

Jetijs,

Your bench always gets top marks for the work that is done on it!

This is beautiful craftsmanship.

I think this is the ONE!

Carl

[Jetijs]

Hi StevanC,
so far I am waiting for optoswitches to arrive, they should be here next week.
What do you mean with benchmarks?

[StevanC]

what's the current progress regarding this build :-)
What are the benchmarks?

[Jetijs]

Carl


Today I almost finished the timing:




There are two pieces of acrylic in that deepening of the polycarbonate plate. They are made so that they can slide all around the perimeter. And as soon as the perfect timing is found, you just tighten those nuts on the aluminum plates to hold the acrylic pieces in place. The optoswitches will be glued on those acrylic pieces. Unfortunately today I realized that I have only three optoswitches and the electronic store does not have them in stock, so the will have to order them and this can take time.
Thanks,
Jetijs

[hh1341]

Very nice, Jetijs.

Carl

[Jetijs]

Thanks guys

Another update.
I finished the timing discs with adjustable ON time 10-70 degree of an ark.
Those long bolts are only temporary.

[darkwizard]

What a motor!!! It is marvelous, incredible work.

[cody]

Wow Jetijs, what a motor!!! Im currently modifying my latest adams motor to a lindemann attraction type motor. All i have to do is make a special rotor and rewire my coils and it should work. If all goes well, i will be able to easily adjust the gap between my rotor and stator to get the closest coupling possible.

[Jetijs]

Thank you Peter
Your support means a lot to me!

Archer, you can use any timing device you want for this motor - reedswitches, optoswitches, hall switches or even carbon brush commutators/ It is up to you, what ever is easier for you to make

[Peter Lindemann]

Awesome Work

Jetijs,

Absolutely beautiful work. What an inspiration!

Peter

[Archer Newlun]

Jetijs,
That is for the laminations cut to the specs that you specify.
They price it on a per pound and/or per laminate basis.

[Archer Newlun]

Timing Advance

How do I control the timing advance on this motor?

[Jetijs]

Is that for the whole core set or just for the cout out laminations?

[Archer Newlun]

Got an estimate from Protolam...
Total estimated cost = 500 USD
Material: M19 silicon steel laminate
Material thickness: .35mm
Total laminates for rotor/ stator: 108 (1.5 inches)
cost is about 3.00/laminate for rotor, 2.00/laminate for stator.
Not as cheap as I anticipated , but the results are still only preliminary. When I have the final draft of my motor, then I will have a better estimate.

[Jetijs]

Another update.
gluing coils on the stator poles was a little messy. I did not use the hot glue, because it cures too fast and does not hold the coils in place very good. Instead I used some drops of epoxy resin between the coils and stator poles. It was very hard to align the stator and rotor so that there was an equal air gap all around the stator. At these small air gap widths, if the stator is even a tinny littlr bit offcenter and still does not touch the stator, it will lock up if fired, because there is not equal attractin force from both sides. Also you can not fire only one coil leaving the opposite coil alone, because this will just lock the rotor still. Anyway, that part is done and I am glad, that this part is over
A few pictures:







Thanks,
Jetijs