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Motor Solenoide / Solenoid Engine

by Inventnapas Oct 19, 2018
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Hola, imprimí este proyecto para un trabajo de mi escuela, y me ha costado mucho trabajo hacerlo funcionar e identificar el problema. Claro que hice varias modificaciones, por ejemplo al eje le agregue un cuñero y al cigueñal y a la llanta les agregue un cuñero, a su vez cambie el diametro de las piezas cuyas fotos adjunte, debido a que no encontre el balero que necesitaban. ¿Puede ser que por estos cambios el motor no este funcionando?

Thanks for posting this. I plan to build it with my grandson.

A couple of questions about the circuit:

1) Would this work with more power if the switch were used to reverse the voltage polarity as opposed to just open the circuit? I assume a 4 lobe cam would be required.

2) Have you considered putting a diode across the coil to surpress the voltage spike that occurs? It seems the switch contacts would burn out quickly without it due to arcing.

Hi! And thanks for your comment!

1) I think you're right. If you invert the polarity instead of leaving it off I should run doubling the power.

2) I don't know about this improvement. My switch runs whitout problem, but I don't know if its better to make your suggestion. Try it and let me know if you can.


It is common practice to add a diode or snubber network across contacts that are switching current on and off in an inductor.. When the switch opens, the current does not stop flowing instantaneously and creates a high voltage causing arcs across the contacts. The switch may operate for a while but could fail prematurely due to this effect. If you were switching with a transistor it would immediately fail.

ohh! okey now I know what you mean. Im going to add the diode.

I've created the STL file for the 4 lobe cam but don't know how to get it to you. If you want it, I can email it if you would message me with an email address. The file is 65KB in size.

You can post it as a remix.
Also I would appreciate I you post our make in the makes section.

Comments deleted.

Hi thanks for making this i've been looking for one for forever. just one question, what is your power source. i use a rc car battery and it overheats in 5 seconds so i'm looking fore something else. thanks

The problem of the solenoid is that aaaalways overheats. Anyway I use 12V 1A and it keeps at acceptable temperatures.
You can use a fan to cool it a bit, im working on that on the version 2.
If you printed one I'll be very grateful if you post your make. Thank you. Cheers

Also what gague it the wire

Sorry for late response!
Any normal copper wire will work well.

ill send you a pic after i get the part that i ordered

Very nice , to bad you didn’t include English in your info .

You're right. I just tried to translate all the instructions and pieces needed. In the next days I will try to add subtitles in the youtube video, but I also think its very illustrative.

Ya necesita Ud. el Arduino, o solo el switch y una pila?

Solo se necesita el switch y un transformador/bateria de 12V.

Where is the assembly link? I just see it say "In this link."

im sorry, I forgot it.
I just put it, ENJOY!

Gracias! and no worries. This is an awesome design that I wanted to build with some of my students. Thank you thank you thank you!

Printing it. should be fun. did not see file for the o-ring pulley, I guess the little tab unit goes in its place. Got a spool of bell wire I almost threw away. now I have a useless use for it! maybe i'll use this to power the crank air raid siren project on thingiverse !!

i don't upload the pulley because its still a work in progress, maybe in the future.... But if you need it I can send it to you.
I would love to see that! let me know your work please!!