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Discussion Starter #1
I'm sure this has been addressed may times however still seeing posts about drying up source of low speed high torque motors figured I'll put in my 2 cents. Every one knows the many uses and availability of windshield wiper motors main problem they move to fast for many props. Being a General Motors tech I have access to a plethora of motors from wiper motors to HAVC actuators, I just could not get the speed to the correct RPM. Now making my first prop with a 12v converter, 12v wiper motor, and a 12V-40V 10A Pulse Width Modulation Motor Speed Control available on monster guts but purchased off ebay for $8. Note I would recommend buying a PWM that already has an enclosure rather than open circuit board. The modulator allows you to control the speed of just about any 12V DC motor. In fact I have yet to find a 12V motor it wont work on. Just connect a 12V power source either a battery or a 110 to 12V converter, then run your + and - to your prop. After your connections are made and power is on just dial in your desired speed. Hope this helps some people out in time for the big day. Sorry if this is not the best post. . By the way if you use the 12v system then adding LEDs is easy.

Here is a like to my Facebook video

https://www.facebook.com/video.php?v=10152345322353753&set=vb.594283752&type=2&theater

After adding 2nd converter and some LED's

https://www.facebook.com/video.php?v=10152350069513753&set=vb.594283752&type=2&theater
 

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Just be aware... not all PWM controllers are built equally. Some can be quite noisy, resulting in unwanted audible frequencies coming from the motor windings. It sounds like a humming or whining sound and, depending on the controller, can be very quiet or very loud. The frequency the controller runs at makes a big difference, too. The higher the frequency, the less likely you are to hear it. Just my two cents' worth.
 

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Discussion Starter #4 (Edited)
Can you share a link to the PWM you are using?
I got 5 of these off ebay, and the "look" like the same PWM that are on mosterguts.com Like CreepyCreations said beware what you buy. If you want to play it safe they even offer one with a recorder.
http://www.monsterguts.com/store/home.php?cat=3

This is the ebay listing I used, and yes it is cheepy china item however so far so good and completely silent. Either way you'll need to find a safe way to mount it without the board grounding out. Or buy one already enclosed.

http://www.ebay.com/itm/310979396228?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Just found this one too looks the same as the ones I have.
http://http://www.frightprops.com/controllers-electronics/motor-linear-actuator-controllers.html
 

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Thanks for the heads up, just ordered 5. Now I just have to find wiper motors. I was going to order from monster guts today until they wanted 20 bucks to ship 2 of them! Hopefully I'll find another source.
 

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Discussion Starter #6
Thanks for the heads up, just ordered 5. Now I just have to find wiper motors. I was going to order from monster guts today until they wanted 20 bucks to ship 2 of them! Hopefully I'll find another source.
You can try freightprops.com however I'm not sure about there freight, or go to your local salvage yard they should have all kinds of 12V motors laying around. If you are in good with a mechanic I'm sure he/she has some to give away. Remember not limited to wiper motors there are many different types of motors used in todays automobiles.
 
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