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Old 10-18-2011, 04:17 PM   #1
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Rewiring Question


Hey guys,

I am working on a custom project and I am looking to test it out. To many this will sounds like a stupid thing to do, but I plan on doing it, so any suggestions any ones has will be much appreciated. So am working on a custom pully system in my house, but before I buy the appropriate motor I want to test it using an old wired drill and a dimmer switch to control the speed of the drill. I am needing to require the dimmer switch in place of the drills control switch. I have seen people do this before, but not being an electrician, I am not quite sure how to do it since the drill has additional wiring compared to the dimmer switch. I am also fine burning out this motor, just want it to last long enough to test for a couple days. I am including images of the drill wiring. The dimmer is just a standard dimmer switch. I need to know what I can right off from the Drill control and what needs to be rewired where to the dimmer Switch.

I appreciate any help that can be offered. Not to be rude, but I am not interested in hearing this is a bad idea. Many may think so. I know I can be electrocuted, I know its dangerous, I know I should pay a professional to do it. I am choosing not to do these things. If you are uncomfortable offering guidance, please just say so. Thanks again to everyone in advance.



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Old 10-19-2011, 09:27 AM   #2
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Does the drill have a trigger lock? If so plug the drill into a box with a dimmer and recepticle, pull the trigger and lock it on then use the dimmer to control the drill. If you can't figure out a simple on/off circuit in a drill motor then...well you did ask us not to comment

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Old 10-19-2011, 10:08 AM   #3
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I agree. The simplest solution is to dimmer control a receptacle and then just plug in the drill. Trigger lock or duct tape the trigger switch on.
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Old 10-19-2011, 11:20 AM   #4
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Hey guys. Thanks for the replies. I actually did try that with a rotor speed control I have, but it didn't work. The drill still spins entirely too fast with the control at any particular level. I really am a novice and fully admit it, so if what I am looking to do is possible, I would be very grateful if someone could lay it out for me. Thanks!
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Old 10-19-2011, 07:46 PM   #5
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Then the control won't work any better in the drill.
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Old 10-19-2011, 07:51 PM   #6
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put more dimmer switches in line

That actually probably would work, since its a temp solution and you said you dont care if you burn stuff up
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Old 10-20-2011, 01:11 PM   #7
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Do you guys think the limitation is the drill? Are their wired handhelds that have lower torque levels? Is there a viable way to reduce the speed the drill spins? I am open to other methods of doing this using the drill if the dimmer isn't the right way? I did try a dimmer plug as suggested above and the drill wont power at all? On the rotor it hits a minimum level which is slower than full power, but not slow enough (still pretty darn fast). What does the dimmer due exactly? Reduce voltage passing through? Is that a viable way to slow the drill, reduce voltage or does the drill like have a minimum required voltage to spin at all and that is fairly high and why it wont spin at a slower speed on the rotor control?

Thanks again from a novice
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Old 10-20-2011, 02:53 PM   #8
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Maybe the dimmer was too low wattage.
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Old 10-21-2011, 06:46 AM   #9
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actually, looking at the pictures again, you don't need a variable speed controller. See the little black button on the trigger assembly? That is your answer. That is a built in speed control. Set up a recepticle on a switch, plug the drill in, turn on the switch, Depress the trigger and adjust the speed with the little black button. Set the trigger lock and use the switch to turn the drill on and off
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Old 10-21-2011, 08:39 AM   #10
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Is the drill variable speed if not it wont work
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Old 10-24-2011, 12:52 PM   #11
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Quote:
Originally Posted by joed View Post
Maybe the dimmer was too low wattage.
Dimmer was rated up to 700 watts

Quote:
Originally Posted by danpik View Post
actually, looking at the pictures again, you don't need a variable speed controller. See the little black button on the trigger assembly? That is your answer. That is a built in speed control. Set up a recepticle on a switch, plug the drill in, turn on the switch, Depress the trigger and adjust the speed with the little black button. Set the trigger lock and use the switch to turn the drill on and off
It is a variable drill, but the RPM's are still very high, even at the lowest setting (its an HB drill, so I don't expect much). I am trying to lower the RPM considerable.

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Is the drill variable speed if not it wont work
The drill is variable speed. Would this cause an issue when trying to use a dimmer or rotor speed plugin? I am really trying to lower the overall RPM's much more than what the drill is doing with its own Variable control. Can I replace the variable control built into the drill with the Dimmer switch and have more success?

Thanks again for the replies. Would love to find a way to do this.
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Old 10-24-2011, 02:03 PM   #12
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You can try the dimmer, but thinking about this some more I am not sure you can get the speed real slow and still keep the power you require. To do this properly you will need an Variable frequency drive, sometimes called an AC drive that varies the frequency and not the voltage. I would look into making some sort of gear arrangement to slow the speed down which would also increase the available power on the output shaft
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Old 10-24-2011, 02:57 PM   #13
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Hmm, I thought about the gear idea, though it would take up a lot more room. I wish I could talk to the guy I saw do this, but alas, I can't. Thanks for the idea on the Variable frequency drive, I will have to look into that. I do feel like I checked them out before, but they were not cheap.
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Old 10-24-2011, 03:35 PM   #14
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How many rpms and how much torque are you looking for?
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Old 10-24-2011, 05:33 PM   #15
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Another option might be a right angle drive drill. They are sometimes slower with a lot more torque. Maybe enlighten us to what you are trying to do and some ideas might come out

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