docirv Posted February 18, 2007 Report Share Posted February 18, 2007 I got the presto pot ready to go but now I need a stirrer. I tried my table top drill press at the lowest speed but it is still too fast. Any suggestions would be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
bubbah rubbah Posted February 19, 2007 Report Share Posted February 19, 2007 check out the rottiserie motors that are sold for BBQ grills- Quote Link to comment Share on other sites More sharing options...
millsryno Posted February 19, 2007 Report Share Posted February 19, 2007 I use a table top drill press and it works very nicely. It really depends ont he size of the stirrer, too. You need to use a small stirrer or it will go way to fast. Just reduce the diameter of your stirrer. Go to Home Depot and look in the paint department at their paint mixer bits. Quote Link to comment Share on other sites More sharing options...
Fish_N_Fool Posted February 19, 2007 Report Share Posted February 19, 2007 I would go find an old icecream maker and use the motor off it. they are geared down to maybe 20 rpm's or less Quote Link to comment Share on other sites More sharing options...
braveviper Posted February 19, 2007 Report Share Posted February 19, 2007 Maybe you can rig a dimmer switch up to your drill. Quote Link to comment Share on other sites More sharing options...
Spike Posted February 19, 2007 Report Share Posted February 19, 2007 Try this company, they have ac and dc motors with gear reducers. http://www.surpluscenter.com/ Quote Link to comment Share on other sites More sharing options...
Delw Posted February 19, 2007 Report Share Posted February 19, 2007 grainger has a huge selection of small gear reduction motors in stock oil skimmer motors from the machine tool side work perfectly also and are around 300 or less Quote Link to comment Share on other sites More sharing options...
jmik26 Posted February 19, 2007 Report Share Posted February 19, 2007 Wire up a dimmer switch an you should be good Quote Link to comment Share on other sites More sharing options...
arkbuck Posted February 19, 2007 Report Share Posted February 19, 2007 the dimmer on your drill press will burn the motor out prematurely. now how fast it goes out will depend on how much you run it. but i wouldnt want to put one on a very expensive drill press. you can buy a router speed control unit that works the same way as a dimmer but is safe for the motor. try woodworkers supply. Quote Link to comment Share on other sites More sharing options...
jmik26 Posted February 19, 2007 Report Share Posted February 19, 2007 Please do explain arkbuck :popcorn:how it will burn the motor out and a router dimmer won't. Just curious.... Quote Link to comment Share on other sites More sharing options...
bassman843 Posted February 20, 2007 Report Share Posted February 20, 2007 I'm building one right now I should have it finished in a couple of days waiting for a control switch I bought off ebay for fan motors. Quote Link to comment Share on other sites More sharing options...
arkbuck Posted February 20, 2007 Report Share Posted February 20, 2007 It has something to do with the way the voltage is reduced. A dimmer switch just limits the voltage causing a light bulb to dim the router speed control keeps the voltage constant and reduces the speed in some other way. it is just like trying to run a 12v motor with a 6v battery it will run it just not for as long as a 12v battery will before the windings become too hot and the motor goes kaput. Quote Link to comment Share on other sites More sharing options...
Predator Bass Baits Posted February 20, 2007 Report Share Posted February 20, 2007 I bought a DC gear motor and switch off e-bay, I will post pics as soon as I can, I have a 58 rpm motor, I think maybe it should have been closer to 85 rpm, mine suspends the salt like we all want but I need to work on my paddle to make it work better. Quote Link to comment Share on other sites More sharing options...
jmik26 Posted February 20, 2007 Report Share Posted February 20, 2007 Thanks for the explanation arkbuck. Found this in a search Quote Link to comment Share on other sites More sharing options...
Vodkaman Posted February 20, 2007 Report Share Posted February 20, 2007 Dimmer switches are built around an electronic component called a triac. These are power rated, therefore, those fitted to dimmer switches are only designed for loads upto about 150W, drill motors can draw 600W or more. There are other problems using inductive motors with dimmers, the link below describes triacs in more detail, but basically, a dimmer for motors needs to be designed specifically for the purpose. Having said all that, several TU members are successfully using light dimmers to control small motors for drying wheels. A large drill motor may be pushing it a bit, be prepared for the worst. http://en.wikipedia.org/wiki/TRIAC Quote Link to comment Share on other sites More sharing options...
