NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 7, 2009 21:01:11 GMT -5
I'm starting work on my flat lap. I've invested in a set of 8" diamond discs from the rock lady, so now I need a machine to mount them on once they arrive. I got 2 motors like this at a garage sale up the street earlier this summer for $5.00 each. Looks like they're from industrial duty overhead door openers. Look almost like tumblers to me though. lol Today I got to my local farm store and picked up an arbor for the motor for $3.19. I'm so glad I stopped. I was all ready to order one on-line, but I prefer to keep it local if I can. I pulled a few things off the frame and mounted the arbor. I plan on puting a slinger on the shaft as drjo has explained in a different thread, and also using a PVC cap like Mudshark did on his to be sure to keep water off the motor. I'll probably keep my gravity fed water supply for now. Now I just need a little advise on how to wire it. I put black to black, and white to white on this cord and it ran, but I want to reverse the motor's direction. How would I go about doing that? I tried just red and white, but it didn't run. Do I need to add the yellow or blue to the red? Here's the cord I'm using. Thanks in advance for any advise or shared info. Nate
|
|
drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
|
Post by drjo on Aug 8, 2009 7:06:05 GMT -5
Congrats on the find! That's a good continuous duty motor . Hook the power cord to to the lines in (motor doesn't show colors), then switch the red wire with the black wire (change places) like it says on the case (that should be under the electrical cover on the motor, sometimes it's a little confusing). And that big pulley looks like a clutched pulley so don't thro that away, it goes to your new vibrating flat lap you haven't built yet . PS...What was in the box beside the motor? Keep us posted. Dr Joe .
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 8, 2009 21:59:06 GMT -5
Thanks Dr. Joe! The other motor is an A.O. Smith, with basically the same configutration on the frame. Ok, so let's see if I have this right. Put the blue and red together on one plug wire, the black and yellow on the other, and the white to the ground? Don't worry, I won't throw any of the spare parts away. I figured it wouild make a good start on another tumbler at least. I'll get a pic of the inside of the box. It was the "brain" I guess for the opener. Looks like limit switches and such to control the up and down for the door. P.S. Vibrating lap?!? You reading my mind? I've barely got this started and am already thinking of building something else! :cheesy: Nate
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 8, 2009 22:43:10 GMT -5
Ok, tried wiring it differently and it blows the breaker. Black from the motor to black on the plug cord and white from the motor to white on the cord powers up the motor. Guess the yellow, blue, and red are extra? I know this is easy, but I don't get it. Switch the black and red at the motor (under the little cover) should reverse the direction. I'll try that tomorrow.
BTW, I got my diamond discs in the mail today from the rock lady. Maybe I can get this finished tommorrow!
Nate
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 9, 2009 22:53:43 GMT -5
I spent most of the day working on this. I changed several things along the way, but I got it done. I took it apart and have the frame on the kitchen counter with a fresh coat of paint drying. It's been so humid here the last few days that I'm afraid the paint won't dry outside. I still have to change the motor wiring to reverse the rotation, but I'll do that before I mount it back up. Maybe I'll be able to try it tomorrow and knock out a cab quick. I think that 100 grit diamond disc should make quick work of shaping a stone. Thanks for looking. Nate
|
|
drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
|
Post by drjo on Aug 10, 2009 5:34:36 GMT -5
Looks great!! Can't even tell it was a garage door opener . Dr Joe .
|
|
|
Post by moondragon on Aug 10, 2009 6:26:45 GMT -5
OK Nate McGuyver:) That is awesome the way you figured all that out:) I am in awe. Nice job. Hey can you build me a red cadillac please:)
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 10, 2009 12:24:32 GMT -5
Thanks Dr. Joe. I got the motor rewired and have it running counter-clockwise now. I knocked out a cab real quick this morning. Will be posting it in the cabsection shortly for everyone's viewing pleasure. Moondragon - Thanks for the props, but I can't take the credit for this design. I just made my own version of what others have built. Sorry, I can't build you a caddy - I'm a ford man. It would have to be a lincoln lol! Nate Edit : here's the link to the thread about the cab - forum.rocktumblinghobby.com/index.cgi?action=display&board=ccabs&thread=32411
|
|
cman
starting to spend too much on rocks
Member since August 2009
Posts: 207
|
Post by cman on Aug 11, 2009 14:36:17 GMT -5
Thanks your giving me some great ideas. Have A Great Day, CMan
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 11, 2009 15:58:25 GMT -5
CMan, I have been told t his should not be running at motor speed. 1725 rpm is way too fast. I'll have to rebuild this with a shaft and some pulleys.
Nate
|
|
|
Post by johnjsgems on Aug 12, 2009 8:42:41 GMT -5
It sounds like you figured out how to reverse it. For others it is really simple. On data plate it says "to reverse rotation reverse red and black leads". These leads come out of the windings section into the terminal/connection location where you connect the cord. They generally are "stake on" terminals that simply slide on. Plug the black one where the red one was and the red one where the black one was. When connecting the cord if the data plate identifies a terminal as "ungrounded lead" that is the black wire on the cord. If it idenifis a "grounded lead" that is the white neutral wire Always attach the green ground wire (usually there will be a green ground screw). If you don't have a ground fault circuit use a GFCI adapter.
|
|
|
Post by johnjsgems on Aug 12, 2009 8:50:25 GMT -5
Oh, by the way, on your motor "line" refers to the cord wires, in case that isn't obvious.
|
|
drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
|
Post by drjo on Aug 12, 2009 13:56:43 GMT -5
Oh, by the way, on your motor "line" refers to the cord wires, in case that isn't obvious. WOW johnjsgems it's like deja vu all over again ;D Dr Joe .
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 12, 2009 16:20:35 GMT -5
Thanks John. I got the wiring figured out.
Dr. Joe - I saw your post about the mower deck spindle on another thread. I saw you post that previously, and forgot about it. I have the local co-op 1/2 mile away, so tomorrow I'm going to try to get down there and see if they have any spares lying around.
I'm going to try cabbing a harder material before I completely tear this down and rebuild it, but I do have a better design in mind if I do.
Nate
|
|
drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
|
Post by drjo on Aug 12, 2009 20:19:58 GMT -5
Cool, I'll wait right here for you to finish ;D. Remember...It's not redoing... it's just evolving Dr Joe .
|
|
|
Post by johnjsgems on Aug 12, 2009 22:29:09 GMT -5
Sorry Dr. Joe, I'm having attention deficit or old timers or something. I'd like to know where all the extra wires are connected. Since you uncovered the terminals to reverse, just where did the other wires connect? Usually extra wires are for multi speed motors. If that is from a door opener they may be internally wired to reverse the motor. If they connect to terminals I'd remove them and connect the cord directly to the motor terminals.
|
|
drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
|
Post by drjo on Aug 13, 2009 8:26:54 GMT -5
Your absolutely correct on the extra wires, they bring them out and route them thru overrun switches and the relay to reverse the motor (up/down). It would just be to much trouble to incorporate that stuff just to reverse the motor for this use (best to just remove or cap & tape them off well like you said). Now if it would have been a multi-speed motor that would have been cool. When ndk builds the other one, he'll only have to change disks half as often . Dr Joe .
|
|
bendsum
starting to spend too much on rocks
Member since October 2008
Posts: 140
|
Post by bendsum on Aug 13, 2009 11:39:59 GMT -5
or if he uses the whole mower deck he may not need to change them at all turn deck upside down and you have up to 3 disk going at once all ran from one motor would be kinda large and heavy though
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 13, 2009 22:14:29 GMT -5
You may be on to something there, bendsum. You could run 4 discs at the same time, 2 on each side. Let us know how it works lol. John, here's the photo you asked for. The blue circle is where the black wire was originally connected, and the white circle shows where the red wire was connected. I switched them to reverse the motor's rotation. The blue wire circled in red ( the black was originally connected to this wire ) goes inside the motor somewhere. As Dr. Joe said, I could probably wire the motor to run either direction, but first I don't know how, and second I probably would never need it. It would add to the cool factor though lol. I am going to add a junction box inside the frame to stuff all the wires into and have a clean plug cord coming out. I may add a switch, as it gets old unplugging to change discs all the time. I know for safety sake I should unplug anyway, so we'll see when I put the box in what I feel like doing. I did a chrysocolla cab today, forum.rocktumblinghobby.com/index.cgi?board=ccabs&action=display&thread=32467 , and the jury's still out on if I need to slow the motor down or not. Nate
|
|
NDK
Cave Dweller
Member since January 2009
Posts: 9,440
|
Post by NDK on Aug 18, 2009 21:02:33 GMT -5
I almost scored a rusty old mower deck today at the co-op for free. The spindles were in really good shape, so the guy didn't want to give it away in case they could use it on another machine...
I think I've come to the realization that I need to slow this thing down some. Gonna keep looking.
Nate
|
|