[taigtools] Re: Motor Problem
- Ahh! The Motor SAGA (Or Drama?). Thanks, Lewis, for this incredible
list. You might take up a second occupation. "Thing Finder" -
Somebody wants something and you find it. Finders Fee, of course. I
followed the sad loss you suffered (motor) on the 7X10 group and that's
how I knew you started this group. Well here's my motor situation.
I've got several asian motors - some are out of balance and vibrate
like crazy, some just have bad bearings and I've fixed up two which
might be candidates for the Taig. All are induction motors. I used
the reference at Jose's web site, called Surplus Center, and got the
Universal (series wound) treadmill motor/controller. I've wired it up
and ran it (no load) and it is a very smooth quiet motor. Got several
questions about this motor that I think some of you guys have already
solved. Later on that. I bought a small gearhead 90V DC motor on
e-bay to try in the low RPM range and called Surplus Center back to get
their DC speed controller (which was discussed a little on the 7X10
group postings). The Motor ran fine (no load) on my 12V truck battery
and the controller from Surplus Center just came in the door from UPS.
We'll see how that goes. I also have a 130V DC motor (Bodine) which
I'm working on but it looks like the most promising one is the
treadmill motor. Finally I've been playing around with Car Starters,
especially the PM ones with their planetary gear systems. Of couse
these things would need a lot of modifications.
Now somebody over at the 7X10 group tried to read the tach output from
the treadmill motor and I thought he was going to put together an RPM
display or something but I never saw a follow-up on that. Also Jose
mounted his motor via the motor frame and I thought I'd try using the
resilient rubber rings provided on the motor. The provided fan blade
pushes air into the motor instead of drawing air through the motor but
I haven't heard anyone complain of overheating problems even at low
speeds. Still I'd like to chat with some real owner/users of this
motor. What are people using for fan shrouds? What do you plan to
use? Jose also used a 3:1 reduction pulley (I think) so he could get
the speed down on his 7X10. What do you think about that idea and why
(or when) does he need the low RPM's. The speed pot is very non-linear
and the speed adjustment is quite coarse in the higher RPM range. I'm
considering putting a 500ohm precision pot in series to fine tune it
but would appreciate hearing from a guru who has already dealt with
Well, etc. etc. Thanks again for the inputs - I was watching most of
these e-Bay auctions and won't be bidding against you since I'm up to
my eyeballs in motors right now. Charlie.
lewis balentine <lebmail0-@...> wrote:
> At 06:30 PM 3/30/00 -0800, "Charlie Carlisle" wrote:interested.
> >I need to throw something into this conversation. First I don't have
> >my Taig yet either - still working on the motor problem.
> ... SNIP...
> About that "MOTOR PROBLEM":
> Have you tried EBAY. They have several suitable motors ... some at
> very low bids because the sellers listed them with obscure titles
> or in the wrong areas.
> If you want AC fixed speed try these links:
> BALDOR MOTOR - NEW - IN BOX - 1/2 HP 1725 RPM, $45.00
> Leeson 1/2 HP 1-Phase Electric Motor-NEW, $25.00
> Dayton 1/3 H.P. Motor - NEW, $9.95
> 1/3 HP GE Motor BRAND NEW, $20.00
> EMERSON ELECTRIC MOTOR 1/4 HP - no reserve, $15.74
> If you are looking for DC (you need a speed controler):
> 1/4 HP, 90VDC Electric Motor, 1200 RPM, $25.00
> A little slow, but that could be fixed via the pulley.
> 1HP Permanent Magnet 24Vdc Motor, 1400 RPM, $75.00
> Lot of power, a little slow and a bit pricey.
> New Dayton DC Motor, 80VDC, 1725 RPM, $50.00
> 60VDC Motor, Shaft is 1/2 dia. by 1 3/4 long, $25.00
> A possible.
> 100 Volt 1 HP DC Motor, 1800 RPM, 8 Amps, $30
> DC Motor Controlers:
> MINARIK DC MOTOR CONTROLLER NEW allen bradley, $15.50
> I think this would work with the above motors, but you would
> need to know more about the subject than I do (I am learning).
> Doerr Electric PM DC Motor Controller, $92
> I dropped out of the bidding on this one.
> (I am watching this one ... let me know if you bid on it).
> KBMM-125 Solid State DC Motor Speed Control, $36.00
> These come up pretty regular. I have the specs if you are
> I am "LewTwo" on EBAY. Do try not to stomp on my bids ...
> of course I have not included those items.
> Jose also has a link on his page for a treadmill motor and
> controler that he has used. I has an open fan, so you might
> want to build a gaurd to put around it.
> Jupiter (just east of Neptune), Florida
- felice@... is Felice Luftschein and Nicholas Carter. See the Taig
Lathe pages at http://www.proaxis.com/~taig
> Btw, anyone know of a quick and easy (dirty?) way to make up aThe crosslide screw is loctited (red -heat needed) to the handwheel, be very
> C-spanner for the leadscrew dial backplates? The backlash on the
> top-slide and cross-slide dials is something shocking on my setup (the
> vertical milling attachment has escaped unscathed so far...).
careful adjusting these, as you can bend or snap them off easily. It may be
that you just need new nuts, which are certainly easier to replace.