Happy New Year! I finished up my DC motor mod and thought I'd post a couple of photos (see Jeff's 9x30 Motor Mod) to show how the large 56C frame motor fits. I...
3758
bluzboy
Jan 4, 2009 7:59 pm
Can you give some more specific information about the motor that you used (model number), and also, information about what you did for the Ratiotrol controller...
3759
velocirex64
Jan 5, 2009 12:58 am
I used a Pacific Scientific 90 volt, 1 hp TEFC motor that I found on ebay, PN SRF-3756-4996-84-5-56BC-CU. You can see details on Pac Sci motors here .....
3760
C Smith
lathesmith
Jan 5, 2009 1:41 am
Jeff, Nice conversion job! That motor will be more than adequate for any job that you will reasonably tackle with the 8x lathe. To those considering a similar...
3761
velocirex64
Jan 5, 2009 2:01 am
Thanks Chris, One other thing to think about is the motor shaft diameter. The Pac Sci motors are like most in this range with a 5/8" shaft which is a loose fit...
3762
C Smith
lathesmith
Jan 5, 2009 2:21 am
Jeff, That's a very good point. That Boston Gear 1/4 horse TENV motor I am currently using came with a 1/2" shaft. I turned and bored a sleeve with a lip on...
3763
Charles Mortimer
g1fak
Jan 5, 2009 2:32 am
OK a motor change why for what reason or did you burn the original motor out then I can see the point of going to a better motor providing the original...
3764
C Smith
lathesmith
Jan 5, 2009 2:51 am
Hi Charles, no cat among the pigeons here. This is just one of those mods that some of us do that makes our machinery more useful to us. If you find yourself...
3765
Charles Mortimer
g1fak
Jan 5, 2009 4:06 am
halloo Chris I can understand about threading 125 is much to fast to come up to a shoulder that is a very good valid answer and wont argue about that one...
3766
hitekhardware
Jan 5, 2009 1:50 pm
Speaking of variable speed...why don't one of you guys figure out how to take the dro out put on your lathe's cross feed and feed it back to the spindle motor...
3767
Charles Mortimer
g1fak
Jan 5, 2009 3:18 pm
hallo Reggie what digital speed read out lathe master dont have one ,,,,, I don't follow that train of thought the power feed is constant,,,, and the cross...
3768
hitekhardware
Jan 5, 2009 4:19 pm
Sorry Charles, didn't mean to spoil your night. What I do now when I face a piece of stock in my lathe (I have a DC variable speed motor) with one hand I turn...
3769
velocirex64
Jan 5, 2009 5:59 pm
One way to do this is to make use of the tachometer input to your DC motor controller (assuming your controller has it). On the Ratiotrol, it has a tachometer...
3770
hitekhardware
Jan 5, 2009 8:14 pm
I guess I will have to go to a "real" control system and motor. Probably aught to buy a real lathe also. My lathe (1940 Atlas severly modified including frame...
3771
velocirex64
Jan 6, 2009 12:36 am
To be clear, even without the explicit tach feedback, a good DC controller will use armature voltage feedback to regulate speed loosely. The Ratiotrol spec...
3772
Bernie
tonypfei
Jan 6, 2009 12:49 am
Hi all. This is my first post here since becoming interested in the Lathemaster lathe. DC motor mods have been a subject of interest to me latley and I have...
3773
velocirex64
Jan 6, 2009 1:55 pm
Bernie, You can forgo the planetary gear if you will use a DC motor and a reasonable quality controller. The primary purpose of the planetary gear is to slow...
3774
Bernie
tonypfei
Jan 6, 2009 2:58 pm
Thanks. would there be any advantage to having both? I am totally inexperienced at this stuff. Would there be any need to go say 25 rpm? Sent from my iPhone ...
3775
C Smith
lathesmith
Jan 6, 2009 3:23 pm
Hi Bernie, I totally agree with Jeff here, the planetary gear is really a waste of effort with a good DC setup. The only way you might consider it is if you...
3776
bluzboy
Jan 6, 2009 3:49 pm
One of the objections that I hear to this kind of set up, with variable speed motors, is that the controllers seem to have a penchant for failure. Is this...
3777
Charles Mortimer
g1fak
Jan 6, 2009 4:44 pm
crikey reggie you started summit here all this grey matter sloshing about is bas for the digestion ... From: velocirex64 To: lathemaster@yahoogroups.com Sent:...
3778
velocirex64
Jan 7, 2009 12:18 am
Motor controllers are big heat dissipators, as such they are subject to misuse and overheating which may be part of the perceived high failure rate. I would...
3779
Charles Mortimer
g1fak
Jan 7, 2009 1:52 am
I think you are dead right there scr/fets can go at the drop of a hat,,,,, also there's not many people who rebuild these boards especially for those people...
3780
Charles Mortimer
g1fak
Jan 7, 2009 3:25 am
hallo Reggie Charles returning not a problem I hit the sack and that was it I had a bit of thought what you where thinking about but too bulky for your set up ...
3781
hitekhardware
Jan 7, 2009 1:14 pm
Hi Charles, I know what you mean about the South Bend! When I closed down the manufacturing part of Hitek Hardware, Inc. and became a "Consultant" I gave my...
3782
velocirex64
Jan 7, 2009 1:14 pm
I hear ya Charles. We may have to drag you kicking and screaming through the 00's as well to get you up to speed on this newfangled gear! :o) If your X3 board...
3783
C Smith
lathesmith
Jan 8, 2009 8:05 pm
Yes, the controller in the X2 or X3 mill could easily be replaced with one of the multitude of inexpensive, but much heavier-duty DC controllers that one can...
3784
velocirex64
Jan 9, 2009 12:54 am
Hee, "light milling" is a relative term. The X3 would be an upgrade wrt the cutting power of my little Taig. ... machine,...
3785
Charles Mortimer
g1fak
Jan 9, 2009 3:18 am
halloo Reggie hang on to that south bend I am getting on the plane years ago machinery was a slave to us ,,,, sadly to say men are slaves to there machines...
3786
Charles Mortimer
g1fak
Jan 10, 2009 3:43 pm
hi I would do if I could find one in this country that was compatible also the exchange rate would ad to the cost then there is your postage which would add...
