damn chinese electric motors!!!
Well, the ‘new’ (2 month old) lathe acted up AGAIN today. Motor is a pos! I had heard on the machining forums that the Chinese motors lacked a lot in quality but didn’t expect this much trouble.
About a month ago motor would turn but made a terrible BUZZING noise. Shut it off immediately and contacted the MFR. Was told it was probably the points in the motor not contacting properly and an adjust would fix it. I took his instructions and after three tries (taking the motor apart each time) it was fixed……….for about a week. Adjusted again……… And so it has gone I think I’ve been into the motor on 3-4 separate occasions now. Been good for a couple weeks now and thought it was finally fixed……..until today it does it again 👿 👿 👿
‘Course its the weekend so no help available. Maybe tmrw I can get them to send me a new motor but then its a week shipping time from the west coast to me 😡 😡
Considering just getting a Baldor or GE replacement motor but DAMN something this new should not require me to do this kind of shit.
Guess I’ll find out if their customer service is worth a shit in the morning.
End of rant. Feel better now having vented a little
still pissed at Shopmaster though.
Later.
note: to a couple guys waitin on parts, I may be a little slow gettin’ em out.
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Viewing 11 replies - 1 through 11 (of 11 total)
Who was it that was teasing Yellow Ninja about always having to work on his machine instead of just making stuff?
That was not you was it 😉 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆
thanks, got a bunch of reading to do to figure everything out on this one. it would be really nice for thread cutting to be able to slow things down to a crawl and still have enough torque to cut well. will make it a lot easier to start and stop the feed at the right time.
I snagged a couple cheap/free treadmills recently for my lathe. I haven’t performed the surgery yet, but my plan is to leave the original motor in place (belt removed) and put the treadmill motor along side.
While the motors don’t have a great “grunt” at low speeds, they have a very high top end speed. Speed reduction through pulley size might help a lot.
My motor controllers have adjustments for min and max speed, torque, and some other name that escapes me currently. One of them had a big RF choke that seemed to really take out the growl at low speeds although it isn’t entirely necessary.
It’s a DC motor, so a high current DPDT switch would allow you to reverse it easily after the controller.
finally just took it to an elec. motor guy locally. he tweaked a little and got it working, I think one of the long screws that hold the housing/ends together was intermittently shorting to the windings. Keep getting run around from manufacturer. try this, try that, etc.
Got it back together Thurs night. Seems OK but still not sure it will last, the repair place did basically the same thing i had done on a couple other occasions.
Found a place local with a Baldor motor for good price so if it F’s up again I’ll probably just change it and be done with it.
Also going to research DC controllers and start watching the yard sales for a big treadmill. If I read the machining forums right, low rpm is way below rated torque so for conversion want 1.5-2x the hp rating of the original ac motor to maintain performance.
You get it fixed yet?
Sucks having to work on these machines instead of working on stuff with em don’t it 😛
Yep, they work fairly well. And on the cheap!
Look in your local classifieds or Craiglist. Folks are practically giving them away.
1.5hp 110v
Treadmill a good idea.
I dont know what size motor you have but a GREAT source of DC motors is old treadmills. You get a big continuous duty motor and a controller for cheap or even free.
Look in your local classifieds or Craiglist. Folks are practically giving them away.
a good Idea
will have to research power converter, controller, motors, etc. Prob. out of budget at least for the time being but I have seen others do this with good result, so thanks for reminding of that possibility.
If you end up replacing it why not go with a DC unit and get variable speed adjustment with a controller?
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That was not you was it 😉 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆 😆
who me?? 😯
really though, I knew this was a risk.
if I expected a perfect machine I’d’ve bought a Clausing and bridgeport.
oops, and if I had unlimited funds to play with. Can’t afford that good shit. Do the best I can with what I can.