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View Patrickgeddes14's profile

Chinese $200 lathe

by Patrickgeddes14
posted 11-28-2018 01:28 PM


18 replies so far

View HokieKen's profile

HokieKen

9607 posts in 1534 days


#1 posted 11-28-2018 01:50 PM

Can you change belt location? Sounds like you might be on the high speed/low torque range. Your probably screwed if not…

-- Kenny, SW VA, Go Hokies!!!

View JayT's profile

JayT

6211 posts in 2607 days


#2 posted 11-28-2018 02:05 PM

Is the motor wired correctly? Some of those motors are dual voltage and have to be wired right for the current. If you post some pics of the motor plate and wiring, someone may be able to help diagnose if that is the culprit.

-- https://www.jtplaneworks.com - In theory, there is no difference between theory and practice. In practice, there is.

View Patrickgeddes14's profile

Patrickgeddes14

143 posts in 211 days


#3 posted 11-28-2018 03:56 PM

Couldn’t get pic of motor

View HokieKen's profile

HokieKen

9607 posts in 1534 days


#4 posted 11-28-2018 04:04 PM

Move that belt to the other end. Smallest diameter on the motor and largest diameter on the spindle. That should help with the stalling issue. What are you using to test with? In other words how big is whatever you have mounted?

-- Kenny, SW VA, Go Hokies!!!

View GrantA's profile

GrantA

1512 posts in 1803 days


#5 posted 11-28-2018 04:08 PM

You mentioned it’s a dedicated 240v circuit but I’ll bet a dollar that bench top lathe is a 110v machine all day long. Are you sure you’re feeding it the right juice?

View Phil32's profile

Phil32

553 posts in 299 days


#6 posted 11-28-2018 04:12 PM

I have a HF lathe just like that. It’s 110V and works fine.

-- Phil Allin - There are mountain climbers and people who talk about climbing mountains. The climbers have "selfies" at the summit!

View HokieKen's profile

HokieKen

9607 posts in 1534 days


#7 posted 11-28-2018 04:15 PM

If that’s the HF lathe, then it should work well. That lathe has a good reputation as a solid machine.

-- Kenny, SW VA, Go Hokies!!!

View waho6o9's profile

waho6o9

8652 posts in 2973 days


#8 posted 11-28-2018 04:23 PM

Adjust the belt.

View ScottM's profile

ScottM

736 posts in 2542 days


#9 posted 11-28-2018 04:43 PM



Adjust the belt.

- waho6o9

Just about to suggest that. Have seen others have motor start up issues because the belt was too tight…

View sepeck's profile

sepeck

402 posts in 2537 days


#10 posted 11-28-2018 04:47 PM

If it’s a Harbor Freight one, there are a few YouTube videos on tuning them up.

-- -Steven Peck, http://www.blkmtn.org

View Underdog's profile

Underdog

1340 posts in 2431 days


#11 posted 11-28-2018 05:14 PM

I don’t think they even sell that lathe anymore.
That’s the one with the stamped square tubing for bed ways? And the bent sheet metal base?
I started with one just about like it.

I don’t think it’s 220V. It’s gotta be your voltage.

-- Jim, Georgia, USA

View MrUnix's profile

MrUnix

7388 posts in 2595 days


#12 posted 11-28-2018 05:27 PM

I don t think it s 220V. It s gotta be your voltage.
- Underdog

Well… if it’s wired for 120v and being run on a 240v line, it will fry. However, if it’s wired for 240v and being run on 120v, it will exhibit the symptoms described. I’d start by checking to make sure that it’s getting 240v. I’ve seen more than once where one leg of a 240v circuit was bad.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View Underdog's profile

Underdog

1340 posts in 2431 days


#13 posted 11-28-2018 05:30 PM

Here’s a review of the lathe on LJ.
http://lumberjocks.com/davidmicraig/blog/20993
I’m in agreement with his assessment. Since I was given mine as well, it was worth the price.
But I wouldn’t pay money for one. I’d spend a few more bucks to get solid cast iron, and some standard tapers/spindles/banjos/locking handles.

-- Jim, Georgia, USA

View Underdog's profile

Underdog

1340 posts in 2431 days


#14 posted 11-28-2018 05:33 PM



I don t think it s 220V. It s gotta be your voltage.
- Underdog

Well… if it s wired for 120v and being run on a 240v line, it will fry. However, if it s wired for 240v and being run on 120v, it will exhibit the symptoms described. I d start by checking to make sure that it s getting 240v. I ve seen more than once where one leg of a 240v circuit was bad.

Cheers,
Brad

- MrUnix

My thought was that the start/run capacitor could be fried. That would account for slow starts and no power. Does that thing even have a capacitor is the question.

-- Jim, Georgia, USA

View Woodknack's profile

Woodknack

12817 posts in 2776 days


#15 posted 11-28-2018 05:56 PM

Send it back. If you have to repair it out of the box might as well buy a vintage lathe and repair it, that way you’ll have something.

-- Rick M, http://thewoodknack.blogspot.com/

View Patrickgeddes14's profile

Patrickgeddes14

143 posts in 211 days


#16 posted 11-28-2018 07:39 PM

https://youtu.be/kF0mgdg2trM

Here’s a quick demonstration I made of the machine in issue. I noticed as I turned it on that I have the belt in the 3400 rpm..but I’m in the roughing stage, so I have to switch to 1100 rpm first thing after hearing back from yall. That might solve some of the issue, but does that mean I need to bolt the machine directly to the concrete floor instead of with the homeade table to run the machine without it shaking at the 3400 rpm?

View HokieKen's profile

HokieKen

9607 posts in 1534 days


#17 posted 11-28-2018 07:44 PM

The vibrations will abate, or at least be lessened, when you get the workpiece balanced. That’s a pretty long piece that isn’t round yet. If you mount a 2” dowel that’s only 6” long and turn it on, you’ll see a big difference.

-- Kenny, SW VA, Go Hokies!!!

View Underdog's profile

Underdog

1340 posts in 2431 days


#18 posted 11-29-2018 08:15 PM

Holy Crap.
I have DejaVu. I had a bigger blank than that on mine at that speed, and it literally walked towards the end of the table. I was a beginner when that happened, and I had no idea what I was doing. I was running at a high speed with an unbalanced blank, and using dull scrapers to to shape the spindle (a lighthouse). Took forever even after literally nailing the thing to the bench. I later made a torsion box to keep the centers from springing apart when tightening down the tailstock.

It should spin up faster than that. Something is definitely wrong if it doesn’t run up to RPM quicker than that.
Course, it’s only a half horse moter, right?
My Jet mini 1014 1/2HP would spin up quicker unless the capacitor was bad.

-- Jim, Georgia, USA

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