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Cooter Brown

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#1
I bought this machine on eBay in Ohio early 2017 for $350. It has the biggest 2HP 3PH motor I have ever seen, the motor runs great but I can't get it to run slower than 1400 RPM, the pin spanner nuts on the spindle and the clutch won't turn. So I can't get the machine to run slowly enough to run high speed steel tooling.

Does anyone have any ideas for removing those pin spanner nuts?

Thank you
20170514_062239.jpg 20170514_062326.jpg 20170514_061954.jpg 20170514_062347.jpg Office Lens 20170514-062432.jpg
 
Last edited:

T Bredehoft

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#2
Soak the pin spanner nuts a week in PG Blaster. insert pin wrench, rap quickly with a dead blow hammer until they turn.
 

Cooter Brown

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#3
I'll have to give it a try
 

markba633csi

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#4
A bit of heat from a propane torch might help also- and tapping around the nuts with a brass drift or hammer-cautiously
Mark S.
 

Cooter Brown

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#5
None of that works. I'm thinking of making a spanner wrench that goes on an impact gun.
 

PHPaul

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#6
Assuming the problem is corrosion, I have run into situations where PB Blaster (my preferred loose juice) won't get it done. In all of these cases (so far...) a homebrew of 50/50 Automatic Transmission Fluid and Acetone has worked wonders. Soak it good, let it sit, repeat two or three times over 24 hours and then some vibration/impact may do the trick.
 

brino

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#7
If you have a wrench that fits them you could try this tip from AvE.
He cuts off an impact hammer chisel and grooves it to use on the side of a wrench.

Please keep us updated of how it's going!
-brino
 

Bob Korves

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#8
I have all the penetrating oils, but after a lot of frozen stuff, my go to choices for tough jobs are 50/50 atf/acetone, and Kroil.
 

Cooter Brown

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#9
I'm almost just thinking about giving up on the pulley swap and just getting a VFD it's only a 2HP motor, about $250 VFD.
 

Cooter Brown

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#10
I have all the penetrating oils, but after a lot of frozen stuff, my go to choices for tough jobs are 50/50 atf/acetone, and Kroil.
I have tried all of that but I cant get anything other than motor nut to turn...
 

Cooter Brown

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#11
spanner.JPG
This is the tool I was thinking about making just a .5" disc with 2 pins 2" apart and a scrap socket pressed in the center.
 

Cooter Brown

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#12
Just finished the machine work on my overarm support. Sadly this machine came without the 3" bar and the support. 20170516_155213.jpg 20170522_234224.jpg 20170527_115215.jpg 20170526_122208.jpg 20170513_153553.jpg 20170526_123019.jpg 20170526_220758.jpg 20171020_203659.jpg 20171020_203643.jpg 20171020_203604.jpg 20170527_181240.jpg 20170529_161412.jpg
 

Cooter Brown

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#13
Now I just need to get the RPM under control because 1400 RPM is way to fast to run an overarm supported tool. I launched a 8 pound piece of steel across the room faster than you can react. Luckily I was standing on the safe side and was the only person in the room. Put a good sized dent in the wall 10 feet away.
 

Cooter Brown

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#15
20170526_175501.jpg
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I bored both of those holes on the horizontal mill and I was running it at 1400 RPM! I started by trying to use the Youlongdingdong boring bar set but after finding out that those aren't worth the time trying to get them to cut, I switched over to a carbide insert tool from Mesa tool and the chips started flying.
 

brino

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#16
Making chips.....and nice blue ones!
Congratulations!!

Once you get your RPM controllable you will have all kinds of things you can do.

-brino
 

Cooter Brown

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#17

Cooter Brown

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#18
Oops.....
 
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