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  #181  
Old Sun 19 November 2017, 17:56
Father-of-Ash
Just call me: Bilal
 
Toledo, OH
United States of America
Ok, I failed again.
Impatience and assumptions + MM = fail.
I'm assuming once again that these motors should tear the meat off my hand if I attempt to hold them.....
There definetly was a difference in the Kelling being 200+ oz. More powerful, but still didn't do the job.
Dampers seem fine. If I go with a heavier or lighter capability I will probably end up in same scenario but in opposite directions.
So I'm hoping gear reduction should be able to handle it.
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  #182  
Old Sun 19 November 2017, 20:20
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
So are you saying you got your motors and still have an issue?
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  #183  
Old Sun 19 November 2017, 20:22
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
also remember that 200 in-oz is 200 ounces at 1 inch at maximum torque or 12.5 lb at 1 foot.
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  #184  
Old Sun 19 November 2017, 20:29
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
I use a 880 oz-in motor for my z. I use a ball screw for mine and it is overkill but I already had it. Still even with that I have a extension spring to equalize the weight of the Z so it will not free fall. Re-familiarize yourself with the properties of a stepper motor. It sounds like it is a weight issue to me. That is why I asked if you helped assist the motor if it would rise. You are using the same computer/program/settings right?
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  #185  
Old Sun 19 November 2017, 20:30
pblackburn
Just call me: Pete #98
 
South-Central Pennsylvania
United States of America
If you swapped the motor to your X or B axes (assuming they are the same motors) and they move that axis fine I would lean toward a weight issue. If you can't swap it with one of those then use the Y.
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  #186  
Old Sun 19 November 2017, 21:07
Father-of-Ash
Just call me: Bilal
 
Toledo, OH
United States of America
Yes Mike, same issue although not really an issue, I'm just expecting too much out of the motors.
Pete, first thing I should of done is refamiliarized, but my time is limited and I got impatient.
It would rise if I assisted it, but seemed way too weak of a motor, again just expecting much more, which is my fault.
I'm going to try other then McMaster Carr for a damper in closer range..
Pete, other then that, I'm gonna work on some reduction boxes using your files, just try and make them look sexier.
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  #187  
Old Mon 20 November 2017, 10:14
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
Just so I understand. These motors move X & Y just fine?
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  #188  
Old Mon 20 November 2017, 11:39
Father-of-Ash
Just call me: Bilal
 
Toledo, OH
United States of America
Yes Mike, the pk299 move the x & y fine, but fairly close to skipping steps( very heavy gantry tubes + y-car stuff). Pk299 wasn't tough enough for the Z's either, that's why I thought I had motor issues. And the Z,s didn't seem too tough to pull back up/ push down... Again just complete ignorance on my part about the motors.
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