1 Topic by heartless (edited by heartless 2016-08-14 18:36:36)

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Topic: stepper motor question....

Ok, so after sitting idle for a little while, I recently fired up the #2 SD4 (running on a Rumba) for a big print job (multiple pieces) it ran the first pair just fine, no issues at all..
On the 2nd run it started skipping on the Y axis...

Checked everything over - belts are in good condition and adjusted properly. No binding anywhere when moving by hand, all bearings/bushings recently lubed. Everything moves smoothly

Tried adjusting the vref with no luck...

swapped out stepper driver (twice) and adjusting the vref on that - still skipping... sad

I am at the point of considering a motor swap, but the problem is, I don't have a spare of the exact same size.
I do, however, have one that is a little taller... (stock one on the right)

http://soliforum.com/i/?2t6oqxz.jpg

I looked up the specs for both and this is what I have come up with..

http://soliforum.com/i/?UdC9CSF.jpg

Aside from the obvious size difference and voltage differences, will this thing work?
The board side connector appears to be wired the same way as the stock one was.
This motor is from the defunct Sintron kossel kit (i have 3 more just like it) that was supposed to run on a Ramps 1.4 board..

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

2 Reply by Tin Falcon

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Re: stepper motor question....

IMHO It will work . However you may notice a little reduced performance . The motor would be happier in a 24 v system .
the higher rotor inertia is also a small concern this could effect acceleration a bit.
I do not think it would hurt to try the motor.    my concern is a little sluggish behavior. On the other hand you may not notice a difference. I would say a motor on hand is worth three in the warehouse. And why spend money on a new one if not needed. the most you have to loose is the time to swap it in and out to test.

On days like  this I wish i had the wisdom of Opa( Dutch for Grandpa. A stepper motor expert . Distant relative )
Respectfully 
Tin

Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura

3 Reply by wardjr

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Re: stepper motor question....

It'll work just fine.

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3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
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Thanks to all for your contributions

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4 Reply by heartless

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Re: stepper motor question....

Thanks guys! appreciated. smile

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

5 Reply by Tin Falcon

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Re: stepper motor question....

Let us know how it does. I admit my answer on the side of caution . but bottom line it will work with no fear of damaging anything else.
Tin

Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura

6 Reply by heartless

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Re: stepper motor question....

will let ya know once I get the connector swapped out and get it installed & test... may be a couple of hours yet - got half a dozen other things going on too. tongue

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

7 Reply by heartless

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Re: stepper motor question....

1st test piece is going pretty well so far... (knocks on wood)

the real test will come in trying a 2nd one right away...

at this point, all I did was adjust the pulley for the loop belt, and increase the vref just a little from where it was for the smaller motor and it seems to be working fine.
and just to be sure, I cleaned and re-lubed the rods and bushings again. tongue

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

8 Reply by heartless

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Re: stepper motor question....

2nd test piece just completed successfully with no skipping. I am calling this one "fixed"!

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

9 Reply by Tin Falcon

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Re: stepper motor question....

Excellent good to hear.

Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura