I have bench tested mine at 48v with AM882 driver. I ran them to a theoretical 400mm/second and 1500mm/second acceleration before they stalled. If you follow any of the Facebook CNC pages, I can post a video there.
My thread is here if you want to check for updates. My base is finished. X Gantry will be finished tonight, I think I'll have all the physical construction finished by tomorrow night then it's on to electronics. I think I'm still about 3 - 4 weeks away from finishing.
Oh yeh, I'd seen your build thread. I like it. I've gone with wood initially as I was worried about calculating weld shrinkage for some areas. I really like your Z gantry though. I like the rails on the side keep it closer to the Y gantry but I still need 45mm space for my ball screw. I expect my machine to go through a few mutations before I'm happy with it in the end. I have already planned one with me hand cutting some parts just to get the machine up and running then I'll use the machine to more accurately recut the parts which I'll swap out with my dodgy hand cut parts.
Further on my bench test. The theoretical speed thing is calculated in LinuxCNC. You enter the drive ratio and screw lead then it works it out against RPM. There is no way my screws will handle anywhere near that speed. I reckon I'll tap out able 100mm/second. That's about 240 IPM. More than I'll need.
The motors got warm on my hand and I thought they were getting too hot but I've since found 60 - 70 degrees C is fine but getting over 80 might be a bit much. I'm no where near that so I'm not worried but I think I would have been fine with 36 volts and been kinder to the motors. 5mm lead gives my plenty of torque.
I just read you have 1610 screws. I think you'd be fine with 36V. I'm on 1605 screws and at this stage I highly doubt I'll have any problem achieving 240IPM.
Disclaimer though. I'm no expert. My machine isn't up and running yet.
Thanks Joel, I have read through your thread and hundreds of others over the last several years trying to gain inspiration to finish.
Most of the mechanical was done 15+ years ago other than rails & ball screws. Electronics is my weak point of this project.
I know just enough to be dangerous but am learning more & more.
I have done maintenance & repair on many cnc mills & lathes at most of the places I have worked at but most was mechanical, hydraulic or pneumatic parts replacement not much electronic.
I have also looked at the 381/382 oz motors also but thought I would roundup to an even number.
Just wanted some motors that would be reliable and not disappointing.
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