I agree with the quick math I did yesterday... But again I have no info on these steppers..
And yes - I think it is totally usable at 35 ft-lbs.. there is some friction there also running the 'wave' generator... On Mon, Sep 13, 2021, 12:26 PM John Dammeyer <[email protected]> wrote: > Nice update. > My math works out as follows: > 35 lb-ft is 35 * 12"/ft * 16 oz/lb = 6720 oz-in. > You said the ratio is 100:1 so that means to get 6720 you only input 67.2 > oz-in. That's about 1/3 of what you suspect your motor can do. > > Something is wrong with this picture then. Especially since you were > effectively using static torque rather than the much lower torque when the > motor is turning at say 400 RPM. With micro-stepping you also get a > reduction in full step torque because the max current is now 0.707 x full > torque. And without closed loop encoder feedback you can quite easily have > to micro-step a number of times before you see physical motion. > > None of that matters other than that you have shown your mechanics can > handle 35 lb-ft which is all in all pretty cool ! > > John > > > > > > -----Original Message----- > > From: Sam Sokolik [mailto:[email protected]] > > Sent: September-12-21 5:50 PM > > To: Enhanced Machine Controller (EMC) > > Subject: [Emc-users] Minimally printed rotary. Initial torque testing.. > > > > Small update > > > > https://youtu.be/eW1GGI55Epc > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
