Page 1 of 1
i3 Pro C belt question
Posted: Tue Dec 29, 2015 5:55 am
by riftware
I've been trying to find the proper specificatons for the x and y carriage belts and the cog that goes on the stepper motor.. I've seen T2 or GT2 as possible belt types but it would help me to know:
Belt type and pitch (2mm?)
Cog teeth count and pitch
I'm trying to lay in some spares just in case.
Re: i3 Pro C belt question
Posted: Wed Dec 30, 2015 5:37 pm
by Mark
the belt is GT2, 2mm and the cog is 20 tooth, d5mm.
Re: i3 Pro C belt question
Posted: Tue Jan 19, 2016 3:32 pm
by nesh
the in the Pro C (marlin) firmware that i have downloaded from a link in the forun it states:
#define DEFAULT_AXIS_STEPS_PER_UNIT {78.74,78.74,2560,95} // MXL, Z M8=1.25, MK8
MXL has 2.032mm pitch and GT2 is 2mm which makes 80.0 steps (1/16)
If my printer has GT2 belts that the 78.74 is wrong. How can i, for shure, find out what belt do i have in my Pro C?
Re: i3 Pro C belt question
Posted: Tue Jan 19, 2016 3:46 pm
by Mark
ignore the MXL in the firmware, the actual belt is GT2 and the steps should be 80 too, maybe it is optimized, can't for sure, you can test it.
Re: i3 Pro C belt question
Posted: Wed Jan 20, 2016 5:19 pm
by nesh
I have tested it and can confirm that 80 steps is much better value for Pro C. The tolerances is more precise now. Geeetech may consider to change the value to the correct one for GT2 belts next time they update firmware.
Re: i3 Pro C belt question
Posted: Wed Jan 20, 2016 9:39 pm
by Mark
yeah we'll test it and update it later.