There is pitch and counts per revolution for the Z axis, together they tell the maslow how far it moves for each encoder count.
going from 3. to 24 indicates that your new motor is geared ~1/7 what the old one was, that’s a huge amount. What is the new motor you put in?
I put in the metal maslow one, all it showed me (which what I saw in that post a bit up from where someone mentioned 24), was this…
The original, which I never ran (it was actually broke from Maker Made, so they sent me one and just stored it) was the smaller one it comes with in the original kit from a year ago (so not the M2)
Your new motor is faster and has a different encoder count but the change should be in several settings, not just the pitch. I don’t have the settings handy, but they are on the forum.
I am not sure how to interpret this, but maybe I got bad info or misunderstood that “24” Sounds like I did!!! Maybe you would know with the Ridid router and that metal maslow upgrade Z axis what the pitch should be or have a calculation which I can run?
oh see I did not know it was several settings different, where I saw on forum it looked like 1. Let me try to find this then, I bet this is the issue!!! Thank you thank you!!! 
still hunting for it, but I do see a reply from Orob to someone that the pitch is -24…but that is for the Meticulous Z setup (which I have sled and setup for, just have to build it)…That is where I got that number from I bet which is clearly wrong…there is no belt on this setup, just a larger motor replacing the smaller one, with the original setup. This is my issue…has to be! I saw in the forum 24…probably not realizing it was for a different setup from metal maslow.
without knowing the motor it’s impossible to be sure.
but since you do have manual control, move it a known amount and measure how
much it actually moves, and then tweak the number until it’s accurate enough for
you.
David Lang
yeah I wish I knew how to provide you info on the motor. Its what they call the 10x faster motor upgrade that Metal Maslow has been selling (not the meticulous Z type setup). I included what they have on the site up above, but I am not sure any of that is useful. I do understand what you are saying sort of, and the more I read it’s more complicated than I thought…I do understand now that there is another setting besides pitch which needs to be changed. Trying to hunt the info down on the forum. You would figure that many have the Rigid router, and we all bought the same metal maslow upgraded motor right! lol Not so much as trying to find the settings
technically, as long as you are using the rigid router, the pitch of the lead
screw is going to be the same (8 tpi, so 1/8" pitch, 3.175mm)
what is different is the encoder steps per revolution. which is
encoder steps * 4 * gear ratio
but since the Z movement is pitch / encodeer-steps-per-rev so you can get the
right result by changing either value
David Lang
Not to jump into the middle of this and I’m not sure if its making a huge difference but it looks like the router power cord is ty-wraped to the Z-Axis motor. Could this cause a noise issue on top of all of this?
and I was just going to ask you about the pitch! lol The more I read, the more I am understanding. Since I am still using the rigid router, the screw part of IS THE SAME pitch it was, the -3.17 right? Then for the motor I found this from metal maslow, which now I think I change the encoder steps. then If use a new setup someday, , that pitch changes for the metal maslow meticulous Z because there is a screw and belt on there, something like that, but the motor encoding is the same still. Something like that I hope
Which brings me to this I found about the motor on the forum, and I think this is the other setting mentioned which I need to make right?
from metal maslow on forum: the encoder is 3 pulses per revolution so:
I opened up our Z axis motor to verify the gear ratio and if my calculations are correct it is 50:1 which is one of the ratios on etonms web site so hopefully more than a coincidence. but I’m not a gear expert so if anyone can please double check my work:
the encoder is 3 pulses per revolution so:
3ppr x 50 = 150
150 x 4 = 600 for encoder count settings
So…now I put the pitch back to -3.17 (from a whopping -24!), and change the encoding to this 600 based on this info and formula. Advanced setting area. 2 things to adjust. Please tell me now I am finally on the right track thanks to you 2
I have not heard any noise, is it bad to tie like that? I saw others, so honestly monkey see monkey do… and the more I look at it, is your concern as the sled rides higher…weight pulls down on the side of that motor…which now I wonder if NO good to tie?
David, thank you for the explanation by the way on how pitch works. This is extremely helpful. I like numbers, now I see it is threads per inch…why you were saying to see how far it traveled in a rotation, now all this is clicking. I am an Underwriter by trade, so math…love it!
Electrical noise. Interfearance caused by the AC power traveling through the power cord to the router can interfere with the control signals going to the Z-Axis motor. I’m not sure if it’s causing you any problems here but it’s considered good practice to keep the AC power cords and your motor cables as far apart as possible. Again, it may not be a problem for you here but I just thought I’d mention it.
I dont want to distract you from from what Orob and Dlang are helpng you work through. It’s something that can be looked at later.
No no this is great! Thank you, going to get those cables the heck off of there, I didn’t even consider that!!! Thank you
I am ready to make the change David, the default for the
Z-Axis Encoder Steps per Revolution is what I have right now.
The number of encoder steps per revolution of the z-axis default setting: 7560.0
Based on the faster motor, does the 600 make sense that it goes down that drastically? I want to make sure not missing something in that calculation… I think may need to x by 7 as I read on…but then not sure as they start talking about different pitches again for the meticulous Z
As @madgrizzle mentions above the firmware is coded for the original 12.6rpm of the orginal motor. so times both by 7 so
SO maybe 4200 should be the new number. Does that make more sense to try?
thanks!
exactly
go with your calculation, the original motor had far higher gearing than is
needed.
I haven’t looked at your images yet (I read the board through e-mail, text-only
at that, so it takes a few extra steps to check any images posted, but it lets
me be far more responsive for the things I can answer and still get through my
500+ emails a day 
)
David Lang
