# Motor encoder question **URL:** \ **Category:** Troubleshooting\ **Created:** [March 24, 2020, 12:15pm UTC](https://forums.maslowcnc.com/t/motor-encoder-question/12733 "2020-03-24T12:15:34Z")\ **Posts on this page:** 1\ **Showing post:** 49
**Author:** ![Metalmaslow](https://avatars.discourse-cdn.com/v4/letter/m/839c29/32.png) [@Metalmaslow](https://forums.maslowcnc.com/u/Metalmaslow)\ **Post date:** [October 5, 2020, 2:51am UTC](https://forums.maslowcnc.com/t/motor-encoder-question/12733/49 "2020-10-05T02:51:58Z")
![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/0/c/0c520eea9bf5034f3956c4d5e0354a5e8f92cae2.jpeg) 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: > **[motor gear,dc gear motor,etonm motor](http://www.etonm.com/products_detail/productId=38.html)** the encoder is 3 pulses per revolution so: 3ppr x 50 = 150 150 x 4 = 600 for encoder count settings our C beam Z axis either has a pitch of 2mm or 8mm depending on what kit you got. 2mm threads look almost horizontal, while 8mm threads have a noticible tilt to them. As @madgrizzle mentions above the firmware is coded for the original 12.6rpm of the orginal motor. so times both by 7 so: 4200 encoder and 14 pitch (assuming 2mm pitch, if 8mm then it would be 56pitch) if you want it even faster then times by 8: 4800 encoder and 16 pitch or Times by 9 = 5400 encoder and 18 pitch The encoder count settings and pitch need to be entered here in the hidden advanced settings menu: ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/9/4/94a862eec78357c110ff6cf734aa86d306ad25a9.png) --- _[View the full topic](https://forums.maslowcnc.com/t/motor-encoder-question/12733)._