Z-Axis Problem, Couplings run irregular

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Friedl792
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Joined: Sun Oct 22, 2017 4:46 pm

Z-Axis Problem, Couplings run irregular

Post by Friedl792 » Sun Oct 22, 2017 4:55 pm

Hello,

I assembled my Prusa i 3 pro W yesterday and the z-Axis won't move properly in the lower section. I took of the threaded rods and let only the motors spin. You can see in this video, that the couplings are not running smoothly.

https://www.youtube.com/watch?v=ZAB0yCwdXXA

https://www.youtube.com/watch?v=UuYjFVqSOxI

In the second video i put on the threaded rods again. In the upper part the motors can move but you can see it is very irregular. The Rods are straight. Do I need new couplings or can I fix this somehow?

Friedrich

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William
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Posts: 6340
Joined: Tue Jun 07, 2016 9:38 am

Re: Z-Axis Problem, Couplings run irregular

Post by William » Mon Oct 23, 2017 10:14 am

I think you should mount the couplings as I show you. The shaft of the motor should go into the hole of coupling more length.
coupling.jpg
coupling.jpg (57.08 KiB) Viewed 5106 times
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