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Adjusting X and Y belt tension by frequency  

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Alex Huysegoms
(@alex-huysegoms)
Active Member
Adjusting X and Y belt tension by frequency

On the MK2(S) there is no specific value available for the X and Y belt tension.
However, I think it's very easy to give a reference value for this by determining the frequency when you "play" the belt like a guitar string.

You could measure the frequency with some app on your smartphone, but I prefer a much simpler approach: I listen to the tone and compare it with the sound of an online tone generator. Dead simple and you have it no time.

I found the following on my printer:
X-belt: 48Hz
Y-belt: 85Hz
I think I will need to do some tweaking on my Y-belt because 85Hz looks a bit much to me.

It would be interesting to see what others get on their printer (especially the pre-built ones).
And most of all: can the Prusa team provide us a value that we can use as a good reference? It just takes a few minutes to measure.

Posted : 03/12/2018 12:04 pm
Makakou
(@makakou)
New Member
Re: Adjusting X and Y belt tension by frequency

Thanks for this, but what is the correct speed to measure this frequency ?

Posted : 10/12/2018 11:36 am
John
 John
(@john-6)
Reputable Member
Re: Adjusting X and Y belt tension by frequency

I found the following on my printer:
X-belt: 48Hz
Y-belt: 85Hz
I think I will need to do some tweaking on my Y-belt because 85Hz looks a bit much to me.

It would be interesting to see what others get on their printer (especially the pre-built ones).
And most of all: can the Prusa team provide us a value that we can use as a good reference? It just takes a few minutes to measure.

I don’t disagree with the theory but according to your values and for the tensions to be the same - the x belt would need to be nearly twice as long as the y belt. (frequencies double with each halving of length). So I think something is not right.

i3 Mk3 [aug 2018] upgrade>>> i3MK3/S+[Dec 2023]

Posted : 10/12/2018 10:42 pm
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