Why is my speed much lower than my my setting speed?

[thanhtacles 1]

This outer wall is suppose to go at 26mm/s. It's showing as 14. I've exhausted every explanation and there are no results for something this niche. What edge case is this.

[GregValiant 464]

What are the F numbers in the gcode like?  At 26mm/sec you should see F1560 below  a line that is ";TYPE:WALL-OUTER".   If you see F840 then yes, it's moving pretty slow. 

I don't know that analysis software but I can't see anything in your preview that is as dark a blue as the left end of the scale is.  At the right end - is your travel speed 190 or are you printing that fast?

[thanhtacles 1]

Look at the outer walls. It should be 26, not 18.27. This is not a minimumlayer time issue, I have that set to 1. What else could it be?

 

[thanhtacles 1]

On 9/26/2020 at 3:58 PM, GregValiant said:

What are the F numbers in the gcode like?  At 26mm/sec you should see F1560 below  a line that is ";TYPE:WALL-OUTER".   If you see F840 then yes, it's moving pretty slow. 

I don't know that analysis software but I can't see anything in your preview that is as dark a blue as the left end of the scale is.  At the right end - is your travel speed 190 or are you printing that fast?

That's cura if you set the color scheme to speed

[Smithy 986]

I have merged your second thread about the same issue to this thread. It makes no sense to open several threads with the same question.

[GregValiant 464]

The average speed across a distance never hits the design speed because of the Accel and Decel at the beginning and end of any run.  Higher accelleration settings can get it closer, but the average can never equal the design speed because the speed at either end of the line is going to be zero.

So the difference you're seeing may be just that - the 18.27 is the average from beginning to end though it may be hitting 26 in the mid portion.  I'm not 100% sure that view is giving the average, but it's reasonable or you wouldn't see any corners because we know the speed in a corner is zero.  So whether you have acceleration and jerk control turned on or not, you can't average 26 across the line.

(I can only run Cura in compatibility mode due to this old laptops video card.  I'm about due for a new computer.  I've known I was missing out, but that view is pretty cool.)