jerk setting e3d titan with 800mm bowden

[marzubus]

I am trying to wrap my head around the jerk setting for my e3d titans on my e3d motion system tool changer.

The default M566 was E2:2:2:2, but I am now tuning for pressure advance, but have no idea on the range to use. I set it to 300 initially, but over 350 I start to hear odd sounds from the extruded which Im just not used to, so no idea if they are good sounds or bad sounds.

For my massively long bowdens, I need a fairly high PA value, like 0.7. What is the "working" range for acceleration for a Titan with this much PA?

; E3D Revo Micro Hotend
M566 X400 Y400 Z8 C2 E2:2:2:2 ; Set maximum instantaneous speed changes (mm/min)
M203 X35000 Y35000 Z1200 C5000 E5000:5000:5000:5000 ; Set maximum speeds (mm/min)
M201 X6000 Y6000 Z400 C400 E2500:2500:2500:2500 ; Set accelerations (mm/s^2)

[dc42]

@marzubus you can find the settings I use at https://github.com/Duet3D/RRF-machine-config-files/tree/master/E3D_Tool_Changer. But TBH although I have two of the original Titan bowden tools on my TC, I never use them. I've not had good experiences with the Titan and after having issues with one on my delta printer, I replaced it with a Bondtech BMG and never looked back. My E3D tool changer now has two Hemera tools and those are the ones I use. I'll probably convert the remaining original tools to Revo Roto.

[marzubus]

@dc42 Thanks for reply. Ok ill give up on the Titans then, I am thinking of moving my original Hemeras to be Bowden extruders, as they are too heavy for moving at reasonable speeds. I guess I have my answer then. TItans out, Rotos or something light for direct.