Hey Guys - I think I might be missing something. I need to add a little tension on the filament as at higher speeds I am getting a little bit of clicking from the extruder skipping along the filament. I realized that after assembly I never added any tension. When I went to add some tension it seems there is no way to reach the screw. Anyone else run into this yet? Did I install something incorrectly?
No, you did everything right. Since the tensioner is a set it and forget it type of thing for the most part, it's set up so that you have to un-mount the extruder in order to adjust it. I've tried testing if i can get to it from the inside behind the motor to no avail. Oh well. Good news is that the titan is an awesome extruder, so if you set it right, it won't really lose tension over time.
Ok.. so I got this part resolved. I did have to remove the Titan in order to add some tension to the idler arm. after that then the stepper motor was missing some steps at the fast speeds. figured to check the config file and found the extruder set to .65A. I bumped this up to 1.0A and all is printing well. I am currently printing some hollow 20 mm test cubes in a 4-up pattern to test retraction and it is cruising right along at 200mm/s! This thing is going crazy fast and they are looking great!
Ah yes I neglected to mention in my brief assembly instructions that you don't need to slide the extruder all the way to the top of the extrusion, if you use the back panel cutouts as a guide you can align the extruder in such a position where you can reach the tension adjustment screw from the inside underneath the motor, that's why the cutout for the extruder is taller than it seems necessary! And wow 200mm/s?! I've never even attempted going that fast, but good to know it can handle it!