Singer 111w155 timing question

[Gufnstuf]

Hello all,

this forum helped greatly in helping me identify the machine that I wanted and most anything I needed to know. 
however, I have one issue that I can’t seem to find the answer to. 
my machine sews pretty well, and I have outfitted it with a consew servo motor and eps. Works awesome. 
the question I have is that when my needle comes to the peak of the up stroke, my bobbin thread is still hooked. I have to advance the hand wheel 20-25 degrees before the thread releases to pull out so I can cut it. 
I have checked the timing from the hand wheel to the bobbin shaft as shown in the manual and it’s dead on. 
its a minor inconvenience but the needle has already started dropping by the time the thread releases and seems wrong.
Maybe that is just how these machines are, but if it’s not I want to fix it. 
 

thanks for any guidance. 

[friquant]

Trust the machine. (not the motor haha)

To understand when is an appropriate time in the stitch cycle to pull your material free, you can stitch slowly (handwheel!) with the bobbin cover removed.

I both start and end my seams with the takeup lever at the top of the stroke. Depending on which model of digital servo motor you have, there may be adjustment within the menu to configure how much rotation happens between what the servo considers Needle UP vs Needle Down.

I suppose in my wildest dreams a needle positioner might default stop for needle down a little after the hook point grabs the thread. Then when I heel tap it would first rotate to where the takeup lever is at its highest point (to lock the last stitch), then reverse ten or twenty degrees and come to a stop when the needle is at its highest position so it's easy to pull the material out. ☺️

[AlZilla]

Exactly, just tweak the stopping point until it stops with the tension arm all the way up. I'd have to go sit down in front of a machine, but it should be pretty close to the moment the needle is all the way up.

[Gufnstuf]

So that is kind of what my question is. On this machine, the needle top of stoke happens 20-25 degrees before the take up arm reaches its top of stroke and that is when the bobbin thread releases. 
 

top photo marked 0 is needle top of stroke, bottom marked R is take up top of stroke. 
 

 

[friquant]

17 minutes ago, Gufnstuf said:

On this machine, the needle top of stoke happens 20-25 degrees before the take up arm reaches its top of stroke and that is when the bobbin thread releases. 

On my singer 144, the needle top of stroke happens 55 degrees before the takeup lever reaches its highest point.

This video by @Gymnast is also informative: 

 

[AlZilla]

I just went upstairs and looked to be sure. My 111w153 acts like yours. I never paid much attention but the other 3 machines up there all do the same thing. I don't even think it's possible to adjust the timing of one to the other. 

Just tweak where your "needle up" position stops.

[Gufnstuf]

Perfect, I assumed it was right but with the positioner working it just looked funny. 
 

thanks. 
 

btw, that video is great explanation.