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victrola

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Reply with quote  #1 
121706-manual-excerpt.jpg

Does anyone else have this old style of zigzagger, Simanco 121706? Does it work well for you? If so, on which machines?

I have tried it on several of my low shank machines (128, 221, Elna Grasshopper just for kicks, probably also a 99 at one time, not sure if I ever put it on the 201). It never works consistently - it might zig zag for a few stitches before sticking at straight. Lever "D" is not the culprit, it is swung out so that it does not interfere. My guess is that elsewhere in the mechanism, the tolerances are very small, and something got just imperceptibly bent enough to work intermittently.

I have noticed that the common buttonholer (the one that often comes in the green "treasure chest") works well with a 15, 221, or 201 but not with 3/4 machines (99, 128) which seem to have a different amount of needlebar travel. That is one reason I tried this attachment in different machines just in case, but that didn't help. It is well oiled, so parts move as they should.

I am guessing Singer decided it wasn't a good design and replaced it with Simanco 160985 for both reliability and variety (cams). I doubt I will ever use this attachment that much, but it's so cool in its simplicity that I want it to work.

Asides:
1. To date things, the manual which I found online somewhere says copyright 1937/1938/1939.
2. I find it quite interesting that there are two attachment points ("B" in the picture) with the upper hole for class 101 machines and the lower hole for all other (low shank) machines. Using the upper hole doesn't work on any of my (non-101) machines - once I drop the presser foot, it would be at clearly the wrong height.

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Chaly

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Reply with quote  #2 
I have this attachment and just tried it on my Singer 101- top hole.  And everything worked fine.  In the past I have used it without issue on my Singer 15-91 and Singer 201.  

I compared it with my Swiss zigzagger and the stitches look just as good.  There is a bit more tunneling with the older zigzagger so my bobbin thread tension would need to be loosened. I also tried the edge stitch foot attached to the zigzagger and this worked great for stitching on the edge to completely have the thread bound the edge if the stitch length is set small.  The photo of the stitches, from R to L: edge stitch (121706) Swiss zigzagger stitches, varied zigzags (121706), widest zigzags (121706), edge stitching (121706), straight stitch (121706).  The Swiss zigzagger has a bit wider stitch.

Check to be sure the spring on your zigzagger is all intact.  The picture in the manual showed one side and I'm attaching a photo of the opposite side.  If the spring is broke, the lever D won't hold.

I actually like this one better than the newer ones with cams -so big and clunky and never been very useful to me.  The Chadwick one is nice and the Geist one with the cams is also good.

For fun, I tried 12706 on my Singer 48 - it worked but the pressure foot bar would need to be adjusted higher or a much lighter pressure and I didn't want to change my setting - but I think it could be  possible.

Regarding the Singer 101 and fitting attachments - the straight stitch foot is not interchangeable but all my other attachments ,save the hemstitcher, have worked fine on my 101.  I have noticed with my Singer buttonholer, the exact brand, type, and size of needle can be a variable in the results.

Hope you can get it working!
zigzag stitches.jpg  zigzagger back.jpg 

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Cari-in-Oly

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Reply with quote  #3 
Chaly when a zigzag stitch tunnels you loosen the upper tension not the bobbin tension. A proper zig zag stitch takes a bit of the upper thread to the back.

Cari

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Chaly

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Reply with quote  #4 
Cari - good point - for most zigzag work - and especially when using a zigzag machine, the first order of the day to get a good stitch is to loose the top tension.  My results for the attachments needed more loose bobbin tension as well.  The instructions say to loosen up both tensions.  

From my photo you can just see a bit of tunneling on the top side and I didn't mention the bottom tunneling - so I took another picture of the bottom stitches so you can see the tunneling from too tight a bobbin tension - sorry I should have been more clear.  Anyway, what's interesting is that the tension settings were pretty okay for the Swiss attachment but the 121706 need more tension adjustments on the fabric I was using to get a better stitch (left most stitching line is from the Swiss attachment).

stitches back.jpg 

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victrola

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Reply with quote  #5 
Chaly, thank you SO much for your very detailed reply!

Here is a photo of the backside of my 121706 - alas it is upside down, and FYI to anyone looking at this for scale, this is a 1cm grid - but note the spring you mentioned, within the red rectangle. Your spring looks much beefier. Perhaps this is why yours is more reliable at zigging and zagging. At some point I'll check if extra oil helps, or if there is something bent or burred.
121706.jpg

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Chaly

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Reply with quote  #6 
And your bottom spring (top one in your photo) is in quite a different spot than mine.  Maybe try to reposition it as this is the spring part that directly impacts lever D.    Oil too is always a good idea.

ETA:

I should also mention to note the position of the spring on mine when the arm is at the highest point.  When the arm is at the lowest point this spring end should sit nicely in the bend of the part it wraps around - see below photo:

spring.jpg 


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victrola

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Reply with quote  #7 
Quote:
Originally Posted by Chaly
And your bottom spring (top one in your photo) is in quite a different spot than mine.  Maybe try to reposition it as this is the spring part that directly impacts lever D.


Chaly, I now realize that I forgot to reply to your message. Thank you for this. Unfortunately I can't really reposition the spring - I tried but its location is determined by the pin it attaches to on the other side, as you can see from the diagram in the manual in my initial post.

Perhaps it is the added beefiness of your spring compared to mine that makes the difference.

Thanks again for all your help trying to figure this out.
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Chaly

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Reply with quote  #8 
Sorry your issue is not resolved.  These zigzagger are fairly common so maybe you'll run into another one that will be functioning.  
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