Cloth washer under bobbin

[Silky]

My 211G had some remnants of washers under the bobbin. 2 thin ones, IIRC. The 111W has none which also makes it difficult to get the bobbin out as it sits below the edge of the case.

Is there anything critical regarding the fabric type / thickness of the OEM washer ? Is it something I should get from a supplier ? or just cut some out of ? ? ? ? ? material ?

I think I saw somewhere where the washer acts a a sort of drag brake to keep the bobbin from coasting forward when all other motion is stopped abruptly. Thickness, friction, oil and the smoothness of the bobbin surface would all contribute to the lower thread tension as well ... I'm guessing.

I appreciate any input, thanks.

[Wizcrafts]

You can buy an anti-backlash spring and drop it into the bobbin basket. It raises the bobbins and prevents bobbin rotation run-on after sewing at high speed and stopping quickly.

[Silky]

Yeay, I'll assume that should also lift the bobbin a bit when opening the lever so I can better get ahold of it !

Thanks

[Wizcrafts]

4 hours ago, Silky said:

Yeay, I'll assume that should also lift the bobbin a bit when opening the lever so I can better get ahold of it !

Thanks

I just keep a small precision screwdriver on the end of the table and use it to pry the bobbin out on one side.

[Bert51]

Silky I don't know if this would help, but I got some bobbins that where not the correct for the the number they where listed as, but they fitted the case so I used them, every now and then I would get the bobbin thread breaking for what I thought was no reason, then I realised that it was breaking after a bit of a fast run, I found I was getting over run from these bobbins, I tried a few things and I could not find backlash spring for this bobbin, but I ended up using some of the BBQ plate plastic like paper, it gave me a little bit of pressure but allowed it to slip okay.

Bert

Edited April 27, 2020 by Bert51

[Silky]

11 hours ago, Wizcrafts said:

I just keep a small precision screwdriver on the end of the table and use it to pry the bobbin out on one side.

That is what I am doing with the 111W. Also have a small shirt pocket magnet that works OK.

Thanks Wiz

Hi Bert, I also have a bag of prewounds that are thicker than the metal bobbins, There is no room for anything in the case with them.

The overrun doesn't bother me, just wondering if the original washer (or spring) is actually necessary after slowing these machines down for leather work. I guess its original, and only purpose was to create a little drag .... similar to the felt washer under the spool on my little 99 domestic. The overrun there can loop around the post and  ...eeeeek. I use a washer cut from that soft, spongy checkerboard material commonly used for kitchen drawer liners on it. Works perfectly.

Thanks again Gents,

[Bert51]

I have not had great luck with prewounds lately, I don't know if it was a couple dodgy bobbins or what, been winding them myself recently.

Bert.

[Silky]

54 minutes ago, Bert51 said:

I have not had great luck with prewounds lately, I don't know if it was a couple dodgy bobbins or what, been winding them myself recently.

Bert.

The ones I have came with the machine, so I just use them for play, practice and plan to use them to make mock-ups for some upcoming outdoor fabric items.

They are quite old (nylon) and some are too tight on the post. I just chuck those in the scrap bin. Probably not worth the time to bore them out. Should check though, might just be a burr in there. They are quite handy ... till they're gone.

Thanks Bert.

[Bert51]

The first lot of prewound bobbins I brought was from ebay, yes even I make mistakes, and I think the box I received said they suit my Juki 555-5, but I also had two other sizes in the box, some fitted the Singer 31K47 and I still don't know what the rest fit.

The nylon bobbins in the Juki suffer from over runs, so I now turn the speed down to use them. Yes they are handy to have, but once they start to mess up, their in the bin.

Bert.