Members dikman Posted January 28, 2016 Members Report Posted January 28, 2016 I'll have to ask you chaps, 'cos I'm stumped. My 211G166 has started misbehaving, and is forming loops (of the top thread) on the bottom. (#69 thread, size 18 needle, white on top brown in bobbin). It will stitch ok for 2, 3, 4, 6" and then start making loops. I've played with tension settings on the top and bottom threads, but it didn't help. I stripped and cleaned the thread tensioner and the takeup spring, all appears to be working as it should. I increased the tension and travel on the takeup spring, but it still happens. Seems to me that if the takeup spring is the problem then it should happen all the time. I tried a bigger needle (size 22) but it still happens. Not a good day, I switched to the Pfaff and now that's decided to start being stupid! Any ideas welcome. Quote Machines wot I have - Singer 51W59; Singer 331K4; Seiko STH-8BLD; Pfaff 335; CB4500. Chinese shoe patcher; Singer 201K (old hand crank)
Members Constabulary Posted January 28, 2016 Members Report Posted January 28, 2016 Just a guess but if that is on top I´d say thread popped out of the tension discs. You probably have to alter the angle the thread goes through the tensions discs. The thread guide is a bit odd on the 211 (at least the few I have seen) - you have to put the thread guide in an correct angle. Sometimes the angle is not flat enough. Post a picture of your tension unit please. Quote ~ Keep "OLD CAST IRON" alive - it´s worth it ~ Machines in use: - Singer 111G156 - Singer 307G2 - Singer 29K71 - Singer 212G141 - Singer 45D91 - Singer 132K6 - Singer 108W20 - Singer 51WSV2 - Singer 143W2
Members dikman Posted January 28, 2016 Author Members Report Posted January 28, 2016 The loops are on the bottom. While it's stitching I've watched the thread path and it's definitely not popping out anywhere. This is why I'm puzzled, it's as if the top thread is getting some excess slack and it's pushing through the leather. I can tell by the sound when it's happening and the takeup spring stops working because there's too much slack building up after the tension disc. But why does it happen after it's already sewn quite a few stitches? Quote Machines wot I have - Singer 51W59; Singer 331K4; Seiko STH-8BLD; Pfaff 335; CB4500. Chinese shoe patcher; Singer 201K (old hand crank)
Members Constabulary Posted January 28, 2016 Members Report Posted January 28, 2016 srry - I was on the wrong track - when top thread pop out of the tension discs you have loops on the botton not on top (top tension lost bottom tension higher in relation). Well thats the only explanation I have. Please post a pictures of your tension unit. The angle of the thread really matters - no joke. Quote ~ Keep "OLD CAST IRON" alive - it´s worth it ~ Machines in use: - Singer 111G156 - Singer 307G2 - Singer 29K71 - Singer 212G141 - Singer 45D91 - Singer 132K6 - Singer 108W20 - Singer 51WSV2 - Singer 143W2
Members thunter9 Posted January 28, 2016 Members Report Posted January 28, 2016 can only be one of two things popped out from under the tension spring or the lint has built up under the tension spring so you don't get the tension you need . this needs to cleaned out now and then. and some times some thing get gummed up inside the bobbin and that needs cleaning Quote
Members thunter9 Posted January 28, 2016 Members Report Posted January 28, 2016 all I'm saying is take the bobbin spring out remove the screw check and clean the spring replace all and adj tension. do the same on the top remove the knob the spring and the plate,make sure its all clean , put it back together adj you tension ; with the presser foot down make sure the tensions seems to be the same . now with some scrap fine adj your tension and I hope that will do it. I might be wrong but that's about all there is . the timings not off .its making a stich. just no tension Quote
Moderator Wizcrafts Posted January 28, 2016 Moderator Report Posted January 28, 2016 There's a third and fourth possibility. 3: The thread is too well bonded onto the spool in some places but not others. As you sew the tension changes as the thread leaves the spool. 4: There is a starting thread stub sticking out of the bobbin that interferes with the smooth flow of thread off the bobbin. Quote Posted IMHO, by Wiz My current crop of sewing machines: Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.
Members thunter9 Posted January 28, 2016 Members Report Posted January 28, 2016 yea could be that always check to see that your thread spool isn't locked up Quote
Members dikman Posted January 28, 2016 Author Members Report Posted January 28, 2016 I've already stripped and cleaned the tension assembly and had the bobbin out to check that area. Last night it occurred to me to that the only thing different is that I'd changed the thread I was using to a different colour. The one I grabbed was an old, part-spool that came with one of the machines and the thread is a little uneven on the spool in places. I didn't think it would make any difference, but from what Wiz said that may be the problem. Once I've re-assembled everything I'll change to a clean spool. Quote Machines wot I have - Singer 51W59; Singer 331K4; Seiko STH-8BLD; Pfaff 335; CB4500. Chinese shoe patcher; Singer 201K (old hand crank)
Members TinkerTailor Posted January 28, 2016 Members Report Posted January 28, 2016 I've already stripped and cleaned the tension assembly and had the bobbin out to check that area. Last night it occurred to me to that the only thing different is that I'd changed the thread I was using to a different colour. The one I grabbed was an old, part-spool that came with one of the machines and the thread is a little uneven on the spool in places. I didn't think it would make any difference, but from what Wiz said that may be the problem. Once I've re-assembled everything I'll change to a clean spool. If that does not work, throw it out the window...... Quote "If nobody shares what they know, we will eventually all know nothing." "There is no adventure in letting fear and common sense be your guide"
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