Melonie

Tension issues?

6 posts in this topic

Today I switched from my usual #138 thread to #92. I changed out the needle and triple checked my threading but for some reason the bottom thread keeps coming up. I've adjusted the top tension both ways but I can't seem to get it right. Any suggestions?? 

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Try adjusting the bobbin tension.

The smaller 92 will may slip past the settings that you've always used for the larger 138 thread

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Does thread make a difference? 90% of my sewing with my Cobra 4 is using black or brown 277/207 bonded nylon. When I switch to white 277/207 that I bought from the Leather Factory the bobbin thread comes to the top. I can decrease top tension and increase bobbin tension but no luck. I can then replace white with brown 277/207 and it sews perfectly.

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5 hours ago, bushpilotmexico said:

Does thread make a difference? 90% of my sewing with my Cobra 4 is using black or brown 277/207 bonded nylon. When I switch to white 277/207 that I bought from the Leather Factory the bobbin thread comes to the top. I can decrease top tension and increase bobbin tension but no luck. I can then replace white with brown 277/207 and it sews perfectly.

It does sometimes seem to make a difference.   I have 2 reels of thread, bought at the same time,  both are marked the same, but one of them always needs a bit fiddling with the tension to get it right,    The only obvious difference are the colours.

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11 hours ago, bushpilotmexico said:

Does thread make a difference? 90% of my sewing with my Cobra 4 is using black or brown 277/207 bonded nylon. When I switch to white 277/207 that I bought from the Leather Factory the bobbin thread comes to the top. I can decrease top tension and increase bobbin tension but no luck. I can then replace white with brown 277/207 and it sews perfectly.

Definitely makes a difference.  One supplier's 277 is NOT necessarily the same size as another's 277.  I am currently using 2 spools of white 277 from different suppliers. One is noticeably thicker than the other.  Both are from reputable suppliers, but I can't run the lighter weight 277 on the top side of my Cowboy 4500, so I use it for winding bobbins. It doesn't cause an issue there.  Even the same brand but different colors does make a difference.  In my experience it's the colored threads that are more likely to cause issues, white being the least likely.  Brown seems to be the worst out of the three colors I use:  white, black, brown.

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7 hours ago, LumpenDoodle2 said:

It does sometimes seem to make a difference.   I have 2 reels of thread, bought at the same time,  both are marked the same, but one of them always needs a bit fiddling with the tension to get it right,    The only obvious difference are the colours.

Yes, the new thread I'm trying was bought at the same time, same suppliers and brand, but this one is a cream color and obviously a different size. My other one was brown. 

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