TBCleather Report post Posted October 2 I’ve got a Brother LS-2 B-837, I have an issue with the reverse stitch being too short. All the manual says about reverse stitch is that “it’s dependent on the forward stitch length”. So I adjusted the forward stitch length according to the manual. It sews up to 8mm accurately and the reverse more or less works at this length. I tend to stitch around 3-5mm with 207 and 277 bonded nylon, at this length the reverse is almost exactly half the forward length. The machine never came with a reverse lever stop, but has a place for one. I notice that at 8mm it “bumps” when fully depressed as though it’s rubbing against something but i cannot figure out what it is. Is it possible, without the stop, the lever can be depressed so far that it causes the length to shorten instead of match? I cannot find any videos or posts related to this exact machine, it says it was made in Japan by seiko. The casting is almost identical in shape to a cobra class 26, but it’s a flatbed like a class 20, it also has the same stitch length dial and reverse lever position as the class 20. If anyone knows of a video addressing stitch length on a similar machine with a different manufacturer or branding I can work with that or maybe a link to the cobra manuals? Thanks Quote Share this post Link to post Share on other sites
1hp Report post Posted October 2 someone posted this recently. hope it helps. Industrial machine comparison chart.pdf Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted October 2 54 minutes ago, TBCleather said: All the manual says about reverse stitch is that “it’s dependent on the forward stitch length”. So I adjusted the forward stitch length according to the manual. It sews up to 8mm accurately and the reverse more or less works at this length. I tend to stitch around 3-5mm with 207 and 277 bonded nylon, at this length the reverse is almost exactly half the forward length. It could be that the builder expected users to sew short stitches and balanced the forward and reverse for that length. I have a Singer 211g156 that I was able to adjust for 5 to the inch in both directions. It has a push down reverse lever. If I don't press down all the way the reverse is shorter than forward. I currently own 10 industrial sewing machines and only 3 have reverse of any kind. Two of them have levers like yours that I raise to sew backwards. One stays in place and the other is spring loaded and has to be held up. They all match the forward and reverse stitch lengths. One required a metal washer shim on top of the stitch length nacelle and the other is the aforementioned Singer 211. It has a cam that I was able to tweak to match the stitches. Quote Share this post Link to post Share on other sites
TBCleather Report post Posted October 2 1 hour ago, Wizcrafts said: It could be that the builder expected users to sew short stitches and balanced the forward and reverse for that length. I have a Singer 211g156 that I was able to adjust for 5 to the inch in both directions. It has a push down reverse lever. If I don't press down all the way the reverse is shorter than forward. I currently own 10 industrial sewing machines and only 3 have reverse of any kind. Two of them have levers like yours that I raise to sew backwards. One stays in place and the other is spring loaded and has to be held up. They all match the forward and reverse stitch lengths. One required a metal washer shim on top of the stitch length nacelle and the other is the aforementioned Singer 211. It has a cam that I was able to tweak to match the stitches. When I originally got the machine it was balanced. I hit some random piece of what I think was rawhide inside a piece of cheap veg tan a year or so ago (previous owner left some screws a bit loose), It threw a couple things out of whack and after I fixed that, I remember messing around with a cam in the bottom because it was stitching in reverse (when I meant for it to go forward). It was larger with an eccentric lobe or linkage and part of what I think is the safety disconnect. Maybe i adjusted it too far or not far enough? Quote Share this post Link to post Share on other sites
TBCleather Report post Posted October 2 7 hours ago, 1hp said: someone posted this recently. hope it helps. Industrial machine comparison chart.pdf 1.38 MB · 4 downloads That is extremely helpful, thank you Quote Share this post Link to post Share on other sites
shoepatcher Report post Posted October 7 Looking at the comparison chart, none of those machines sew heavier than #207. If you are using 277, it is too heavy for that machine especially if you are trying to sew #277 and in reverse. The clearance is simply not there especially in reverse. Stick with #207 on top and #138 on the bottom. Some of the machines in your list will not sew past #138. glenn Quote Share this post Link to post Share on other sites
