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Old 11-15-2007, 08:28 AM
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stitch length and machine speed?

Hello All,

I've been lurking here for some time know and have gleaned many answers to questions I didn't even know I had. You all inspired me to go out and buy an industrial machine to do my projects on. I've always worked on an old kenmore home unit and ended up fighting my projects (boat/auto/golf cart) into submission. The commercial unit, a consew 206RB-1 is soooooo.....nice, but I do have one question about it. As I increase in speed I decrease in stich length. Is this due to a worn feed dog/needle plate/foot or is this normal? Other than that the machine runs great, but I am going to reduce the pulley size per Horvath, because it keeps trying to eat my thumb..ouch!

Any thoughts would be great, and Thanks for a great site with good folks.

Echo off!

P.S. My current project is the seats in my 86 m1009 CUCV (a military blazer)

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Old 11-15-2007, 04:23 PM
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Hey, Echo

The stitch length should remain the same regardless of speed ... but I don't know what's causing yours to close up. I'm sure Dan will chime in with the answer.

Congratulations on getting your new machine!
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Old 11-15-2007, 09:12 PM
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How old is this machine? Alan is right, it doesn't make any difference how fast you go, the stitch length should stay the same because it's set mechanically. Does the machine do this with all of your sewing, or just some of it? I would take it to a pro and have it gone over completely. My guess would be the feed dog is worn and the fabric is not being pulled through the machine correctly as you speed up.
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Old 11-16-2007, 07:33 AM
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It seems to be more noticable with multiple layers. I changed the pulley last night and that seemed to help in all areas (2 1/2"). My guess is that the machine was made in the 70's. If I had to guess I would say the work is slipping during high speed and not pulling through like it should. I saw on another thread they were talking about sharpening a new feed dog, can you just sharpen the worn one if that is the case? My feed dog has a shine to it but not noticably worn down.
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Old 11-16-2007, 08:33 AM
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I'm wondering ... could it be that the presser foot needs to be adjusted? Maybe it isn't pressing down with enough pressure?
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Old 11-16-2007, 08:46 AM
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You may be on to something Alan. The machine might have been set up for a specific application and needs re-adjustment. Sharpening the feed dog would not help much if it is worn down so far that it is affecting the feeding of the fabric. Replacing the feed dog would make more sense.
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Old 11-16-2007, 02:13 PM
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I didn't know that the presser foot had an adjustment! Is this an operator adjustment or a mechanic adjustment? Iwill consult the manual tonight but I don't recall it being covered.
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Old 11-16-2007, 02:30 PM
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Yes, it's an operator adjustment for different thicknesses of fabric. It's in the manual. Here is the online manual from Consew for your machine: http://consew.marginspluslive.com/im...06rb5instr.pdf

You can adjust the height of the feed dog also, so check the manual for that.
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Old 11-19-2007, 08:09 AM
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Thanks Dan,

What a valuable resource, the manual I got with the machine is not that detailed. Now I can check everything! Thanks again Dan and Horvath your input has been great. This site is one of the best resources I have found in a long time. Thanks again and I'll let you know how things turn out.

Echo off!
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Old 11-19-2007, 08:16 AM
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You're welcome. I'm assuming that you bought this machine used, and my best advice is still to take it to a pro to have it gone over completely. The next best advice is to throw away any thread you got with the machine and buy new. Good luck.
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Old 11-26-2007, 08:25 AM
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Update:

Ordered a tune up kit from cutsewservice com. It included a needle plate, feed dog, bobbin case, 10 bobbins and a new set of presser feet (24.95). Problem solved. Must have been the feed dog, didn't notice how bad the old one was worn until I compared it to the new one, big differance. Also took Dan's advice from another thread and ordered the right side upturned toe foot (19.95), haven't used it yet but I can see how it gets close to edges, I'm sure I will be using it often.

Thank you all for the input!
Echo Off!
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Old 11-26-2007, 11:56 AM
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Super! Glad we could help.
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