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Old 06-26-2010, 11:10 AM
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Adjusting Servo Motor?

It appears that mine is very sensitive. You barely turn it and the power increases dramatically. Is this normal? Secondly, does the motor have to be adjusted to the thickness of the material you are using? In my case, the head is a Singer 111W153. Not sure about which motor is mounted on the table.

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Old 06-26-2010, 02:34 PM
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It may be normal for your servo motor, but mine are not that way.

No, the motor does not have to be adjusted for the fabric thickness.
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Old 06-27-2010, 07:43 PM
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What kind do you use?
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Old 06-28-2010, 07:34 AM
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Don't know if this will help your situation, but my servo was a little over sensitive as well and tended to accelerate far too fast for my skill level. So I made up a "rev limiter" for the pedal plate. Hopefully it is self explanatory from the pics. Helped me a whole bunch to control my machine.



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Old 06-28-2010, 08:34 AM
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Quote:
Originally Posted by Coodeville
What kind do you use?
There are all kinds of servo motors out there, and they are not all the same. There are huge differences in servo technology. If you skimp on the price you will usually be disappointed. I have two kinds. Two of my machines have Reliable Sewquiet 3000's on them and one machine has a Reliable Sewquiet 4000. As far as I know, they don't make the Sewquiet 3000 any more. That's a shame, 'cuz it has a knob for different speed positions and also a rheostat to adjust from there. I can literally make my sewing machines slowly sew one stitch at a time with the pedal pushed to the max. The Sewquiet 4000 has a position switch like the 3000, with 3 speed settings, but no rheostat. It still seems to be very controllable. The newer 4000's have a 4 position switch with a speed range of 1400 to 4000 RPMs. They also have a laser sensor for the treadle which gives you even more speed control. I do like the fact that it has an overload circuit so that if the machine jams it won't hurt the motor. The 3000's came with two different pulleys, one larger and one smaller pulley depending on what kind of machine you have and what you're sewing. The 4000 came with a 90MM pulley, but a smaller 50MM pulley is available, which would cut the speed of your sewing machine almost in half. If you change the pulley on your motor to a smaller one, it would help you a great deal. You might need a new longer belt depending on how much smaller the pulley is that you change to.

I paid about $180 for the 4000. If you're only paying $100 for a servo, it is going to be a very bare bones motor. Most servos jump a little bit when they start, and then smooth out, so be real careful as you start sewing.
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Old 08-31-2010, 05:10 PM
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servo

I put a bigger pulley on the machine head and that took the jump away.
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Old 08-31-2010, 06:03 PM
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Or a smaller pulley on the motor will do the same thing.
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Old 08-31-2010, 10:21 PM
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Will the 4000 slow down and make one stitch at a time with power like you describe with the 3000?
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Old 08-31-2010, 10:24 PM
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Quote:
Originally Posted by cpg2
Will the 4000 slow down and make one stitch at a time with power like you describe with the 3000?
I was wondering that as well.
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Old 09-01-2010, 06:58 AM
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I don't have the 4000 on a regular machine, I have it on my heavy duty long arm Singer 144. I don't know what it will do on a regular machine, but it won't stitch one at a time on the Singer. My guess is that it won't on a regular machine but will go very, very slow.
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