Servo Motor: DIY Smoother Speed Control MOD
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- Опубліковано 9 лют 2025
- You upgraded your sewing machine to the latest and greatest servo motor and found that your new motor is hard to control unless you set the top speed to a low setting. Then when you need or want to go fast you have to reach under the table and set the motor to a faster speed and then change the speed again to sew critical areas.
This MOD allows you to have both slow speed control and high speed at the same time without needing to access the digital control panel of the servo motor.
You can also customize the ramp time between slow and fast speed and set it to your sewing skill. Those new to sewing will most likely want a longer smoother ramp time between slow and fast speed, whereas someone that is used to sewing with a clutch motor will probably want a faster ramp time.
All this can be done with a small piece of paper, a pencil, some tape, and a little experimentation (patience).
If you have questions after watching the video more info and photos of how to do the MOD are available on our website.
www.swflholster....
Servo Motor: Updated Speed Mod
• Servo Motor: Updated S...
Disclaimer: Even though this is a very simple MOD if you feel uncomfortable or not exactly sure about what you are doing I highly recommend you find help. You assume all responsibility for any problems or damages you may have resulting from these instructions. I cannot and will not be responsible for you or your equipment.
Website: www.SWFLholster...
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People like you make You Tube a valuable resource for us all. Thanks a ton. I am buying a servo and making the same adjustments you have recommended. Kudos.
Just gave this a go with my new Enduro Elite SM1050-2PF (which has 2 LEDs & 2 shutters, though the left one seems to have no effect) on my Consew P1206RB. I printed a few smooth gradients of various steps/intensity on doubled-up regular paper, and the 3rd try hit the mark, smooth even ramp-up & not mushy, WAY better than the stock setup. It's a whole different build BUT your videos got me through it. Also put a 40mm pulley in place of the stock 100mm AND will enlarge the hand-pulley later. THANKS, I owe you a beer! UPDATE: I created a short white to black gradient that was about 1/4" of change, then converted it to a mezzotint fine dot pattern (Adobe Illustrator) printed at highest quality on standard inkjet paper, trimmed & taped it down, seems perfect with a lot of mid-range. I also bolted on a 4" x 5/8" steel mending bar to extend the throttle arm out about 3.5" (longer arm = more control). I got the Endro for $40 on eBay, (close-out or damaged packaging), but a crazy deal, as it seems Enduro has ceased operations for these Elite & Pro servo motors? I can send you a PDF, just email me asking for the Enduro gradient, bill at bthrash dot com.
This mod has turned my brother ls2 b837 (running consew 1000 motor) into a an absolute animal! Thanks for making such a thorough tutorial!
Very quality and thorough DIY/mod video. You put a great amount of time making this, thank you for your effort. Very helpful.
Thanks for this vid. I bought a similar motor I intend to use on my pfaff and diy lathe. My choice of motors was based on the info you provided. Can't wait to try it.
Looks great! One might be able to print an optical gradient on transparency film, which would lessen the transition effect based on thickness of the paper .
My absolute thanks for posting this....Much better control!!!
couldn't be any CLEARER.......awesome video
Thank you so much for making the video. Looks to be an incredible improvement. I have a Singer 111WSV71 with a clutch motor and have been considering a Servo w/ speed control or the MCSCR system from sailrite. You just saved me $500 -- thanks!!
Just now running across this.... Thank you for sharing this info! Do you know if a needle position sensor is supported by the servo motor you've modified or not?
Would have been nice had you spent less time sewing, which we've seen a million times, and more time creating the lines on the paper gradient. Does white slow it down, or does black?
Did I miss something, what modification was done
I have 2 of these. Is there any way to turn off the position sensor?
Very helpful!!! Thank you! Btw how come your led display has a "loading" effect?? Mine only says "Pd"
What's happening is that the paper is acting as a low pass filter of the light signal to the sensor. Plainly put, the sensor is calculating how much red light is entering the sensor and sending that signal back. When the black plastic blade moves, it simply blocks the light as it passes in front of the LED. Putting the paper on blade creates a region where the amount of red light is dimmed before getting to the black blade which blocks it completely. The reason that the motor runs faster as the paper is nearer to the LED is that the brightness of the LED is higher closer to it, and more light passes through the paper to the sensor.
The sewing machine is a Japanese made Seiko STH-8BLD-3 walking foot machine, and the servo motor is an Enduro Pro SM600-1
Cheers!
So why no use thin thermo plastic that has more body than paper so you can create the right amount of curve that wont ever change?
You may want to watch the latest servo update video. Basically, with the proper slope angle on the light blocker blade there is no need for post-it notes or gradients.
This latest revision is much better because it retains the full RPM range of the servo, whereas the original mod sacrificed top speed.
Check out the Recent Uploads section for the video, and I'll also post a link to the video in the description above.
The video title is: Servo Motor: Updated Speed Mod
I have a Juki DNU 1541 with a servo motor that is not digital. I cannot sew slow. I am new to industrial sewing machines and want to be able to sew slow and controlled. I am making purses and bags with leather and faux leather. i love my Juki and did a lot of research before I bought it, but I need to have more control. Any suggestions? Thanks.
I am shoping for a servo motor for a Juki LU562 I just bought and if You don't mind
can you please tell me if these Enduro servos are good.
My choice at present is the Reliable Sew Quiet 6000SM but reading on the Enduro
specs I like the specs,more powerful,but not users review anywhere to digest.
Thanks for this video,sure is interesting and helpfull.
I have a question. I had a quiet sew 4000 that went bad now a 5000 but I notice this problem you stating will this work on the reliable quiet sew 5000 its too quick to start to sew
I see this vid is now 5 years old but.. hopefully someone might stumble on it and see this question.. I have a techsew 810 with the techsew smart servo motor... can I do this to that? I feel like even on its slowest speed setting and slowest startup speed setting, it still starts up too abruptly. I am a beginner in every sense of the word, no doubt, so looking for a little extra cushion as I learn.
Hi Swaz, I am a beginner too and my servo is still way to fast for me. I'm going to look at doing this to my machine today. How have you gone with your machine?
This video helped me a lot, unfortunately i can't apply this mod to my controller because the sensor is not optical but magnetic hall effect but the controller behavior and operation seems the same; i think i'm going to make a pulley reduction system but i really need somebody who had this controller or some other similar like mine to help me and tell me how the p1 parameter works because mine is supposed to control the minimum speed value but no matter how i set it from 0 to 9 i don't see any difference, and my controller still in guarantee so i need to know if it's faulty or not asap !!! thank you ! :)
Ok i've got the manual and no, this is not the same chip or controlling language of my controller... thank you anyway, you described my problem completely except my solution won't be this one :)
No gradient= always slow, worked out good for me as a beginner with a singer 211 (former original clutch motor)
Wonderful Video, thank you so much!
what is the model of you machine?
Would any one please help me to or guide me to adjust my number of stitches on my singer 241-13
It’s seems Like the newer motors by Consew etc are a lot quieter
Hi Linda, to get the speed control mentioned in this video you will have to replace your servo motor with a new servo motor that has digital speed control. Then you would need to apply the modification that is explained in this video.
Give Leather Machine Company a call (866-962-9880) and talk to David or Steve about servo motors. They are the only company that I know of that does the speed control modification in house. I am sure they would be happy to help you. Good luck! :)
Hi, thanks for posting this video! I wanted to give you my feeback- I am using a Juki DNU-1541 with a Consew CS1000 servo motor. This motor always starts at full speed, then with precise and practiced move you can pull it down to the low speed sometimes, but it sometimes surges and screws up corners on items I am sewing. i typically do leather garments, sheaths, bags, etc, usually under 3/8". If I set the "low speed" setting to 9, slowest, it always has a paused start, sure, then it either stalls or goes full speed. So, I have to start it with the pulley by hand. I took my control lever cover off, and found that the optical arm lever is just black- no gradient, so of course it is either off or on. I tried pencil gradient- and my optical sensor would not read it at all no matter how dark i colored it. Sharpie worked, but it was too hard to get a gradient. i printed out several gradients I did in photoshop, and found the right one, I taped it to the edge of my arm- if I taped it over, it sensed the bulk of the arm, which is really thick, and then either was on or off, no slow start. So on the edge, I set it up to go slow starts with good control and now it works 100% better! I never need any speeds over 500rpm unless I am doing a long stretch on a seat, so I have it set at 400 on the rpm control, now it starts super slow, and goes to 400 when I need it. I am still going to work on the pulley setup so that I can set the motor up to run a higher speed so it doesn't stall out, while still giving me the slow speed I need. Thanks!
THANKS ALOT WORKS PERFECT
HI LINDA, I TOO HAVE THE JUKI 1541 AND NOT ONLY DID I HAVE THE SAME PROBLEM I AM UNABLE TO USE MY FEET FOR SPEED AND NEEDLE CONTROL AS I AM PARALYZED AND MUST USE MY RIGHT ARM AND R. HAND FOR THAT. AS FAR AS SPEED CONTROL I AM USING A REDUCING PULLEY AND A HEAVY[CAST IRON] FLYWHEEL ALONG WITH THE ''LINK'' BELT AS SHOWN IN THIS VIDEO. NOW MY CONTROLS ARE SET UP WITH WIRES AND PULLEYS AND YOU WONT NEED THAT BUT YOU SHOULD FIND THESE MODS WORK FANTASTIC. JP.
love it
No way( I disassembled my pedal controller and found magnet instead of optical sensor...
first 5:45 of total rambling & nonsense. the rest of the video was great.
No man, it's super important. If you're into setting these motors correctly you sure should listen.
Put some oil on that hook. Sounds dry as a bone.
Way to much talking, get to the point sooner. 25% of video wasted.
Bro, you talk too much. Just show us.
talks more bull than actually showing anything. Must be lonely