Servo motor

[Shot]

First time posting, I just bought a juki lu-563. I want to put a servo motor on it.

I have searched, but haven't found the answer I am looking for. Or maybe didn't understand it. 

I am looking for a servo motor that has good slow speed control and a needle position sensor. 

I have read the issues with the motors not starting on the low settings.

What is the current go to for a great product?

Thanks 

Edited June 12, 2019 by Shot

[Wizcrafts]

Forget the position sensor unless you want to sew fast and stop fast. If you buy a servo motor like this one, which already has a very small pulley, you can feather the pedal to sew at about 1.5 stitches per second. It is easy to stop it on a dime from that speed. This type of motor has brushes and does have a power drop off when you turn the speed limiter pot or switch all the way down. Turning it just above the starting speed regains the lost torque.

The knob on this motor limits the top speed. Some people add a speed reducer setup between the motor and machine. That allows for extremely slow sewing and magnifies the torque by the gear ratio of all four pulleys (motor to large reducer, small reducer pulley to machine).

There are new v-belts required when changing from a clutch to a servo, plus when adding a reducer into the mix. I would try it direectly from the servo motor to the machine pulley. Just make sure that you buy a servo with a 50mm pulley. I use these motors on most of my machines.

[keithski122]

I love having a needle positioner.I don't sew fast but its great knowing the needle will stop in the down position (slightly raising), great for 90 degree turns knowing it won't skip the stitch on the corner.Used with the knee lift I can make curves or sharp turns without material slipping or stitches skipping.My machine is a 563 used for car upholstery so used on material from vinyl to leather to carpet.I don't have a need for a speed reducer, jack motor with speed limited to 1000.

Edited June 12, 2019 by keithski122

[Shot]

Thanks for your replies, I am brand-new at this. So trying to learn 

Edited June 12, 2019 by Shot

[jrjr2u]

I just went through this exact thing. See my thread here and what I landed on

 

Edited June 12, 2019 by jrjr2u

[Pintodeluxe]

I have a 563, and added the Family / Rex type servo Wizcraft linked to above.  Mine uses a 45mm pulley and it worked just fine that way.  Then I added a box-style speed reducer, and it can sew ridiculously slow or normal speed.  The speed reducer was almost overkill, but it's nice to have punching power on thick seams and intersections.  I don't have the needle positioner, and really don't think I need one (with or without the speed reducer).  

Good luck and happy hunting!

[dikman]

My first servo came with a needle positioner (because it seemed like a good idea). I used it once and took it off! As Wiz said, not needed for slow speed sewing. They also don't generally work if you fit a speed reducer or replace the handwheel with a larger pulley.

[Hockeymender]

I have needle positioners on all my servos and I wouldn’t be without them. Doing the slow, precise sewing that I do it is invaluable in keeping everything exactly in position as I work around fingers and thumbs. There is quite a bit of realignment that I’m constantly doing ahead of the needle and it’s necessary that the needle stop in the down position while that happens. 

I also have a speed reducer on one of my machines and I don’t have any issues with the synchronizer playing nice with the speed reducer.  

Just my two cents. 

[Sonydaze]

I have positioners on most of my machines.  I wouldn't want to be without them. I wish my even 441 clone had one... that may change.

[dikman]

Horses for courses, as they say , just didn't work for me. I was aware that someone got a speed reducer working with a positioner, I just couldn't remember who, but I think that is an exception as there have been a few who couldn't get it to work (including me). I wouldn't like to just assume it will work with any servo.