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I have three Skyrit motors - 2 x 550w, 1 x 750w - and on mine at least there's no output to control what you want to do.

Machines wot I have - Singer 51W59; Singer 331K4; Seiko STH-8BLD; Pfaff 335; CB4500.

Chinese shoe patcher; Singer 201K (old hand crank)

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  • 2 weeks later...
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Posted

Thanks for all the replies, folks. Sorry, have been out of touch for a bit.


mb5: thanks for the manual. It's pretty close to what I have, so I'll download those pics.

Constabulary: thanks for the tip to that website. That looks like the motor I need, except for a problem: It's 110 volt. I need a 240 volt unit. I don't see any servo motors for 240 volt systems. Amazingly, they charge less than $10 to ship it to New Zealand. Might be that it's drop-shipped from China, but I don't know. I'll send them an email and see if they have any 1 hp servo motors that use 240 volts. Thanks.
 

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You at least know the models you could look for. Servo motors come with different voltage you may find the same models with 220V / 240V but keep in mind 220V in the US is 3 phase not single phase as in the EU / NZ or other countries.

~ Keep "OLD CAST IRON" alive - it´s worth it ~

Machines in use: - Singer 111G156 - Singer 307G2 - Singer 29K71 - Singer 212G141 - Singer 45D91 - Singer 132K6 - Singer 108W20 - Singer 51WSV2 - Singer 143W2

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Posted
8 hours ago, Constabulary said:

You at least know the models you could look for. Servo motors come with different voltage you may find the same models with 220V / 240V but keep in mind 220V in the US is 3 phase not single phase as in the EU / NZ or other countries.

We have all three; 110V Single phase, 220V Single phase, and 220V three phase.

Used to be every factory machine was 220V three phase, now everyone want's 110V single phase and the new Efka motors DC1550AB321 and DC1280AB620A only come available in 220V single phase.

Industrial sewing and cutting, parts sales and service, family owned since 1977, Philadelphia, Pennsylvania USA, 215/922.6900 info@keysew.com www.keysew.com

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Posted


Constabulary: Yes, I know what to look for. Thanks for the tips.
Gregg: yes, when I had my saddle shop in New Mexico many years ago, I had Efka servo motors on some of my flatbed machines. They were 220 volt, single phase. Here in NZ it's all 220 volt, and household current is single phase. Industrial stuff can be 3-phase, as well.

And on a completely different subject, why am I not being notified of responses to this thread? (I have it turned on...) Just wondering if there's some forum setting I'm missing somewhere. Thanks.

  • 1 year later...
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Posted (edited)
On 1/26/2019 at 4:08 PM, jegenes said:

Thanks for the tips, guys. I'm familiar with needle positioning machines, as I had a saddle shop for a long time and did a lot of high end production for the fashion industry. I had Pffaf, Adler, Mitsubishi, Singer, and other machines of all sorts, some with servo motors. That was in the US, where parts and service are plentiful (and cheap). In this case, here in New Zealand, there isn't much choice and shipping costs can become a huge factor. I was just trying to see if this old beast could be resurrected. I'll keep chipping away, but am not opposed to just replacing the system with a simple motor and clutch if need be. And you're right, Jeff, it's a circus [grin]. I'm pretty sure I now have it all hooked up correctly, but still now power to the modules. So, I'll make a few calls/emails and if they don't work out, I'll look for a replacement drive system for it. The machine head is in great shape. I was able to get some stitching guides for it, along with prewound bobbins and other goodies, so I'm almost set to go. Even though I do like the servo motors and the air powered foot lifters, I learned the old fashioned way (first hand stitching, then old harness machines and Singer 31-20's, etc), so I'm not afraid of "old school".

Constabulary: The things I'd like it to do are:
      --to lift the foot when I back-pedal the treadle.

      --do reverse stitching and backtacks (right now, it has electronic controls for these, but does have a manual lever for backstitching... I can modify that to work)

I can live without either of these, but it'd be good to know whether a new motor system would provide them. Thanks for that tip

best,   --john

 

 

Any luck? I'm in the same boat with a dead mother board. I am told that for $1300 cdn I can have a new efka and about 4 hours rewiring plug connectors. My tech says keep it original, but I say it just needs to work...without all the programs. No reverse lever and thread trimming are tricky things to have built into a motor. Have you had any luck?

 

James

Edited by Brooksie
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Posted

James:
I ended up getting a servomotor from Aliexpress (around $200, free shipping here to New Zealand). It works fine. It's 750W https://www.aliexpress.com/item/1872320341.html?spm=a2g0s.9042311.0.0.27424c4d53T3WP 


I still don't have an automatic foot lifter or backstitching, but I can live without them. I put a manual knee lifter on it, which is fine. I don't use the auto thread cutter, so that's no big deal for me. The machine is stitching great now.

I wouldn't bother trying to keep your old motor and motherboard. They're basically boat anchors now. The new motors are very small and lightweight, and very powerful. Make sure you get the right pulley(s) for speed reduction, if you need that. I'd say that $1,300 is too much to pay for that, but I might be wrong. The installation of the new servomotor is usually straightforward and simple, with some adjustments, etc. Good luck with it.

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Posted

My Skyrit's are from Lishui and I've been happy with them.

Machines wot I have - Singer 51W59; Singer 331K4; Seiko STH-8BLD; Pfaff 335; CB4500.

Chinese shoe patcher; Singer 201K (old hand crank)

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