I Need To Tell You How Much I Hate The Consew Servo Motor...

[Gregg From Keystone Sewing]

The Consew motor has nothing to do with the Ho Hsing brand. The Consew motors are made in China and are just the same as many other brands of Chinese motors. The Chinese have yet to brake the code on making good servo motors. They have plenty of watt and enough torque in the digital ones, but poor low speed control and no working needle position. (of course some are working as they should, this is general speaking) The Chinese sewing machines on the other hand has become very good. That's why I recommend a good Japanese low priced servo motor, the Ho Hsing G60 (600 watts servo motor with needle position and expand options). Then you will avoid these problems and have a proper support too.

To get any info about the Consew, go to http://www.consew.com/list/machine-stands/servo-motors

Good luck

Tor

Ho Hsing motors are made Taiwan, not Japan, since the early 60s, http://www.hohsing.com/index.php/en/about-us-en/history-en

Quality, support, setup is very good on Ho Hsing motors, and I like working with them when the application, machine and motor are correct.

[MG513]

Ho Hsing motors are made Taiwan, not Japan, since the early 60s, http://www.hohsing.com/index.php/en/about-us-en/history-en

Quality, support, setup is very good on Ho Hsing motors, and I like working with them when the application, machine and motor are correct.

I was gonna call you guys yesterday but you have such weird hours lol. Do you guys sell a piping/roller foot that can attach to a tacsew 563 (juki copy)? Im looking for some feet and i guess proper feed dogs I can put on that wont mark up veg tan leather?? Thanks

[Daniel G]

How do I take off the pulley and where can I find an appropriate smaller replacement pulley?

[Trox]

Call Greg at Keystone (above),  I'm sure he have something. If not try Bob Kowar member name "CowboyBob" Toledo industrial Sewing machines. You start with removing the nut. I do not know this motor, but I'm sure one of the above mentioned dealers do. They will take care of you.

Tor  

[Daniel G]

7 minutes ago, Trox said:

Call Greg at Keystone (above),  I'm sure he have something. If not try Bob Kowar member name "CowboyBob" Toledo industrial Sewing machines. You start with removing the nut. I do not know this motor, but I'm sure one of the above mentioned dealers do. They will take care of you.

Tor  

thanks! I'll give him a buzz in the morning. 

[dikman]

On the inside of the pulley there should be two flats, put a spanner on them to hold the pulley and take off the nut on the front. The pulley should pull off, it has a slotted key-way to locate it on the shaft. Check the shaft diameter, most of them are 15 mm, if so it's a standard size for most motors and pulleys are readily available via ebay.

[Darren Brosowski]

Servo motors come in a huge range of varieties - just as sewing machines do.

I import the Cowboy servo motors and they are great for most machines but they are set for a maximum of 1500RPM at the factory which does not suit every application. With the factory support I can reprogramme them for higher speed.

The ramp up rate of most motors can be changed. Sometimes this is a user function but usually it is a special set up for the factory that the dealer can work you through.

 

 

[Trox]

Hi Darren, why don't you post some pics and give us some facts/specs about their new motor. It's an servo motor without needle position, am I right?  I have only seen poor pictures of it. where to buy and price.

Thanks

Tor

[mikesc]

where to buy and price

I'm presuming that the "where", is from Darren :)..although shipping from Australia to Norway ( or France ) might make us wince a bit ;)

[hackish]

I'm joining in this conversation because I've had a similar experience with servo motors. All the ones I've found are simply chinese re-brands of the same junk. I've opened 1/2 dozen motors from $120-$300USD and they innards are identical. Some of them advertise 500 or 750w yet have exactly the same motor and controller boards inside. They also seem to have fake UL labels on them considering basics of electrical design are not followed (high voltage floating grounds on the synchronizer for example!) In other words they seem to tell you what they think you want to hear.

I disassembled a needle positioner and installed it in my 20U but the Consew CSM1000 does not seem to ramp the speed up and down very nicely so it does not start/stop smoothly and depending on the position sometimes flies past the top/bottom sync and does a double stitch. I also have a CS1001 on my double needle machine and it suffers similar problems. I have not yet had a chance to do the pencil mod inside. At this point I want to buy a servo for my class 7 machine but given all the problems I'm considering buying a non-sewing industrial servo motor driver and programming it to do what I want. It would be interesting to syncrhonize it but I know these little junky controllers would never be able to stop/start a heavy machine with any reliability.

If I had infinite time I'd just design my own controller for the cheap motor kits so they could be setup safetly to do what we want and just plug a USB device in and program it as you like.

[dikman]

I found the same thing with the needle positioner and because I sew very slow decided to remove it. I can control the needle position well enough without it. Interestingly, I can't do the "pencil mod" on mine because the design is different (doesn't have the gradient piece inside). I have  500W and 750W motors, same brand, and at least the 750W is physically bigger on the outside .

[Trox]

Personally I'm happy with my Efka motors and I know who sells them in Germany. However, the motor is not pictured in any of the German dealers Web sites (Sieck.de and Frank Brunnet are both Hightex dealers in Germany). There are a lot of potential buyers here that read reviews on Chinese motors. I like to belive there are progress, they make better product all the time. The problems with today's Chinese servo motors that remains to be solved are speed control and needle position. It's not a problem to produce good solutions, but how to produce them economical. Let us see this new motor, is it any good.

Thanks

Tor   

[hackish]

Wish I had time to play with it. I'm sure I could build a controller but it would take $25,000 in R&D time and $10,000 in up-front production to have 1000 made. I have found a few servo controllers on ebay. Seems you can buy an industrial one for $250. I should order one and see if I could coax it into running one of the motors I have. $375ish still isn't that bad for a good working servo setup.

[gottaknow]

Really decent servos and air motors and control boxes have been used for many years in factories. I know Trox is a fan of the Efka's, and even the older units from the 1980's were butter smooth.  I've taken many out of service in the last few years, but having a unit survive factory use for 30 years is pretty amazing. The "hobby" servos and controllers are actually quite pathetic comparatively speaking, thus everyone wants to mod them and reinvent the wheel. The wheel already exists if you want to pay the price.  I know some of the cheaper ones can serve a hobbyist quite well. But the price point is good for hobbyists. I trust guys like Wiz to know the good from the bad because he's dealt with them.  We don't use them in factories because they get killed in short order. In contrast, I have Singer and Amco clutch motors from the 70's that have never needed a clutch replaced and old Efka units that are still going strong without adjustment. It's too bad there isn't something in between that was really smooth and strong but at a better price, perhaps not a big enough market?

Regards, Eric 

[Trox]

Thanks for the insight Eric, I believe there are some pretty reasonable priced options out there. Like the Hohsing G60 needle position motor, the price in Europe is under 200 US$. There are also other good Hohsing motors under 450 $. The G 60 is 600W with needle position and speed control that works as it should do. Hohsing are a professional brand, and have motors that can compare to Efka, I never heard anything but good things about them. I have several friends that use them, you can't get them to buy anything else.

Tor

[dikman]

One of my machines came with a very old Singer clutch motor, it looks a bit the worse for wear but still works well - unfortunately, I lack the skill to control it, even with a speed reducer!! As Eric said most of these Chinese servos are perfectly adequate (and affordable) for we hobbyists. While it would be nice to have a high-end servo, needing three meant it was not even a consideration. I'm more than happy with my $200 Chinese servos, they're perfectly adequate for my needs.

[Uwe]

I just a got a new modular $200 servo motor from SewPro which is 1100W strong and starts at a low 100 RPM. I have high hopes for it, but haven't installed it yet for testing. I'll report back this coming week after some testing.

[Wizcrafts]

Since you asked, I can already feather a clutch motor down to 1 stitch per second, using the standard control arm and proper adjustment of the slack bolt and return spring. However, a long extension arm would make it easier on the ankle to hold it at slow speed.

[MADMAX22]

Cecharo has a bunch of good videos but is also very experienced so he may be making it look  easy. Plus remember getting started in upholstery leather is different then pounding thru vegtan or such so keep that in mind. 

 

Reminds me of the old adage for hopped up street cars, 

Fast/Reliable/Cheap pick two. Seems it works for servo motors as well. 

Edited October 30, 2016 by MADMAX22

[Uwe]

1 hour ago, MADMAX22 said:

Cecharo has a bunch of good videos but is also very experienced so he may be making it look  easy

I think you mean Cechaflo on Youtube. He's a master of the manual step backwards. It seems he only uses his machine's reverse lever when he doesn't care where the stitches go. 

[MADMAX22]

15 minutes ago, Uwe said:

I think you mean Cechaflo on Youtube. He's a master of the manual step backwards. It seems he only uses his machine's reverse lever when he doesn't care where the stitches go. 

Yeah thats who I meant. I watched a bunch of his videos to help learn how to upholster motorcycle seats. He doesnt talk much but shows how to do things very well and is quick to answer questions that are posted to his videos.

[Uwe]

In defense of Consew servo motors, I recently put together a $110 Consew Premier CSM550 motor with a 50mm pulley and a 3:1 speed reducer to power my Consew 225. Below is a video of this combo sewing 6.2mm (15oz) veg tan leather using size 138 thread and a size 23 needle (I misspoke in the video). To me, this cheapest of servo motors plus a speed reducer (that cost more than the motor) leaves little to be desired in terms of consistent low speed control and punching power. I'd love to see somebody do this with a clutch motor.

 

Edited October 31, 2016 by Uwe

[Wizcrafts]

This reminds me of the 125 pound Adler 204-374 flat bed walking foot machine that I bought privately in 2010. It had a 1/2 HP clutch motor with a 2" pulley feeding a 3:1 speed reducer. I could easily feather it down to 1 stitch every few seconds. The top speed was all of 2.5 stitches per second. The beast could sew a solid 1/2 inch of leather with #346 thread. I traded it off for a Union Lockstitch Machine.

[RockyAussie]

10 hours ago, Uwe said:

In defense of Consew servo motors, I recently put together a $110 Consew Premier CSM550 motor with a 50mm pulley and a 3:1 speed reducer to power my Consew 225. Below is a video of this combo sewing 6.2mm (15oz) veg tan leather using size 138 thread and a size 23 needle (I misspoke in the video). To me, this cheapest of servo motors plus a speed reducer (that cost more than the motor) leaves little to be desired in terms of consistent low speed control and punching power. I'd love to see somebody do this with a clutch motor.

 

That is a very good useful video Uwe. I have now bookmarked it.Thanks again for sharing.

[MADMAX22]

13 hours ago, Sticks said:

Hi there,

 so do you mean this method will not produce the necessary torque to go through vegtan .?

I dont know to be honest, was just commenting on the fact that he was using 2-2.5oz upholstery leather doubled up on the seam. When you start sewing vegtan the torque goes up considerably for that first stitch. It will probably help albiet not as much as a servo motor. It is a cheap and easy mod so worth giving it a shot to see how it works for ya. 

Plus practice, practice alot. Thats how guys like Wiz can chug along with a clutch motor (with these other mods) and maintain control. Now if you have a clutch motor setup for upholstery with a big pulley on it and a small one on the sewing machine its going to be hard to handle at real slow speeds but that isnt what it was designed for. Now a clutch motor with this mod plus a small pulley on it and a speed reducer or large pulley on the machine and a good clutch will help control considerably.