Constabulary

Has some one experiences with this old JUKI type servo motor? Is there a manual? I haven´t found anything online. I think this is a ACNP-M002 motor with D1CHCS control box.

Some one looked for a parameter list for a Servo - can´t find the thread but this is a list I found in another forum just recently. Unknown brand but maybe helpful for one or another:

I´m not a 441 type machine user but always interested in developments... Have you tried the "needle feed only" throat pates (w/o feed dog) for the 441 type machines? Wasn´t there a video just recently? How would they perform in your business?

Thats thingy on the face plate top - if your machine has no tension release I think you can buy one for the GA5-1 type machines. Not sure if the threading is the same but thats should not be an issue - that at least is the most economic solution IMO. https://www.ebay.com/itm/143447409105 Maybe you need a heavier spring

not sure what you mean.... EDIT: had a foot on the line - sorry - sure now I got you.

often times the needle plates of the plain industrial straight stitcher are the same (Singer standard I´d say) so maybe there are other models that use the same needle plate. Not necessarily Pfaff but many others do. Not a really rare par I´d say and available everywhere. DDL Needle Plates On Ebay Or are you looking for something special?

Hoshing servos are another option for "better servos". Not sure what kind of brand RELIABLE is but they at least look quite good but don´t know how well they perform. https://reliablecorporation.com/collections/motors I´m using JACK servos and I´m quite please but they are not high end either but they work well for me. And JACK is a known manufacturer of a wide range of sewing machines (at least). I would buy one again.

Last night something odd happened on my JACK 563 Servo. I wanted to increase the RPM but seems I pressed and odd button combination (I guess - don´t know) by mistake (fingers too thick I guess ) And I got an E5 Error (E5 = needle positioner ON but not sensor installed). Usually not a big issue - there are several YT videos on the E5 error and the poor manual describes it as well. Unfortunately nothing worked. The E5 was on the display permanently no matter what I tried. I unplugged the 2 plugs on the control box, turned the motor off and on - I tried everything even all kind of button combinations. Even factory reset was not possible cause the E5 was on the display all the time - no way to remove it. I already feared that the board is bad and I have to order a new one from College Sewing (they have 1 remaining). I finally did this and it worked: I turned the motor off, pressed down the foot pedal and turned the motor on, motor starts as normal and I was able to turn off the needle positioner (from N1 to N0), then released the foot pedal. Now the motor works again as normal - no issues anymore. Don´t ask me what I did wrong and don´t ask me why pressing the foot pedal came to my mind - I just tried it and it worked. Really - no clue - it just worked. This was the 1st motor failure in 7 years - fingers crossed! Maybe this works for other issues with the JACK servo as well - or maybe it works for other servo brands too - I don´t know. I just wanted to share this as a possible option for removing motor errors. It may work or not - in my case it worked.

EFKA Servos are high end and super high priced motors that can control a lot of bells and whistles which "most" folks do not need for plain sewing. They are for sure top quality motors - no doubt but they cost a grand ++ easily and are far beyond what I would pay. I agree with dikman a "plain" servo + small 40-50mm pulley + 1:3 speed reducer is a super solution for most applications and affordable as well. College sewing has some data + prices for the EFKAS: https://www.college-sewing.co.uk/ab321-dc1550-efka-servo-motor.html https://www.college-sewing.co.uk/ab321-dc1550-efka-servo-motor.html

beside the shuttle / hook size (the class 17 had 3 shuttle sizes) there were a few different types with minor differences but the bobbin size remained the same afaik. I think I have one or two Durkopp shuttles but I don't not know which belongs to your machine. Usually the 17-1-1 is the one with the smallest shuttle but seems yours is a 17-1-0 which I never heard of. Here is a chart but 17-1-0 is not mentioned but there probably were other Class 17 models before or after the time this chart came out. Can you give us the measures of just the bobbin and some measured of the shuttle? To give you an idea how many different elastic shuttle types existed (no all are Durkopp and not all are for patchers only) see below pictures. In the 1st picture I just noticed the Durkopp shuttle # 5464 with just holes for the thread tension (German: Lochspannung = holes for thread tension) - this pretty much looks like the one you have just smaller I guess.

These shuttles either came with a tension leaf spring or sometimes with 2 small posts you can wrap the thread around for increasing / decreasing the tensions. Seems your was one with 2 small posts which are missing.

you can also buy quite cheap tool sets and I doubt this one is of lesser quality than what Tandy sells. But as always you never know before you tried it. https://www.ebay.de/itm/373492308811 https://www.ebay.de/itm/313620260332

maybe a slicker for the shoe / cobbler trade

what diameter and height have the bobbins? Could be Adler 220 or Singer 144 and the like.

Thomas - are you sure all parts / components in the lower tension unit are present - I´m not sure but it looks incomplete (see picture) and maybe the spring is too weak as well? This is a TU from a Singer 45K but the components are the same (though not interchangeable) - see link: https://leatherworker.net/forum/topic/87669-missing-lower-tension-assembly-on-singer-45k58/?do=findComment&comment=598650 The 2 disc are not just plain washers the center hole has a flat side (just as the post) to prevent the discs from spinning. Then tension comes from the friction between the pulley and the felt washers and the 2 disc so when the 2 discs are spinning you have less friction meaning less thread tension. Thats at least my understanding of the lower tension unit. EDIT: However - on my 45D91 I added a heavier spring to the top tension and control the thread tension that way. I also don´t do the 1.5 time wrap but thats trial and error just figure what works best for you. Nice setup BTW - i like the color of the stand!

well you have a 50/50 chance so should be quite easy to find out. One way is shorter the other way is longer... so... But usually toward you lengthen the stitch.

I think Cowboy CB105 / Cowboy CB2500 is the GA5 type you are looking for. Other than than Singer 45K, Adler 5, Adler 105 are in the same class.

without knowing at what stitching you looked I would say a needle + awl sewing machine like the Campbell Randall https://campbell-randall.com/product/model-campbell-lock-stitch

the website no longer exists. Sorry!

In my has I only had to adjust the needle bar height but it is fiddly because the NB is governed by a V shaped cam but I got it back to live and it worked very well. But when your needle bar is technically okay you do not need a new one just for using 135x17 needles. My old NB worked with 135x17 w/o problems. I only replaced it cause it bent when I tipped over the machine. sure. I have used needle sizes up to NM 140 but again if you current NB is functional you don´t have to replace it just for using different needle sizes. A 34K11 is a much much heavier machine than the 34K2 or 34K5. it weights approx twice as much as a 34K5 and the 34K11 (system 328 or 214x1) is using a needle system that the 34K2 or 34K5 cannot handle. The 328 needle is much longer it does not work in the other 34K machines. How thick is your "thick leather" - in total, not single layers?

Maybe the motor has a poor electronic brake. Honestly if someone puts a disclaimer like this in a description I would not buy it. They may not be available in the US but I love my two JACK 563 servos very much. Oldest works flawless since 2014 on a Singer 111w156 with speed reducer and the other on a Singer 45D91 with heavy flywheel and speed reducer.

yeah - now it´s gone - no surprise at that price - sorry! EDIT: aaaaah, well... You have to be logged in into facebook as it seems - I still can see it when I´m logged in.

Or maybe not looks like it is still available. The roller foot alone sometimes goes for that money, not speaking of the very nice stand and well, the long arm machine.

Bargain Singer 133K17 /as it seems) with loooooooooooonh arm and drop feed + roller foot in NI. https://www.facebook.com/marketplace/item/590592535716845/

Maybe this manual is better: https://www.manualslib.com/manual/1105531/Consew-227r-2.html Same machine - different brand. What Uwe said - if it has a servo motor then you usually can change the rotation direction w/o problem - hope you have a manual for the motor. If it has a clutch motor you most likely have to change some wiring to change the rotation direction.