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Exactly. And people will spend long money for the latest and greatest. Thousand dollar cell phones when a $40 phone does the same thing, handgun optics that cost more than the handgun they're attached to, the list goes on. I believe what OP was saying is that they already have a 50 RPM start speed, so no need for a 5:1 gear reduction. I also think there's a language barrier involved. I don't know any more than the rest of you how sincere he is, but it's a worthwhile discussion. Definitely got me rethinking some of my choices. Wiz's comments above have made me wish I hand't turned my nose up at those outdated brushed servos! EDIT: Let's not forget leather stamps. Look how many people buy $50 big name stamps when a $7 Hobby Lobby stamp is pretty close.

I´m pretty sure there is a market depending on the price and the features of this motor. So asking potential customers for their needs is a good thing in general. Maybe there will be a line of motors with different features and therefore different prices. The range of leather workers is wide. Some have a deeper wallet than others and some have tools for installing motors and DIY building speed reducers that others don´t have (f.i. due to income or the space they have). So a slow start high torque and affordable plug and play motor is not a bad idea I think. Let them do their research and work at the end we will se what they are coming up with and we can decide if we need it or not. My 2 cents.

This is one "heathen" that appreciates the gesture. Thanks

Well, according to the way the OP responded to my post above, he claimed he achieved all the points I mentioned, which included a 5:1 gear reducer. Must be the language barrier, as I mentioned possibly using an AC servo control, and I doubt he has done that.

That was my point Gerry, I don't think the OP understood what he was agreeing to so no, no gearbox. A bit more searching confirms that Kinedyne is a brand of Hightex, so these are merely Hightex 12-coil servos, not something radically different and super-special. This merely confirms that it's a publicity exercise as anyone who thinks a company like Hightex is going to take notice of discussions about their motors on a forum and make changes to suit their wants is kidding themselves. The OP said it himself (herself?) they are made for the wider commercial market.

I totally agree. However, it is a good discussion about what is used / needed by the average leather hobbyist or small commercial user which is often completely different then what would be needed in a large manufacturing environment. My opinion is the hobbyist sews for pleasure while the commercial user sews for profit. I am still a bit confused about whether this new motor has a build in gear reduction which would be just another take on what Landis had done back in 1998 by putting a 52 to 1 helper geared motor on the Singer 29-71 patcher. I figure if they were doing it today they would have used a brushless servo motor with a gear box attached. I did a video of the one I owned and the geared helper motor can be seen at 4:18 in the video ( https://odysee.com/@SingerSewing:0/singer:a ). kgg

Cool, thank you. I'll keep an eye out. I didn't think to go on a German page like that.

It has been crazy on the farm, haven't spent much time on the computer. Had some fun tonight making an EDC sleeve for my Buck 301, Kaweco Fountain Pen, and a spot for cash and cards. It was fun having to split leather with a skiving knife, it isn't even totally but it works. Going to be fun seeing it age.

Thank you for the kind words. I enjoy teaching at Tandy, they are all skill levels. I am learning also. Appreciate it, ths has been an adventure for me also. Can't wait to bring my setup down. Nice

@Calidora There is a German classified page that usually has some spare parts on it: https://www.kleinanzeigen.de/s-junker-ruh-sd/k0 I just searched for "Junker Ruh SD" at the moment there are two parts for sale. But there have a seller that had a bunch of parts. I know that shipping will be a bit expensive,but I hope that you'll be able to find the parts. Brgds Jonas

Rather than start a new thread I've tacked this on here. My daughter has a gym and some time ago when she moved locations she had a heap of rubber mats, the ones they use on the floor of gyms, left over so I grabbed a couple (I didn't have a use for them but....). Anyhow I've been using them to stand on in my shed when it suddenly occurred to me maybe they would be good as a punching mat? They're very dense rubber, so very heavy, and 15mm thick (3/4" for any heathens out there). Tried punching some leather, nope, just lots of rebound! Hmmm, a cutting mat maybe? Yep, that seems to work, has some "give" so hopefully won't blunt knives too easily and the leather doesn't slip on it. I guess time will tell.

Too much dye localised Are you wetting your leather before applying the dye?

Are you shaking the dye before you use it? May be a separation issue.

That would be my choice and is the same as mine which can do about 90% of the work I do at Wild Harry. Note that the feet available on this machine have the same as the old Singer 111W machines which covers about anything you could ever want. Also note that this is for the head only and you may want to get a table and servo motor from them as well perhaps. Do not get the U shaped table as they get in the way too much as shown in the following video which is a different machine but shows the same problem -

While the bodice of this Letterman Jacket was made from wool and lined with quilted satin, this piece was a transformation of sorts into the leather realm for me. In addition to the hair-on leather stacked letter B, I made the sleeves with some of the softest deerskin I have ever come across. I am also ever-searching for a supplier that can match this quality hide as it is my favorite skin due to its resiliency in relation to its softness. In fact, it was when I was out shopping and first came across this deerskin that I was the inspiration for this jacket. I wanted something that could represent the brand and this is what I came up with. Some other details are the hand cut leather back lettering, the Ursa Major (Great Bear) embroidery, and leather BCN lettering on the front. If you look closely, there is some errors in the stitching. I was till getting used to stitching several layer of leather together. Comments and/or questions are welcome.

Al, I understand what you're saying, I've spent $1000's since getting into shooting (primers and powder are ridiculously expensive now ) and once I got interested in leatherworking I sort of lost track of the expenditure BUT I also do my homework and there's nothing I've read to indicate replacing my existing motor/reducer setup with this "supermotor" is economically viable, nor do I think it will do anything better. Goods in Australia are more expensive than in the US so unfortunately I tend to get "wrapped up" in pricing (particularly since that Chinese Cough has stuffed up shipping costs!). I'm just genuinely confused about this motor and this thread, I think Cumberland Highpower probably picked it, the motor is already made, with the features in the first post, and this is essentially a publicity blitz.

I wouldn't get too wrapped up about price. Lots of people splurge on expensive stuff for their hobbies. Lots of people here drop thousands on a machine anyway, what's a couple hundred more for a cool motor? And bragging rights? I've never found easy availability of the HM-750 in the couple of years I've known about it. I don't even know what they retail for, so will we even be able to point and click the new wonder motor you guys are designing?

A google search for Kinedyne was interesting, the company specialises in manufacturing cargo handling/securing products. They do not make motors they source them from Hightex, who I believe manufacture Cowboy sewing machines. So, who is Cowboy Outlaw working for? The posting makes it sound like Kinedyne, but that can't be the case because they don't manufacture motors but the OP is talking about seeking information for the next motor they're making. If it's Hightex then I doubt they would be very interested in what we say because by his own admission they make motors for large manufacturers who want features we don't. And you didn't answer my question - does it have a built-in gearbox, which you said it does in reply to GerryR? This is becoming confusing.

The minimum speed is 50 RPM only, and the torque of motor is enough to drive any extra heavy duty sewing machine, why with gear reducer? For the high price, easy to explain: other 800W and 1000W servo motor in today market cannot drive CB4500 withour speed reducer, but our 750W motor can; Other motor use Hall Effect sensor, we use optical sensor; If you tight the machine belt, other motor frame maybe bend, our motor frame will not.... For the NPS, I might be wrong, in China we mainly sell to manufacturers who need high speed, all motors to them must be with needle positioner. Jog dials, needle position and 1/2 stitch adjustment, they are optional for people who need it. "For a decent servo to run a 441 sewing heavy leather you only need to keep it simple" -- thank you, really appreciate it!

So your motor has an internal 5:1 gear reducer? That's what you just said, and if so that would explain the high cost. You say that an NPS is "necessary". Who says it's necessary, it's the considered opinion of some of the more experienced on this forum that it is not necessary. I think we need to clarify exactly what your intended market is, on the one hand you're emphasizing extreme slow speed control (without needing a speed reducer) for the likes of a 441-class machine and then you're talking about the necessity for NPS, jog dials, needle up/down position and 1/2 stitch adjustment (?). For a decent servo to run a 441 sewing heavy leather you only need to keep it simple, as has been pointed out - slow speed and easily adjusted variable speed, nothing more is needed. All the other "extras" are more suited to higher speed sewing.

It may be a cultural difference. We need the hand-on experience from leather workers to improve the quality of the motor, so we carefully analyze and explain these suggestions. Is there anything wrong? We tested ISM SV-71 650w servo motor, it can't directly drive extra heavy duty leather sewing machine like CB4500, if without speed reducer

WOW, are you servo engineer? Few people can talk about optical controls deeply. Now we use 600 line encoder, the minimum speed on CB4500 is about 10 stitch per miniute. If use 1200 line encoder, in theory the speed can down to 5 SPM.

Thank you very much for sharing, we have already achieved all the points mentioned above😁😁

We have been looking for over 6 months, we have contacted all motor supplier include HO HSING and ISM.... Even ingnore durbility and perfomance, no servo motor can directly drive CowBoy CB4500 if without speed reducer. Kinedyne HM-750T and HM-750L Energy-saving Motor use Hall Effect sensors, HM-750SL and HM-750S servo motor use optical sensors

Needle positioner is necessary, most servo motors with it. In Italy, Kinedyne HM-750SH is replacing Efka servo motor, that's why our price is higher than other Chinese cheap motors.