dikman

Now that is COOL! Pretty clever, you taking the pics while your "willing" helper does the work. Incidentally, I like the anvil stand, that's also .

For a first holster effort that's pretty bloody good. Your ammo, however, isn't .45 Colt, it looks like it's 9mm.

I did that once - a snail was fast in comparison! An interesting experiment but not very practical. Bottom line here is the Kinedyne (Hightex) motor is doubtless a good motor but if I had one, which isn't likely given the cost, I would still fit a speed reducer. And I don't need all the other gimmicks fitted to it.

Yep, pass on it. Old machines like that are a) good for restorers, b) good for collectors or c) could be a useful machine for someone who knows what they're doing - IF the price is right. Which it isn't.

http://hightex-solution.com/blog/technology/2024/0425/315.html?1714026959 This is the Hightex site with info on the 750SH model, which I assume is what we're discussing here. There is a video at the end showing it in operation. It does appear to have reasonable torque at slow speed, but no better than running a cheap servo and speed reducer. For a factory maybe it's an advantage not to have to fit a speed reducer so paying a higher price for a servo may make sense? I said earlier though that for the hobbyist is it cost effective? Not for me, particularly with more than one servo, if a cheapy servo dies I'll simply replace it with another cheapy servo (and save $300+). Interestingly, the link shows a 9-coil motor. Gerry does raise a point about heat generation when running a motor very slow.

Its ONLY advantage over other servos is the claimed startup speed of 50 rpm. Just how practical that is in the real world of leather sewing I don't know. All I do know is that with my limited abilities I need to be able to sew slow and know that there is enough torque to punch through heavy leather - which means a speed reducer.

Mbnaegle has pretty well summed it up. A spray mister is not going to give you much control over the area being "sprayed" or allow any sort of detail work. The external mix airbrushes are the best option for what you want to do, they're simple to use, easy to clean and inexpensive. Where I live they often come up on Marketplace pretty cheap.

Gerry, my understanding is that it's simply a Hightex 750w servo with 12 coils to give it lower startup speed and low-end torque, nothing more (other than a higher price because of the extra coils). I still believe that unless someone goes down the path you have to obtain effective slow-speed control and torque then a speed reducer is needed with a servo used for leatherwork (particularly with the big harness stitchers).

Try dying a piece of the leather before you do anything to it, this will tell you if it's the vinegaroon or something you're doing to the leather (highly likely).

I presume the needle is hitting the needle plate? That will happen if you put sideways pressure on the workpiece, been there done that! You have to guide the piece not force it.

Sure looks a lot nicer than the original!

Sounds like you're chickening out from trying it?

You did good!!! Opportunities like this don't come along too often. (P.s., I'm jealous).

I wonder where they got these things from in the olde days when they supposedly used chicken fat?

Excellent job. I particularly like the way you ended the pattern by extending it to the end of the belt, most just stop it at one of the "crosspoints".

Good luck on doing that!

Yep, me too. I got all excited about all the features on my new wiz-bang first servo and Wiz's comments on analog/brush servos with only a speed control knob had me thinking he needs to move with the times. It's only as I've gained more experience that I've realiised he was right all along. If I could get hold of one of those it would be no big deal to modify it to move the knob away from the motor and near the head unit. That would be an ideal setup. Meanwhile I'll stick with my el-cheapo servos and home-made speed reducers as the Kinedyne motor is not going to do anything better, in fact I suspect my setup is better for my needs as I will get more low-end torque with the reducer. Plus it gives me the ability to tweak the operation by changing the pulley sizes to give me even slower speeds with even more torque if needed.

Nice blogs regarding cutting/punching boards Bruce. Regarding glass, I have the top off a pair of bathroom scales, it's toughened glass and very smooth but only about 15" square. Still very handy for all sorts of things.

I was going to say nice and simple - until I saw the back! Nice job.

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.

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.

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.

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.

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.

That's commendable that you make your own motor, although if you had so much trouble with the original motors you supplied why not just change supplier? It would be interesting to know the failure rate of the motors used by other sellers - Cowboy, Techsew etc. In general modern electronics are pretty reliable but ANY circuit board can fail at ANY time, often for no discernible reason, although surges/spikes are often the main culprit. Wiz, interesting thought but I'd be surprised if they use optical sensors, everyone seems to have gone to Hall Effect sensors now.