Northmount

Specify where you will ship to. Also post your files as jpegs if you want good exposure. Your other posts pics are good, suggest you add jpegs to this post.

Specify where you will ship to.

Again USA or global?

USA or world wide? You need to specify.

@clynm Moved your post to leather sewing machines. Do a google search using the following without quotes. "site:leatherworker.net ferdinand" and you will find a number of posts about Ferdinand machines.

@edwardmorris Great start on resizing your photos. And good photo techniques too. If you reduce the file size to 1024x768 pixels, you can post towards a 100 or more photos in one post.

Take a look at some helps and options in this thread. https://leatherworker.net/forum/topic/15122-how-to-post-pictures-on-lw/?do=findComment&comment=551171

@joebob Moved your post to Marketplace > Business and estate sales. Please read the marketplace rules and abide by them. https://leatherworker.net/forum/forum/70-announcements/ Descriptions, photos, etc.

You mark it sold, moderators lock and move it to old/sold.

So question is, are the feed dogs going backwards, or the walking feed going backwards? If the feet are going the right direction, then need to go back to the feed dogs as the OP first commented.

Many of the walking foot machines use the forward and reverse to adjust the stitch length. That air gizmo on the top back and the control box may do the forward and reverse plus stitch length, thus no lever required. Search for Manuals for these machines. Of course my machine is not a PFAF so can't provide much more help than this. Have fun while sorting this out!

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@Wizcrafts I had to read the OP a few times to get through my head what was happening here, and to see if it might be the motor as you pointed out in another thread. Not being much of an expert on adjusting machines, I get myself in trouble now and then. I was helping someone with a domestic machine making an adjustment to the feed dogs, and suddenly they were feeding backwards. Finally got them heading the right way again but seemed to have really short stitches. Later I tried to help with the machine again as it now wouldn't feed at all. One of the clamps on the linkage that drives the feed dogs had cracked on the opposite side to the screw, so would not keep any adjustment. So being an older Brother domestic, it went in the garbage. Anyhow, my take on this would be the feed dogs are misadjusted since it happens when hand wheeled and by motor.

@ctlippolis Welcome to LW. I moved your post to leather sewing machines where most of the machine guys hang out. You should get some feedback here soon.

If you reduce the size to 800x600 or even to 1280x768 pixels, you have room for a hundred or more files in one post.

There are plenty of options to reduce file size easily and conveniently. See this thread for help with resizing photos. https://leatherworker.net/forum/topic/15122-how-to-post-pictures-on-lw/?do=findComment&comment=551171 Life isn't all about convenience unfortunately.

Neat. I used to ride bike or horse past a slough with lots of cat tails. A red wing blackbird would come out after me every time.

Don't forget brush type with a potentiometer versus digital. Both are used on leather sewing machines.

Please post your pictures here. Third party hosting often results in the link being broken by changes in permissions, files moved, deleted, etc. It then makes the thread useless to those that come along later.

@Littlespade Moved your post to leather sewing machines. Every post in help wanted requires approval before it can be seen by members.

Simple delta wired motor, cut off 1 phase connection and you lose power to 2 phases, so it truly is single phasing. Draw yourself a simple diagram and count the number of phases that receive power. It will become obvious.

You are confusing things by introducing 3 phase motors in a subject that is single phase servo motors. You see to be confusing starting/run windings with 3 phase as well. So throw all that stuff out of this discussion. These servos being discussed here are not being rewired to different voltage supplies at the motor. Hence those comments in your assertions are not valid. The difference is in the circuitry of the PC control boards, which have different part numbers for the different voltage supplies. These are not simple induction motors. You also appear to be assuming the motor has the same HP output at the lower voltage. I agree to some extent that the current drawn by the motor when attached to 110 versus 220 VAC (with no other wiring changes) may tend to be greater during the starting cycle, but not at the instant the switch is thrown. Also depends on the attached load. If I put 2 pole induction motor on a variable auto transformer with no attached load, it will run at rated speed around 40-50 VAC. And the current draw is low. (Doesn't start as fast either.) You can see the current demand decrease due to the back emf as the motor speed increases. As you apply load, the current draw increases to match the load. All standard stuff and logic. Further more, these digital sewing machine servo motors do not operate the same as simple induction motors. Simply stated, the electronics pulses the field (stator) windings as needed to run the motor at the speed demanded by the operator. (There is more to it than that, but let's keep it simple.) If there is a low load demand (HP), the pulse is of shorter duration. So a 220 VAC setup, may run adequately (depending on the electronics design) on 110 VAC. But you are not going to get the same performance, nor top end speed and power.

Happens on single phase motors too. Yes it is worse when 3 phase motors run single phase, but that is not the same as a single phase motor running at 50% voltage.

That is incorrect. The previous discussion neglected back emf that limits running current, usually approximately 1/7 of the starting current which is mostly limited only by the resistance (copper losses) of the windings. A simple resistor circuit will not agree with your statement that it would draw more current at a lower voltage.

Many motors have been damaged due to under voltage. They run hot, have low power output, run slow, cooling fans not as effective due to running slow, etc. Depends on your definition of "fry". As motor winding insulation breaks down due to running hotter than design, internal shorts may occur, and your motor could "fry". If you only use the motor on lower than design voltage for a few minutes now and then, like many hobbyists, you may get away with few problems, just slow and weak output.