Wizcrafts

Make sure you specify you want the smallest pulley they have for the motor. Some have a 45mm and others a 50mm small pulley. However, they typically have 70mm pulleys for high speeds in textile machines, as does the motor in the link you provided. It will be harder to sew slowly with that large pulley. Then compare that diameter to the pulley on your current motor. You'll need a shorter v-belt that matches to difference in whatever measurement you use.

Leather Machine Co Customer Service 866-962-9880

Here is the motor I use: https://www.tolindsewmach.com/motors.html

Number 207 thread is a fairly strong thread. I use it to sew suede lined rifle slings and guitar straps that total about 9 to 12 ounces. It can sew 8 ounces but it is a little tricky to hide the knots. These items don't place much strain on the thread; it just holds the layers together. Handgun holsters are a different matter. The edge stitching isn't just holding layers together. It has to hold the shaped or unshaped product together under the stress of drawing and holstering a steel weapon. You want the strongest thread holding it together. I use #277 to hold holsters together. It is possible to bury the knots in 1/4 inch of veg-tan if you play with the top and bottom tensions. I assume you are making pancake holsters if they are only 1/4 inch thick. Most of our holsters run between 3/8 and 3/4 inch thick at the outer edge. There is a filler between the layers that positions the weapon. This filler can vary from 1/4 inch to 1/2 inch. Your Cobra Class 4 is fully capable of sewing 3/4 inch thick holsters!

Your thread is too large for that thickness. Move down to #138 thread and a #23 needle. And, back off the foot pressure screw.

They don't bring as much because these were highly modified machines that are long out of production and spare parts and manuals are very hard, if not impossible to find. They will have some parts in common with their ancestors upon whose carcasses they were built.

My first impression is the the thread is too large for the thickness of the leather. You can verify this by telling us what sizes the thread and needle are, plus the combined thickness of the leather being sewn. When a new Cobra or Cowboy heavy stitcher is delivered to the customer, there should be a stack of leather 3/4 inch thick under the feet, or attached by trailing thread, sewn on that machine with #277 thread and a #25 leather point needle. It is your proof that the machine was properly setup and adjusted for thick work and thick thread. Aside from the needle and thread possibly being too big for that thickness, another explanation could be excessive foot pressure for that leather thickness. When you got the machine from the warehouse, the pressure screw would be screwed way down, far enough to hold down a 3/4 inch stack of leather sewn with a loaded #25 needle. If your two pieces are only 12 to 16 ounces, the pressure screw needs to be backed out considerably. It only needs to apply enough pressure to prevent the leather from lifting as the loaded needle ascends, which would cause skipped stitches. Any pressure beyond that will needlessly force the bottom leather to be impressed into the elongated slot in the feed dog. It also causes unnecessary foot tracks to happen on the top grain. The "pressure screw" is on top of the head, directly over the bar to which the outside presser foot is attached. It is known as the "presser bar."

@JRP430 - I moved your post to the Marketplace section where all ads for items for sale must be placed. This section is for old and used sewing machines.

We could probably shorten that clunky phrase to just Wizbit ! ;-) LULZ

If you do, tell Bob I sent you. LOL

Yes.

A 3:1 reducer will reduce your motor speed to 1/3rd whatever it is at the motor pulley. If your motor starts with a jerk at 100 rpm, it would start with a jerk at 33.33 rpm with the reducer. I've had motors like that and got rid of them, replacing them with Family Sew FS-550S servo motors with 2 inch pulleys and speed reducers.

You will be able to guesstimate how far the bar can be lowered by raising the feet with the hand lifter and handwheeling the machine. If the needle bar doesn't make contact with the feet, it can be lowered until it just misses the fully raised feet. If the manual states the distance, go with that measurement. Making sure you are using the correct needle system, install a new needle and fully seat it and check the timing. If the hook timing is still out, adjust the hook to intersect about 1/16" above the eye of the needle after it has risen 3/32" above BDC.

This makes two members in one week who mistakenly bought Pfaff 335 style binding machines thinking they were standard cylinder arm machines. I would advise you to post pictures and ask before buying a similar machine if you are looking at buying a used cylinder arm machine off some local ad, or auction site. If you see one advertised by a dealer, ask questions first. Binder machines are specifically built and equipped to sew edge binding onto material, like seat covers and sports gear and bags. They are not equipped to do "normal" sewing without changing out or adding some often times expensive parts. Off-brand machines may be even harder to change over if standard parts don't fit.

Yep, get a 2:1 or 3:1 speed reducer.

Are you sure its the hook that moved and not the needle bar? SOP is when the needle has risen 3/32 inch the hook should intersect it about 1/16 inch above the eye. If the impact that broke the needle also push the bar up, you can never get it in time until you lower the needle bar to where it belongs.

That Taurus looks like a clone of a Pfaff 335 binder machine. But, the drop down edge guide suggests that is is used for normal stitching too. To do this requires a needle plate over the feed dog. You would be wise to go and test the machine to see if it properly feeds the leather or other material you want to sew. It should get at least 5 stitches per inch, or longer, into 1/8 inch of thickness. Other than that, it looks to be in great condition and has a digital servo motor. Unfortunately, the pictures don't have a closeup of the feed area from slightly above to see if there is a needle plate over the feed dog.

All I have found out about the differences is that the light/medium duty hook takes M style bobbins, which holds approximately 1.58x more thread than the G style bobbins that are used in the Singer 111 walking foot machines upon which the Juki LU-562 and 563 were cloned. In contrast, the heavy duty 563 hook takes U style, double capacity (2x) bobbins. This difference in capacity is based upon the standard G size bobbin which is regarded as 1x capacity in a Singer 111 walking foot machine.

I received my package from Australia last week. It left AUS on a Tuesday (in US Eastern time) and arrived in the US the next day (there is 14 hours difference in time zones) and was delivered to me two days later. There was a long delay getting it out of the country though, at the post office. They are short staffed in AUS too.

That foot with the flag toe is called a paddle foot in the USA. For those who don't already know this, the paddle foot comes in right and left toe versions that are sold as accessories for the big Cowboy 441 clones.

I wanted to report that I used my narrow Aussie throat plate and feed dog to sew a holster with #277 thread and a #25 needle on my Cowboy CB4500. Previously, I used them to sew a zipper into a cloth coat using #92 thread and a #19 needle. I had to increase the top tension which I had backed off to balance the knots with the lighter thread. I will probably leave this set in place going forward unless I need to use my holster or stirrup plate. My next narrow set test will be with the inline feet I got from Toledo Industrial Sewing Machines. Previously, I used them with the slotted throat plate sans the feed dog. FYI: sewing leather on a Juki 441, or a clone, without any feed dog changes the forward stitch length and throws the reverse stitches out of sync (vs using a feed dog). This is because of the leather's drag on the throat plate under the usually high pressure of the inside foot. Without a bottom feeder you only have dual feed. With the dog you have a more predictable triple feed.

You need to add the model number, and if possible, a photo of your machine. Ferdinand made several types of leather sewing machines. Each was different. That company has been out of business for years. Their remaining parts were sold to various sewing machine dealers, at least one of which is now out of business. Ferdinand sewing machines have been discussed in this forum for many years. They were all customized versions of other available heavy stitchers that Ferdinand modified with custom made parts. Some folks have identified the original machines they were built upon. Some of those machines have online manuals that were available at the time that information was posted on the forum. Here is the google search results for Ferdinand sewing machines discussed on Leatherworker.net.

I just ordered three packs of 794 needles from Toledo Industrial Sewing Machines (866-362-7397). Bob Kovar stocks them and system 7x3 in most or all sizes and point shapes. The leather points I get are either S (inline) or D (tri-point). Type 7x3 are round points for cloth, webbing, vinyls, plastics or smaller sizes that don't have a leather point available any more. S points sort of submerge the ends due to the slicing shape, giving the impression that the stitches are shorter. D points keep the ends on the top so it looks like you have longer stitches. I sometimes use the D points when I want the top thread to stand out more than with the S points.

I think that when Juki designed the TSC-441 they marketed it for companies that sewed buffing wheels, car wash cloths and other thick items that would need very thick thread. The hole in the so-called blanket feed dog, part of the blanket foot set, allows for up to a number 27 needle (for #415 bonded or 6 cord linen thread). When the Chinese cloned the Japanese 441, they copied the feed dog hole in the blanket set, but elongated it into an oval slot in the smooth top leather feed dog. Most people buying a new Cowboy, Cobra, or Techsew 441 clone will receive the blanket set with their machine. I got it with my Cowboy CB4500 and one of my best friends got it with his Cobra Class 4.

Check your motor to see if it accidentally got set to rotate the wrong way. This recently happened to another member.