Josacraw

I swapped the support tape on a sail to a different size today. I won't bore you with the details but it did involve a few stitches of 45 feet. The bobbin made it through a full run with 92 thread. The machine did excellent in the thickest part of the sail plus some webbing. No dropped stitches. It also did a great job pulling the sail which is no small task. Looking at page 65 of the repair manual it appears that I might be able to adjust the max stitch length but maybe depending on the subclass it is already maxed? Have either of you guys attempted this? Sorry tried to upload the accompanying diagram but it was too big.

I can say without reservation it will run 92. There's talk that it will also run up to a 138 but I have not tried that. The machine came with two bobbins. More are available on eBay. So far I haven't had to buy anything for it. Looks like feet and rotary hooks/bobbin cases are also available not sure about anything deeper.

I also set the machine up with a servo motor. It sews 11 layers of 9oz Dacron without issue. It is interesting how there's a separate stitch length for reverse. I switched the chain foot lift to a knee lift. Bent an old piece of bike frame with a conduit bender and attached it where the pneumatic lift was on that T.I was having trouble getting enough leverage with the foot operated lift to get the thread tension to release. I need to swap the support tape on a furling jib 45 feet in length. That will be a good test of the machine. I'll report back after that. Soi far it seems like an excellent machine for what I want to do and definitely a step above the Consew 255. Also it has quit a bit more room in the throat.

Went and picked that machine today. Got the machine for $350 without a motor. Planning on putting a servo on it anyway. He puts a foot lift on them and pulls the three phase motor and pneumatic controller. He's running an ad in Valdese, NC on marketplace if anyone is interested. Worked several years as an independent repair tech for the local furniture upholstery industry seems to know his stuff. Heck of a nice guy.

Thanks for the reply Glenn! The guy has about 20 of the 291s if anyone is looking for one.

Thinking of upgrading from my Consew 255B to an Adler 291. I use the 255 for sewing boat sails. The lack of reverse is a real bummer and at time it has trouble with large patch assemblies. It drops stitches when I'm sewing through 9 layers of Dacron in the 1/4 inch thick range. I've got the machine well dialed in. So anyways found a affordable 291 with reverse and non of the pneumatic features. What are the limitations of this machine? Will it do a better job? What should I look at in terms of wear. Thanks

I thought i said in the post consew 255b. Thanks

Hello I know this outside of the forums leather scope but since it involves thick fabric and an industrial machine I was hoping you guys might have some advice. I'm sewing through 7 to 8 of 9 oz dacron sail cloth with 92 thread and 22 gauge needles of the SD1 variety. The machine does fine when i get under 5 layers but thicker than that my top thread keeps fraying. Should I be using a larger needle? Or should I try something else. The machine is a consew 255B Thanks

Well if anyone needs them I have a few bobbins and two of the rotary hook assemblies. I hate to see them molder in a box.

1.5 inch by .5 inch

Picked up a consew 255B the other day and the owner threw in a box of parts. In the box was a few of these giant bobbins. Just wondering what machine would use one so large. The photo shows a 28mm on top for scale. thanks Joseph

When sewing through more than six layers of 9oz dacron I'm getting top thread bird nesting on the bottom. It does not happen every time but when it does it continues for the entire stitch. It acts like the top tension is too loose and perhaps that is the case. Maybe the thickness is putting to much drag for the tension arm to draw the thread tight. I have decreased the bobbin tension and maxed out the upper tension but it still on occasion will nest. The odd thing is if it is gonna do it it does it right from the start. So far it has not started doing it halfway through a stitch. Well as always thanks for your advice. I should add I'm using a 20 gauge needle with 92 thread

To follow up I'm using groz 134 system 20 gauge needle in the pfaff 438 and it is working just fine. I am not running anywhere close to the rated SPM for this machine but not crawling either. When sewing through 8 layers of 9 oz dacron the thread was fraying and snapping on a 19 gauge needle but so far it's good on a 20. Visually the needle system are very similar. The zz scarf slopes gently into the eye with a slope that goes about halfway into the eye. The non zz does not slope into the eye at all. Hope this helps someone

Thanks Gregg! Is there any chance that a manual exists for these? I looked em up on the old googs and couldn't find a thing. The puller is very straight forward, no pun intended, and has no reverse function since it is driven off the flywheel. In sail sewing there's not a lot of need to use reverse to lock a stitch but it does come up. So it would be nice to be able to lift the puller while leaving the foot down. Not sure if anyone has seen a modification to do this. And lastly to change stitch length I believe I would adjust the center screw on the flywheel to make the pitman arm more eccentric? As always thanks. What you guys know could fill a warehouse.

I purchased this pfaff 438 that has an added on cloth puller. It is not the pfaff puller but some type of after market. Can anyone tell me what it is/who made it?