MartelloDesigns

Thank you guys for the helpful feedback! *I have tried both hand cranking into the leather and letting the motor try and pick up from there, and just letting the machine try it from the start. I'm not sure about pulley distances, and what the correct distances would be. I just make it work, lol. I will get the speed reducer. Expensive, but that Box Style looks perfect for my application. Thanks again! Rick

HI All, I have a Seiko STH flatbed (The Japanese made equivalent of the Consew RB205/6 etc) , with good servo motor. I added a larger handwheel for a little bit of speed control. My question is, what determines how thick/dense of leather a machine can comfortably get through? My machine has no problem with sewing say a 5oz piece to a thinner piece, but if I put 2 5oz together, or anything really thicker than that it basically just binds up and won't get through it. It is not a threading or bobbin binding, it just feels like the motor just doesn't have the 'oomph' to get through that thick stuff. Also, it is not the presser lift or a question of the pieces fitting under the foot- they fit easily. On occasion I can see the motor pulley either just locked up (motor humming like its trying) and sometimes it will be the belt slipping, which is already pretty tight. Is it just a question of the motor power? Meaning, I get a new more powerful servo motor and all is well? I know having a dual wheel speed reducer provides additional torque, but is it that much of a difference? I had the Cobra 26 before, and it would just laugh at these thicknesses and go right through. The Seiko is very smooth and sews beautifully on thinner or less dense leathers. Thank you!

SOLD!

Selling my Cobra Class 26 cylinder arm machine, including the flat table attachment. This machine has less than 10 hours on it, if that. Comes with all the associated parts, tools and 4 large bobbins. Includes drop down edge guide. Of course includes bobbin winder and thread stand. It is exactly as pictured. Most here know the machine, it is smooth and operates like butter. I have 2 other machines, and clearly I don't use this one at all, so it should go to someone that could really use its capabilities. In Las Vegas area, so prefer local sale if possible. $2000 and it's yours.