Hello last resort of the free internet.

I had to sew some stoff for my basement and realized it is a real (marksmen?-)ship. It is more complicated then cutting wood for some furniture.

Anyhow, I want to enlarge my machine’s sewing step. That is, I want it to be able to sew more than five milimeters with one step. Maybe I should add a motor with more then 90 W (current Motor), but can this archived with gearing?

I do not care for sewing steps beyond <2 mm. Though my clutch allows any step-width fluidly. I am capable of deconstruct the machine and weld anything to it what is required. And make it in weight.

But my issue is figuring out what change would enlarge the step-width.

Even if your suggestion would change my settings, let me know your idea please.

Some pictures of the Internals:

(when issuing my hand down, the gearing enlarges into the direction of the arrow. But there is a ?Bobbing? on the left side. Imo this should be dependend on a rotation so I can enlarge the leverage nonetheless)

I would appreciate any tip!

I try to be in the middle of my own opinion and beeing inclusive. Sorry for stepping ppl on the toes!

  • 7dev7random7@suppo.fiOP
    2·
    2 days ago

    I understand you know how to change the step length that can be changed now, yes?

    Yea

    You say <2mm to 5mm. My very similar machine can go to almost 10mm but it cannot keep the thread very tight.

    I would die for 10 mm. I would be in to adjust the machine while sewing for any step lenght larger then 5 but 10 mm would be perfect.

    This is the limiting thing, the machine, every part, is designed for sewing a length of 2-8mm or whatever. A longer stitch step would need a complete change and probably a stronger motor.

    I can change gearings, leverages and axles if I understand what to communicate. I am not bound to the current chassis and motor. I can construct a chassis afterwards rezpecting current alignments within nm.

    By moving the knob or lever that changes the stitch step length, you will see what is going on.

    I circled the change in blue. Leveraging the handle could be the case but axles wind on their own. It is a mind fuc* which can only be put in perspective by Engineers, imo.

    • rhythmisaprancer@moist.catsweat.com
      7·
      2 days ago

      I am not an engineer, either 🤔 I see your front picture, my machine is similar. I would not be able to change anything myself. As @gadfly1999@lemm.ee mentioned, these really are highly engineered. If you change one thing, you must change everything.

      • 7dev7random7@suppo.fiOP
        2·
        1 day ago

        I fear this may be the case but since I am not an engineer thought about pulling some opinions here thumbsup

        • rhythmisaprancer@moist.catsweat.com
          2·
          16 hours ago

          The important thing is tension, for the thread to be tight. If you can do this, happy engineering! My similar machine, tension on the string is hard, more with a longer length/step.