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Posted

Why would someone have locked the ability to change the stitch. Maybe because the threads are gone and just gave up.

jjs111w

I think thats exactly why someone would lock it. I think I remember gottaknow (sp?) posting that he will sometimes lock the length on the machines in the factory to prevent accidental adjustments. You may find a certain length you like that fits what you do and just leave it.

  • Members
Posted

The mystery is slowing being solved it appears. As I indicated I do have it locked again and it is giving me about 12/inch. All I was getting initially was 6. Not having done any leather auto seat upholstery I am now wondering what might be the optimum stitch lenght. The next project will not have any threads appearing for decorative reasons. Any comments?

But I will still try to get the adjustment to work, other wise I will just lock it at the optimum value and sew on.

Thanks to all

jjs111w

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Posted

For leather seat covers I'd have left it at 6/inch, and 5 looks better on the decorative French seams etc , I use up to 3/inch on my seats in some cases on the decorative stitching over thick foam etc because a stitch starting out at 5/16 inch can end up nearer a 1/4 when sewn over 3/4 scrim foam on a non walking foot machine , you would be better off with a joys or yamata or typical pf5318 , all the same machine under different names , these are in my opinion the best value for money walking foot machine available on which you can produce really nice quality work , they never drag the thread in and jam , have large capacity bobbins and you can buy a good second hand one for £300 here in the uk . I keep one as a back up machine to my seiko lsw8bl .

Regards Craig

  • Members
Posted
mk1madnesd

Now that I know how to manually lock the thread lenght if I cannot get the adjustment mechanism to work, I can set it back to around 6. Right now the machine is all apart trying to install a home made speed reducer as this motor is 3500 rpm and way to fast. I have no prior experience with and industrial machine so practice and slowing down is in the cards.

We will let all of you know how we make out.

Thanks

jjs111w

  • Members
Posted

Also lengthen the arm on the motor at least 8 inches that gives you much more control of the motor , you're gonna struggle with that motor though you want s 1400 rpm or a servo motor really !

Good luck

  • Members
Posted

I got the stitch length working so thanks to all. Turns out I was missing screw A, screw B was the wrong one (not long enough). Got the right parts, unlocked the eccentric and seems to be working. Only issue is the threads on the hand wheel are gone so I am using a hose clamp around the adjustment knob to lock it to the pulley wheel..

Thanks to all for the help.

jjs111w

See my separate post for the home made speed reducer.

  • 4 years later...

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