RickV

I would just like to thank everyone for their advice. I found out multiple things about this machine recently. I found out that my old Mechanic was cutting corners. It turns out that the Tension release pin was worn down and now engaging, which is how i found out that instead of ordering the pin and replacing it the mechanic used a broken needle to "fix" the problem. I also found out that the sewist that was using this machine was not doing proper preventative maintenance. I removed the fly wheel to find out that the shaft had burned and blued. warping it pretty badly. I have no other option but to send it to the shop to replace the shaft and have the mechanics there give the whole machine the once over. The condition that the machine was in would have tore itself apart in 6-12 months if we hadn't found out about the shaft damage.

I referenced that chart. Our purchaser had a chart from the company we order from, according to their chart the 21 needle was rated for 92 and 135 which was a bit confusing to me.

Very interesting. I would have never known about the pin issue. I will follow up with images soon. I did look back our current needle size is 21 with 135 thread. we will be testing smaller needles with 92 weight thread next aswell.

Interesting. What is the purpose of the pin? i was under the assumption that the thread has to wrap around the pin to sew properly.

It looks like that due to the fact that its pulling through the bottom so hard but, I am stumped cause ive never seen a machine pull thread through the bottom of the leather without a tension spring on it. I removed the tension spring from the bobbin case to see what would happen and the issue im having still remains. It makes no sense to me that it would pull through like that with the tension spring removed.

Top side Bottom side with bobbin tension spring removed.

Here is the bottom side. Here is where i am stumped. I removed the tension spring from the bobbin. Thinking that it would surely pull through the top and leave me with a straight line for my top thread as there was no tension what so ever on the bobbin. The thread still pulled through the bottom. images to follow.

This is the top side ^

Our current needle size is 135x17 and the thread weight is 135

The materials that are being sewn togethar are as follows Leather-2.1-2.3mm Binding-.8-1.0mm When checking the adjustments we made we are sewing through 2 pieces of leather so the total thickness woule be between 4.2-4.6mm thick. i will follow up with pictures.

We have replaced all springs with new parts on 2 different occasions. The issue is that we can have the top tension adjusted to have way more tension than the tension spring on the bobbin, as well as taking all tension off of the bobbin and it is still pulling through the bottom. i will run through these suggestions and double check that the bobbin is in correctly.

Dwight, The machine is a Consew227R-2. If it would help any we use the cylinder machines to put the binding on ballgloves.

Hello All, We are having an issue with cylinder arm machines as of late. The machine mechanic and myself have been working on the same machine for months and no ground has been gained. The current problem we are having has to do with the tension on the machine. There is tension on the top(too much for our liking) and there is absolutely no tension on the bobbin(we have replaced tensions spring several times) but somehow the thread is being pulled through the bottom of our leather. Its a mystery that we have not been able to solve so i am hoping that someone out there may have some insight as too what can be done to fix it or if its a lost cause. Thank You