Cobra class 4: Shuttle hook assembly

[Tim Schroeder]

You can make these machines sew backwards in the same holes. Here's 13 stitches forwards at max stitch length then backwards then forwards again. This is 2 layers of 2/3 oz. chrome tan with #138 thread using HE&P #25 needle plate and feed dog. The back looks pretty much the same. This the only machine I have been able to make stitch backwards in the same holes and the back looks like the front. Not sure how the little slide plate that comes in the top of the stitch length adjuster works but I removed it and started shimming the bottom until I got it right. 

10 hours ago, DieselTech said:

I keep finding with 138 thread I need to increase bobbin tension & then back my tension disc's off to almost nothing, when switching from 277 to 138 thread

Just curious if you are going thru the eyelet then around the tension disc and then back thru the eyelet again like Cobra says to thread machine. That creates unwanted tension you can never get rid of. Try threading the machine without going back thru the eyelet on both the top and bottom tension disc. 

[DieselTech]

3 minutes ago, Tim Schroeder said:

You can make these machines sew backwards in the same holes. Here's 13 stitches forwards at max stitch length then backwards then forwards again. This is 2 layers of 2/3 oz. chrome tan with #138 thread using HE&P #25 needle plate and feed dog. The back looks pretty much the same. This the only machine I have been able to make stitch backwards in the same holes and the back looks like the front. Not sure how the little slide plate that comes in the top of the stitch length adjuster works but I removed it and started shimming the bottom until I got it right. 

Just curious if you are going thru the eyelet then around the tension disc and then back thru the eyelet again like Cobra says to thread machine. That creates unwanted tension you can never get rid of. Try threading the machine without going back thru the eyelet on both the top and bottom tension disc. 

Thanks for the tip & tricks on the cobra class 4. I'm glad you shared this with me. I'm glad to see this & you were willing to share it. Thanks.