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David Olsen
(oware)

Locale: Steptoe Butte
Test 3 cuben fiber 1 vs sil on 11/12/2010 16:30:52 MST Print View

CN1K.08 cuben fiber (white) and 30d silicone coated 1.35/oz nylon (navy)

This time I used a single row of stitches
for the center seam, no folding before
stitching, #14 needle, 46 nylon thread,
6 stitches per inch.cuben 1 vs sil before.jpg

cuben 1 vs sil center seam.jpg

Tie outs stitched with a 5 pass z tack,
no reinforcements and NO HEM this time,just stitched right to
the fabric.cuben 1 vs sil tieout detail.jpgcuben 1 vs sil tieout detail b.jpg

The failure occured on both the sil nylon and the cuben fiber at the center
seam. Scale showed 42 lbs at the time
of failure.cuben 1 vs sil failure 42 lbs.jpg

Edited by oware on 11/12/2010 16:34:01 MST.

Greg Mihalik
(greg23) - M

Locale: Colorado
Re: Test 3 cuben fiber 1 vs sil on 11/12/2010 16:37:34 MST Print View

David,
It looks like the thread failed also.
Is that correct?


BTW, thanks for going through this drill. Nothing like fast-and-dirty, real-world, hands-on data acquisition.

David Olsen
(oware)

Locale: Steptoe Butte
Thread on 11/12/2010 16:40:02 MST Print View

Yes, it did. That is kind of interesting as the webbing is
1 inch wide and if the force is transmitted to one inch
of the center seam, that 1 inch would hold 6 stitches, the thread is 7 lbs per stitch breaking force, and the whole shebang gave way at 42 lbs.

Edited by oware on 11/12/2010 16:44:35 MST.