Monday, July 29, 2019

Always useful

3 comments:

  1. tool of many many uses. just don't forget to zippo the cut ends or you'll have such a mess.

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  2. Hi C.W.,
    If it doesn't say,"Mil-C-5040, Type III, 550 Lb. Test." It ain't,"The Real McCoy!!!!" I check out "Para Cord' in stores and the "fine print" says,"made in china 80 lb. test" and that's "max!!" Hahahaha!!
    'Back in the day there was lots of "Cheapo" surplus round chutes around the DZ!! If they got damaged or malfunctioned, we cut the lines off and had a good supply of "550 cord!!"
    If ya' get some of "the good stuff" with a black, broken spiral on it, that's the "Type II and it is rated at 400 lbs." (note T/III has 7 inner core strands and T/II has 5) Also, if you "Gut" either the T/II or T/III you now have Type IIA rated at 250 lbs. Also you will note one strand to be multi colored... each manufacturer has it's own "Color Code!!!"
    BTW the "Breaking strength" rating is the standard acquired by stretching a test sample at the rate of "3 inches per minute...to failure!!" eg. 550 cord has to go to "at Least!" 550 lbs... it's that "3 inches per minute" thing that gets everyone!! When I worked for Irvin Aerospace, 1987-96 in Santa Ana, Ca. (before we moved to NC) we had a QC lab that "Tested" every lot of textiles and hardware that came thru the door!! You'd be surprised at the number of manufacturers that got taken off our "Preferred provider list" till they cleaned up their act....
    I worked in the "Chute' Rigging area" right next to the lab.. when "KK!!" (Kwak Kan, the QC tech.) would test some "Heavy" stuff it sounded like a cannon going off!! Webbing or cord under a 1,000 lb test sounded like a .45ACP going off!!.. get up to the 8-10K+ stuff and it was more like stick of dynamite!! A Big BOOM!!
    Blue skies.
    skybill...... "The Old 'Rigger!!!!!"

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