Could some of you guy's please post pics of how you attached your chute to your shock cord? TIA
Could some of you guy's please post pics of how you attached your chute to your shock cord? TIA
Fly Safe & Fly High
TRA #14026
Robbie
I suppose it depends upon the type of shock cord. With kevlar and nylon strap, I have had good luck using this loop:
http://www.animatedknots.com/alpinebutterfly/index.php
It holds up with stress on the line, and can be untied and moved if needed. I have attached a quick link to a swivel, or in a pinch attached the chute directly to the loop of cord.
NAR, TRA L2
Member: CMASS, MMMSC
"I haven't slept for a week because that would be too long." -Mitch Hedberg
I use this know to tie my shock cord in a loop, then use an appropriately sized quick link or delta link.
http://www.animatedknots.com/bowline...matedknots.com
Edward
I just tie an overhand loop in the cord, and then attach quick link. Swivel then connects the link in the harness to the parachute lines.
Have no fear, Chaos is here.
Dan dan Daaaah
L1 - RalphCo Crayon H225 -::- L2 - ARR Basic Blues 3" J270
TRA 13815 - NAR 87999
Now playing with clusters and staging!
I use a hangmang's knot since they end up in the trees.
I just pull a loop, tie an overhand in it (water knot). Attach chute to loop via lark's head.
Kevin Wuchevich
Tripoli Pittsburgh
TRA 12238
I'm generally using Kevlar lines, so I tie a bowline knot in the Kevlar. I attach to that with a quick link or swivel, for larger stuff. For smaller stuff, I may directly use the bowline.
Gerald
Based on a suggestion in a TRF post a while back, I've started attaching the rocket body to the nose cone with a shock cord then connecting the parachute to the nose cone with a separate short shock cord. For larger rockets, it's easier to hook up since none of the connections are in the middle of a shock cord. And, it seems to reduce twisting on the way down since the nose cone is hanging below the parachute in line with the body instead of swinging around.
-- Roger
I'm all about the butterfly knot. Based on experience, I'm also about to be all about the swivel as well! About 10 years ago I sort of got into caving and collected equipment, knowledge, and the book "On Rope One" which I highly recommend to anyone working with cord or webbing. That's where I learned the butterfly and a host of other very useful bends and knots.
Depending on the situation I use either a butterfly or figure-8 on cord and a water knot loop on webbing. Just remember that knots that are good in rope are not good in webbing as well as the other way around.
-James Hamilton
L2
https://sites.google.com/site/disasterguysrocketry/
I love America but I also love Canadian bacon, whiskey, and MOTORS.
Most of my knots are bowlines. It is probably the most useful knot to learn how to tie for anything.
TRA #14037 Level 2
NAR #90851 Level 2
KD0TPW
Gosh Darn Good Rocket Day!!!
I'm a big fan of heavy duty swivels and quick links.
Kit (AKA Cranky Kong)
Total Total Impulse as BAR: 7,753.69 Ns (Equivalent to a 51% M motor.)
=| Calirado, Colofornia...what's the diff anymore? |=
I do an overhand loop. It has never failed for me.
-----------------------
Chuck Haislip
NAR/Tripoli Level 3
Level 1 - LOC Minie Magg; Level 2 - PR Broken Arrow;
Level 3 - 10 inch Nike Smoke
Ns for Year: 0 on hiatus serving our GREAT country in Kuwait
My rockets usually fly naked. If they survive, they earn their paint.
Come fly with ROSCO or ICBM in Orangeburg SC => http://rocketrysouthcarolina.com
I wasn't clear in previous posts regarding my use of the butterfly knot. I use that one as a mid-line knot (also known as a Harness loop). For attaching something to the END of the line, I always use an overhand knot. variations of the overhand knot such as the water knot and beer knot are perfectly fine for life-rated applications when using webbing. For creating an endless loop, the water knot is used. Just an overhand knot with the other end of the webbing coming around and following through the knot. I tried the beer knot once... not something you would use in the field but while sitting on the couch it was fun to tie. Makes one heck of an endless loop!
Thanks for all the help guy's I appreciate it.I am going to give the Butterfly knot a try.
Fly Safe & Fly High
TRA #14026
Robbie
I don't know the name of the knot I use. "Fred," I think, is probably appropriate. I tie Fred, then attach a quick-link to secure Fred to whatever I'm attaching him to. With heavier NC's, I tend to put them about 1/3 from the end of the shock cord, with the 'chute attached at the top.
Later!
--Coop
Build photo diaries on my Facebook page: http://www.facebook.com/geoff.cooper.391 ALL BUILD DIARIES ARE SET FOR PUBLIC VIEW.
Q: What's the difference between a geek and a nerd?
A: A nerd has documentation.
I take all of the lines and do a girth hitch (falsely known as a larks head) on to the shock cord. Its simple and easy to undo, and hasn't failed me with 1/2A-H.
http://www.animatedknots.com/girth/
-Jack
Jack
KC9RGW
NAR: 94450
Jr. L1: 5/20/12 (Now L1)
Best knot I've found for attaching Chutes or Streamers in-line on Elastic or anyother Shockline material including kevlar is the Butterfly Knot.
Hope the tying illistration is of help.
Keep em Flyin Micronzied
John
Mrcluster/Micromeister
Nar-15731
Co-moderator MicroMaxRockets yahoo group.
http://groups.yahoo.com/group/MicroMaxRockets/