|
thebuffalo
Mar 23, 2007, 12:28 PM
Post #1 of 10
(2240 views)
Shortcut
Registered: Jul 2, 2006
Posts: 13
|
When I was a kid, my grandfather passed down a bunch of (probably unsafe) equipment including a goldline, really old carabiners, and some old BD hexes that were super thick and made out of soft aluminum. They were roped with 7-8mm cord and tied with a double fisherman's knot. They were also backed up by tying another fisherman's knot with the tail ends (to the cord, not each other). I haven't seen it done like this since. Any opinions on whether this is better, unnecessary, or whether my grandfather just had OCD?
V
|
|
|
|
|
bobruef
Mar 23, 2007, 1:10 PM
Post #2 of 10
(2210 views)
Shortcut
Registered: Jul 22, 2005
Posts: 884
|
I think if one were ocd, a tripple fisherman's would be the way to go.
|
|
|
|
|
ja1484
Mar 23, 2007, 1:24 PM
Post #3 of 10
(2199 views)
Shortcut
Registered: Aug 10, 2006
Posts: 1935
|
I know a guy who slings his hexes/bigbros with quad fishermans knots. Whatever works for him. I usually just do a triple fish (I sling with Sterling Powercord - not nylon) and check the knots before each climb.
Seems to work fine.
|
|
|
|
|
lostparrot
Mar 23, 2007, 1:55 PM
Post #4 of 10
(2176 views)
Shortcut
Registered: Jan 28, 2007
Posts: 147
|
what about double fish for hexes? doubles back to back lock tight, why bother with trip?
|
|
|
|
|
dan2see
Mar 23, 2007, 4:00 PM
Post #5 of 10
(2120 views)
Shortcut
Registered: Mar 28, 2006
Posts: 1491
|
lostparrot wrote: what about double fish for hexes? doubles back to back lock tight, why bother with trip?
It doesn't matter what type of pro you use: big hex, big nut, or cam -- the knot has to hold.
|
|
|
|
|
ja1484
Mar 23, 2007, 6:25 PM
Post #6 of 10
(2099 views)
Shortcut
Registered: Aug 10, 2006
Posts: 1935
|
dan2see wrote: lostparrot wrote: what about double fish for hexes? doubles back to back lock tight, why bother with trip? The high-tech cords are more slippery than nylon. When your pro catches your fall, it could slide off. That's a reason to tie a triple fisherman's. It doesn't matter what type of pro you use: big hex, big nut, or cam -- the knot has to hold.
Bingo, Sterling says the triple fishermans knot is the appropriate knot to use when securing Powercord, so that's what I use.
Most nylon cords are fine with a double fishermans, but they tend to be bulkier and less abrasion resistant. They have their advantages, and I still use nylon for equalletes and prusik cord, and I use nylon sewn slings, (for obvious reasons), but rarely for slinging pro any more.
|
|
|
|
|
COsnowman
Sep 13, 2008, 12:51 AM
Post #7 of 10
(1718 views)
Shortcut
Registered: Aug 1, 2008
Posts: 2
|
Just interested in knowing if the double fish knot is the strongest/safest knot for joining two ropes for rappel. I would also like some input into the debunking of micro fractures if metal gear. Any help out there thanks.
|
|
|
|
|
binrat
Sep 13, 2008, 11:06 AM
Post #8 of 10
(1624 views)
Shortcut
Registered: Jul 27, 2006
Posts: 1155
|
CO;
The DF knot is strong, but may get caught when you pull it. There are other knots that are equally as strong but don't catch that easy.
binrat
|
|
|
|
|
milesenoell
Sep 13, 2008, 12:50 PM
Post #9 of 10
(1595 views)
Shortcut
Registered: Sep 19, 2006
Posts: 1111
|
COsnowman wrote: Just interested in knowing if the double fish knot is the strongest/safest knot for joining two ropes for rappel. I would also like some input into the debunking of micro fractures if metal gear. Any help out there thanks.
As far as I know, micro-fractures from drops are a real concern in metal gear, but that they tend to come from drops not smacks so you tend to know if you are in jeopardy.
As for 2 rope raps, the Euro Death Knot (aka: double overhand knot) well dressed with big tails is an old standard
|
|
|
|
|
acorneau
Sep 15, 2008, 5:31 AM
Post #10 of 10
(1489 views)
Shortcut
Registered: Feb 6, 2008
Posts: 2805
|
COsnowman wrote: I would also like some input into the debunking of micro fractures if metal gear. Any help out there thanks.
Read here: http://onrope1.com/Myth1.htm
|
|
|
|
|
|
