Re: [long2jump] Dual pin vs Velcro
long2jump wrote:
Getting back into BASE jumping, but only have 3 jumps from 2004. Before purchasing a rig. I am trying to find out the diff. bettween Dual Pin and Velcro?[
I like my pin rig (Vertigo (now Apex) Warlock) more than the velcro (Stunts Extreme). If I didn't pack with clamps (that make a neat trapezoidal pack job which fits the narrower shoulder area easy) and still had a velcro rig with a non-rectangular container I'd probably have a stronger preference for the pins. I'm a back country parachutist with too many bridge jumps not a tower climbing sort of guy; I don't know how that would change things.
With the pin rig, I can move the top of the side flaps to the center and close, then deal with the bottom completely separately.
With the velcro rig it's pull the entire left flap to the right location, pull the entire right flap to the right location, and with the two nice and parallel lay the shrivel flap on top. It's physically more work. I might even sweat on a warmer day. Especially without clamps that make for a solid pack job that fits the rig.
Most pin rigs have a mechanism (velcro, tuck tab) to hold the bridle for hand-held use plus a reasonable tuck tab/flap configuration so out-of-order container openings are not a problem there.
Insufficient pin tension will lead to out-of-order openings that could be a problem. Note the bottom pin in the attachment - 4 seconds slider up. The pins scared me at first so I left them loose. Proper tension didn't make a difference for short slider down delays so I made things reasonable for all jumps.
Normal pack job variations (when you fold the material between A+B, B+C, and C+D groups separately it gets creases that make it fold to the same width every time; and you learn how big things are relative to references, like the long-wise folds compared to your arm) are limited and not enough to make a big difference. If people are borrowing the rig and doing especially bad that may be important. Just check it when you're closing.
Slightly sub-optimal pack job shape can mean the top of the velcro peels. Roll your shoulders in and see what happens before you're done so that doesn't happen at an object. Fixing this is a bigger issue.
More paranoid people have looked at what happens to the pull force on their pin rigs whilst wearing them.