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Whats the main corse of line twist,is it a bad head down exit or a packing mistake?

Line twists have too many possible causes to say any 1 cause, but body position is always important, if you pack line twists I would be impressed, slider up slow opening allow more time for the canopy to choose a new direction. I'd blame throwing a ball of nylon into 100 mph wind.

lol @ packing a twist.could you place one on the pin looped wrong and that corse it to twist?

Absolutely. If you leave one snoggle longer than the other when you are widening your pack tray to make the tail pocket smooth, it could cause it as well. That is one of the classic arguments for using snag free snoggles on Velcro assisted pin deployments.

call me old school if you like but I have always had 2 extra packing clamps tied together with an old cypress temporary pin.
No expensive snag free type snoggles, never had a problem.

I never even considered trying that. You probably don't have to use a canopy weight or all the rubber bands I am using with that method. I will give that a try.

No matter what anyone says, you can learn a lot on the internet.

I watch a chute packing video on you tube,it looks feckin complecated,gonna watch a few different one,s then i might know what the fuck a cypress temporary pin is .Would another temporary pin be something that could bite your arse if you forgot to pull it before the jump?

well its all a trade off really,but I do like the heading performance that I'm getting from the cypress temporary pin. there are pros and cons to either method, canopy weights of course have multiple uses , have you thought of sticking with the snag free snoggles but using the tandem rubber bands , as they are twice as wide you will only use half the amount.

Jonny
You really need to get to a dropzone to learn to pack, a cypress temporary pin is something only a rigger would possess, you need a licence. and yes if you forget to remove it like any tool it will kill you.

You shouldn't be so hard on Jonny, he is just trying to learn with the resources he has at hand.

And his question has brought about conversation that probably suggest things, like your wise use of a the extra packing clamps and the temporary Cypres pin in the place of snag free snoggles, that many very experienced base jumpers probably never considered until you brought it up here. Again, this shows to me exactly how good of a place to learn to base jump that the internet can be, no matter what the haters say.

As they say in my old neighborhood, "Don't hate the player, hate the game." Though they don't enunciate it that well.

The vast majority of BASE line twists I have seen have resulted from the canopy opening and surging in a different direction from the jumpers body.

Most of these twists have occurred after the canopy has reached full inflation. As the canopy surges in a different direction from the jumper forward travel, the jumper is "slingshotted" back around under the canopy. The asymmetry of the "slingshot" spins the jumper up into twists.

I have seen this happen both slider up and slider down, although I think that it is a larger percentage of slider down twists. Slider up, there is more time for other factors to come into play, so there is more chance for the twists to develop as the canopy moves to line stretch.

The next most common factor I've seen cause line twists is pilot chute oscillation. When the PC performs a full orbit (or more) as the canopy is being extracted, it can spin the canopy up into twists as it moves to line stretch.

The main contributing factors for PC orbiting appear to be asymmetric attachment, PC construction, and pitch technique.

In my opinion, neither "bad head down exit" nor "packing mistake" are significant factors in line twists.

Thanks scub,I think the dumbass first comment i made has not really stood me in good sted I will keep my qustions in the beginners section from now on,but i cant guarntee there wont be some dumb ass beginner type questions

Your attitude certainly seems to have changed since your first few posts. If you follow up on that by actually following the suggested path to give yourself a chance to live, I think people will eventually forgive the silly first statements.

Though I do look forward to you coming back and re-reading these early threads once you have learned some of the basics.

Now go skydive