Basejumper.com - archive

Are there any?

Specific jump types? Landing areas? Etc...

I'm lookin for reasons, not rules here.

Thanks!!!!





Sorry if this is a repeat post, I can't do much internet surfing/research here at work and I can't get this question off my mind.

<3Lindsay

disclaimer... i have no idea what im talking about

maybe if youre only doing terminal jumps or skydives....
or mabe youre just not into solid objects or low freefalls....

My non-vented canopy costs less than my vented canopy and I like the openings better for terminal jumps.

If I only had 1 canopy for all my jumps, I would get a vented canopy (specifically a Black Jack). But there are still plenty of jumps where I would jump my Ace (non-vented). Wingsuit jumps for sure.

I have a BlackJack which I love for the lower stuff and Buildings or small cliffs But I like my Mojo for termilal or near terminal stuff. It's got a smaller packing volume which is easier to pack in my rig and it opens nice and soft. If I could only have one it would deffinately be the BJ though.
~J

In my opinion, there are no reasons.

They work well, but modern vented canopies are better. I jump 2 different Black Jacks for all delays.

 

They are less sensitive to very DBS, they fly and flare better, and provide softer openings at terminal.

"They work well", but modern vented canopies are better.

-----
I don't fear for your life. Buy your own

anyone have alot of low jumps with nonvented, like the 200' feet range? if so, any problems I should look out for?

yes. premature impact...

I have good amount from 250ish on a non-vented. The falling distance to bottom skin inflation was the same. The time from bottom skin inflation to pressurization is noticeable.

The after the bottom skin would inflate, the canopy would still want to drop as it pressurized. It opened, then would (hard to describe) mush downward then fly.

The vented canopy would pressurize and was flyable noticeably sooner.

If you are canopy nose to the object, a vented canopy will possibly stay inflated or reinflate easier and sooner than a non vented canopy.

Most of the replies are pretty parallel to my preliminary thoughts prior to this thread. Thanks guys!

One more thought....

If vents are pretty much superior in the majority of situations (including terminal deployments... "softer openings, etc), then ...

Why are they still offered as standard on _certain_ models, instead of vents being the standard, in which case you must request to _not_ have them (when ordering custom gear of course)??

If price is the only factor, then I understand. (For those primarily doing big walls and such)

But are there any other reasons?

<3 Lindsay

What would your mom think of you BASE jumping missy?

............ and for those of you who own both a vented and a non-vented canopy... what are the benefits of having that un-vented canopy, when you could just use your vented for terminal/ higher unstrikable objects? (assuming other possible desirable features of your canopies do not come into play here)

Two reasons:

1) Lower cost.
2) Lower pack volume.

Lower pack volume is actually something I've seen a few very experienced jumpers select non-vented canopies for (they were looking for a rig that would only be used for wingsuit and tracking flights from big walls with good landing areas).

how much bigger does one with vent pack as opposed to non vented? How much difference in a track would that make? super noticeable or marginal?

Thanks chris

i have 14 jumps on a dagger 222 non-vented canopy and i have a Black Jack 240 on order. i'll keep the dagger for terminal jumps cause i like a softer opening. but i also want to jump lower objects (<230), i'm playing off a faster opening with a higher wing loading hoping to balance things out. (this is theoretical at best)

Multiple loads I would use my vented for some jumps which I wouldn't use my unvented.

Marginal. The only people I know who are worried about it are very good trackers and wingsuit flyers who are pushing the envelope of human flight.

Well i used to have one of each then one fine day my azz met some train tracks on that fine unvented canopy. pressurization is definitaly slower without vents. Also I've seen a few videos of 180's striking e's and b's with vents the canopy still flys without well you seem to loose 1/3 of your canopy, which can make the difference of a few bruises to some brand new shiny steel in your femurs. Keep in mind this is while sliding down the wall. but hey who ever has a 180 that they can't get off the wall anyways.
Now i own all blackjacks

Guys,

If you are jumping a non-vented canopy you will die!

Get rid of them, NOW!

If you happen to jump a Mojo 240, please contact me and I'll make sure I properly dispose the canopy for you.

Seriously, contact me if you want to get rid of that old school Mojo 240.

also, if someone owns 280 Mojo and is going to burn it, dont do it, send it to me !! ...i might pay something for it, Maybe

dude

if you were jumping a vented canopy you might have cleared those trees....

*bites tongue*

TREE not trees, yes I was surrounded by trees by hit only one and then chopped two Actually a 17 year old young pilot and future BASE jumper chopped those down, so much for good ethics.

But that's exactly my point: vents = immortality so why play the Russian roulette with those Mojos 240s?

ws jumps or tracking jumps were you clear the object by a fair distance and has enough alti to open a slower canopy.

I have taken my part of unvented canopyes sub 400ft and im not doing it again unless its a waterlanding..

Vents just get them..

What he said.

I'm a heavier jumper and have freefallen my Ace310 from 220ft a bunch of times. It slams open just fine, but from then it can be prone to jellyfishing (pressure waves from nose to tail then back again) end cell closure, surging and diving and general funkiness. Below 250ft this can be interesting (sporting) cos you don't have too much time to get your shit together. Over 250ft i don't think it's too much of a problem.

Having jumped a Troll for a few jumps now, i have to say I am stunned at the difference vents and valves make. The canopy opens and it is solid. Ready to receive instructions (usually bad ones from me but that's a whole other thread).

The ACE i have used for a fair amount of slider up jumps (from 4secs to terminal) and to be blunt i love the way it opens. It rocks. Hasn't ever slammed me and the heading performance i find pretty tootin dependable (body position fuck ups aside).

Two very different beasts but i love them both equally.

ian

I have done some sub 180 feet static line or pca jumps with my ACE 260. My buddy who jumped the same objects used a vented flick. His had faster openings and always got a few feet more of canopy rides. I will get a vented canopy in a few weeks (black jack) for my low freefalls but I think I will not jump anything below 170 to 180 feet anyways. And like I said before, I feel good doing this jumps with my ACE.

Hi there, I´d like to ask: no user manual or some describing posts about canopies are talking about specific pressurization level for each canopy. Superiorly I red that vented are opening faster then non-vented, BUT not att all. There are some non-vented which pressurize much more better then vented ones. Why is that? thx alot