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non-vented canopy on a low DB jump?
has anyone jumped a non-vented canopy (mojo) on a low direct bag jump (104 feet)? does it take significantly more time to inflate? does it look like a stupid idea?
thanks for answering and nice jumps to everyone
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Re: [RiquierVincendeau] non-vented canopy on a low DB jump?
Well, I can tell you I have a lot of limping friends from the time we did not have any vented canopies. Your choice based on how much you love your ancles, hips, back, wrist etc!
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Re: [RiquierVincendeau] non-vented canopy on a low DB jump?
RiquierVincendeau wrote:
has anyone jumped a non-vented canopy (mojo) on a low direct bag jump (104 feet)?

Yes.


In reply to:
does it take significantly more time to inflate?

Yes.


In reply to:
does it look like a stupid idea?

There are much better options available today. Why use the old technology?
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Re: [RiquierVincendeau] non-vented canopy on a low DB jump?
180 ft pca is my lowest mojo flight...i wont go lower
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Re: [lowcountryBase] non-vented canopy on a low DB jump?
lowcountryBase wrote:
180 ft pca is my lowest mojo flight...i wont go lower

I have personally jumped 38m / 125ft (cliff) PCA'd into knee deep snow over frozen lake with unvented Troll. Also the same spot has been jumped by other jumpers with unvented Mojos and Daggers. Also I have PCA'd a friend from a 33m E (once again to roughly knee deep snow over frozen lake) with unvented Dagger, unvented ACE and unvented Troll. Of course, we have jumped those same objects multiple times with vented canopies as well.

Generally I can say couple of observations :
- Given a good landing area and good PCA, 38m works fine regardless of canopy design. Obviously vented canopy is preferable but you can get away with it with unvented as well (like we did).
- Going lower than that, what also starts to be a HUGE factor is not only the design of the canopy but the size of the canopy and the weight of the jumper. What we have noticed from the 33m E is that for example whereas 70kg jumper with 245 vented Troll can make a very clean standup landing with some flare as well a 90kg jumper with 285 Troll will pound in pretty hard with pretty much barely inflated canopy. The same goes obivously for nonvented canopies as well. Bigger canopy has longer lines and takes more time to inflate so don't jump everything your mate jumps, especially if your mate is 30kg lighter than you and jumps 3 sizes smaller canopy. Or if you do, do not expect the same time under canopy.
- Generally jumps in this range have very small margin built into them so I'd suggest to play this game with as good cards in your hand as you can get. That means good, clean and soft landing areas, good conditions, lot's of protective gear and (reasonably) small, vented canopies. Also good idea would be to work your way down towards this range and not just ask from the internet and go and huck something in the 120ft range. :) We jumped first quite a bit around 50-60m before going to the "below 40" jumps. Also these jumps (at least for me) are more kind of special jumps which you do not do every night, more like once a year for special occasion.

Have fun, don't bounce. Hope this help.
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Re: [RiquierVincendeau] non-vented canopy on a low DB jump?
90+ feet over a lake. It hurt.
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To: Maretus Re: Dirty L0W
Thank you for sharing from
your extensive background.
My limited experience agrees.

For example we recently did
back-2-back 1 second delays
from Wanda, 315' freestander.

Jumper 1: 185 pounds, Troll 285
Jumper 2: 165 pounds, Troll 265
Jumper 3: 145 pounds, Fox 245

All weights naked so add 20+ LBs
for clothes, boots, pads, and gear.
All three jumpers had big PC's and
nice vented canopies in good shape.

Videos from the landing are clearly
shows the openings were staggered
with #1 be the lowest, #3 being the
highest, and #2 right in the middle.

My casual study of physics suggests:
More weight = more force
More force = more inertia
More fabric = longer to inflate

Hence my lowest are:
180' B unpacked
190' A static line
200' A freefall
Because I am jumper #1 Cool
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Re: [GreenMachine] To: Maretus Re: Dirty L0W
thanks everyone for all your answers , i already had severals "low" jumps from 100 feet to 200 feet(direct bag, handheld ,pca )with vented and non-vented canopies, i just get a mojo 260( iam 73 kilos) in good condition for few euros and the closest spot from home is a 104 feet bridge with big(no big, hudge!) grassy perfectly soft landing area (even the earth under the high grass is very deep and soft) where i made about 10 jumps with a troll mdv(when i jump low stuffs like that iam always wearing full body armor, helmet, knee pads, impact shorts...)so i was wondering about testing the mojo there, actually it doesnt sound like the greatest idea of the year (sorry for the complicated message i tried to answer every replys i get from all of you)
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Re: [RiquierVincendeau] To: Maretus Re: Dirty L0W
Got video ? 100ft sounds damn scary low, nothing helps confidence more than watching somebody else do it successfully :)

tnx
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Well Said
VID666 typed:

100ft sounds damn scary low

nothing helps confidence more than

watching somebody else do it successfully :)

I agree and definitely want to see the video also.

Greeny's video of freefalling 143' looked insane!
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Re: [vid666] To: Maretus Re: Dirty L0W
vid666 wrote:
Got video ? 100ft sounds damn scary low, nothing helps confidence more than watching somebody else do it successfully :)

tnx

The cliff jumps starting about 2:30 down this https://www.facebook.com/....php?v=1394501375922 are from an exit which is laserd at 33m (109ft). That´s actually the 33m cliff I was referring to in my earlier post.

Fuck the Finns and the Arctic Circle Urban BASE Extreme Team! :)