Low Freefall PC Throwing Techniques - SPLIT THREAD

[CrazyThomas]

i think if you calculate youll find that balon too small to pop your pins anyway...
hope its an out side climb or it could be a bitch to jump off an A

Faber,
Here are some numbers for the math exercises. Basically 4,000 balloons would definitely pop the pins/peel the velcro. Would pop the pins, lift the canopy to line stretch, and then continue to lift you upward. Well,......OK, maybe 5,000 balloons would be better for me...or 5 of those big 2.5m diameter balloons.

Lifting Math

I'm thinking about the bigger balloon. Something like a rising static line.


Thomas

[harris]

For very low jumps sub 200 ft. How much of a role does the closing system on your container play. Is there a preferred - velcro or pinned. I have not jumped below 350 ft. To jump at 200 ft. or less I do not feel confident that my pc would open my velcro at such a low airspeed without some serious pre jump peeling and prepping. Am I wrong. I only have 30 base jumps, so do not know all the parameters or limits to all the gear out there.

[sitflybaseboy]

We only do PCA or SL 200 and below. Hand held exit would be interesting from 200 or below.
321CYA
Sitflybaseboy

[Mac]

For very low jumps sub 200 ft. How much of a role does the closing system on your container play. Is there a preferred - velcro or pinned. I have not jumped below 350 ft. To jump at 200 ft. or less I do not feel confident that my pc would open my velcro at such a low airspeed without some serious pre jump peeling and prepping. Am I wrong. I only have 30 base jumps, so do not know all the parameters or limits to all the gear out there.

I have used my velcro rig with a 46" PC from 210ft without priming or peeling and found no real issue with it. I have also used my velcro and 42" PC from around 220ft without any issues (260 sized canopy and 1 sec freefall).
Below these altitudes I cant really comment, I would be happy to use these configurations down to 200ft, but would not freefall sub200 anyway. I now use a pin rig, but also wont freefall much below 250ft nowadays. My accident from freefalling 210ft changed my whole comfort level on lower(ish) end freefalls.

I am sure there are people out there with plenty of sub200 freefalling experience that could shed light on their prefered configurations.

[NightLee139]

I have used my velcro rig with a 46" PC from 210ft .... and 42" PC from around 220ft ........... but also wont freefall much below 250ft nowadays. My accident from freefalling 210ft changed my whole comfort level on lower(ish) end freefalls.

I am sure there are people out there with plenty of sub200 freefalling experience that could shed light on their prefered configurations.

Could you please tell me on what altitude you'd prefer go with 46" PC instead of 42"? Or with 48" istead of 46"? And i'll be happy if others post theirs opinions too.
My experience in freefalls below 300ft is really poor. But i'm really interesting in this question. For some education. The charts available on manufacturers' sites are different... and do not go to such altitudes you're disscusing here. So... could you post some actual info?

[Fabien]

I have used my velcro rig with a 46" PC from 210ft without priming or peeling and found no real issue with it. I have also used my velcro and 42" PC from around 220ft without any issues (260 sized canopy and 1 sec freefall).

I recently had a couple 180° on a 1 sec delay with a 42" PC, and lots of offheadings. I usually use a 48" for 0-2 sec delay. Don' t you think 42 is too small a PC for those delays, or do I have to think to another cause for those O/H?


Fab'

[Faber]

I recently had a couple 180° on a 1 sec delay with a 42" PC, and lots of offheadings. I usually use a 48" for 0-2 sec delay. Don' t you think 42 is too small a PC for those delays, or do I have to think to another cause for those O/H?


Fab'

1st i dont think you can blame the size on your pc whether if you get offheaddings or not,Av can do the dif but not the size

I wouldnt make thouse jumps as Mac did and im sure he wont either(but people from that area does this regulary)

Personaly i use my 42AV zp all the way down to 250ft were i start using my 46av zp which i has used for freefall as low as 180ft

I once used a 48 that were on a SL jump as a back up through

to the poster that wanted info on pc´s on ultralow stuff,pleace get current below 300ft before you gou ultralow(below 200ft in my world)...Its a different game down there

[NightLee139]

Personaly i use my 42AV zp all the way down to 250ft were i start using my 46av zp which i has used for freefall as low as 180ft
.......to the poster that wanted info on pc´s on ultralow stuff,pleace get current below 300ft before you gou ultralow(below 200ft in my world)...Its a different game down there

I know, Stefan.))) And i'm asking about it only for education purpose.
I use my 42AV ZP PC on 300ft.... my rare below-300 jumps were made with 46"... i prefer PCA below 200' and freefalled ~180' object just once. It's way too scare for me... so do not think i gonna jump some low stuff as soon as i'll get the answers.)))) Just curiosity.)))


Lika))))

[Mac]

I recently had a couple 180° on a 1 sec delay with a 42" PC, and lots of offheadings. I usually use a 48" for 0-2 sec delay. Don' t you think 42 is too small a PC for those delays, or do I have to think to another cause for those O/H?


Fab'

I actually beleive that a 42 is more consistant in intial inflation and thus more reliable in the 1 sec delay region. Although I have taken a 42 toward the 200ft range, I normally prefer a 46 but would have no hesitation in taking a 42 for the jumps I have done in this range. My normal "weapon of choice" is

0-0.5 sec - 46
0.5 - 3 sec - 42

This is dependant on exit height and canopy size, and I am now jumping a 280 canopy rather than a 260 and also a pin rig rather than a velcro and I have not done any testing really on my new config.

I have done some analysis of my jumps and offheading rates (on my 260 and velcro rig), and I have an equal off heading (0-90) on both 42AV v 46 in the 0 - 2 second range, but I put this down to other issues. I have only had 1 180 off heading and this was with a 46 with 1 sec delay and a reasonable wind right on my back on a guyed A from 315ft. All the jumps I have had over a 90 off heading have all been on 0-1+ sec delays with a 46 non vented.

Is your 42 vented? and what winds are you jumping in with your off headings? Also I beleive certain containers encourage offheadings with certain winds and/or bad body postion due to a very deep bottom of the container.........

maybe thats just me though.............

Michael

[Mac]

Could you please tell me on what altitude you'd prefer go with 46" PC instead of 42"? Or with 48" istead of 46"? And i'll be happy if others post theirs opinions too.
My experience in freefalls below 300ft is really poor. But i'm really interesting in this question. For some education. The charts available on manufacturers' sites are different... and do not go to such altitudes you're disscusing here. So... could you post some actual info?

Hopefully my post below answers some of your questions. (no doubt it causes more with my terrible writing style! ) )

As for a 48" v 46" - with my size canopy or container (265MDV with pins) and my lower level limit for freefall (or should I say previous level of 200ft) I dont beleive I ever had a need for a 48. I would have be happy with a 46 down to 200ft. I dont know anything about freefalling sub200 other than theory on best practice so I can not say what I prefer.

and of course, this is all only a statement of my experience and personal thought and in no way a statement of what is correct or best practice.

[NightLee139]

...and of course, this is all only a statement of my experience and personal thought and in no way a statement of what is correct or best practice.

Thank you. And thanks to Faber. I really need your personal thoghts to compare and complete mine with. )))
And now i'm trying to figure out that PC set i need for my jumps (sizes, vents...).

[Fabien]

Is your 42 vented? and what winds are you jumping in with your off headings? Also I beleive certain containers encourage offheadings with certain winds and/or bad body postion due to a very deep bottom of the container.........

maybe thats just me though.............

Michael

Non vented F111 42" PC, with handle. I use it stowed/HH according to the object/planned delay.

My 2 180° occured with a reactor 4 harness, non vented FoX 265. One hand held with little wind from rear right ( 180° to the right), the other one stowed, I think the wind was from the back, but not much.

Both of them after a 1 sec delay at 300 ft. I had a few other, but in very different conditions ( slider up, 38" ZP NV PC, etc...).

Reading you and Faber, I guess I have to look for other reasons. ???.


Thank you for your answers

Fab'