skydiverek

Dealers, riggers --- could you price the below rig? My friend is selling it, and does not know what to aks for it. All components made by PISA: 1. 'Naro' container, DOM 1996, approx 1000 jumps 2. 'Sonic 150', DOM 1996 approx 1000 jumps, lines in good condition, but never changed 3. 'Tempo 150', DOM 1996, zero openings

From his wife, when he made jump number 35,000: "After a 14 hour day of looking through over 35,000 lines in the logbooks, here are the results for the number of Don Kellner's malfunctions, although I may have missed one since my eyes are starting to go crossed with this job. Hopefully this post will be coherent. A grand total of 19 malfunctions in over 35,000 jumps. When I list malfunction numbers, I am only referring to those canopy problem situations that warranted Don going to his reserve parachute. His first malfunction was on his 1937th jump, which was his first square parachute jump. He had done 1936 round parachute jumps and gone through 11 years in the sport prior to that without a malfunction. In the following 15 months he experienced a total of eight malfunctions as he test jumped the new square parachutes that were being developed. In 1980, he experienced a double malfunction with one of the first square reserves available. In 1990, he experienced a malfunction when jumping one of the first high performance parachute designs. I would like to think that the work that he and other pioneers in the sport did, allow the rest of us to enjoy the low rate of malfunctions that we see today."

Cut the other steering line, land with rears.

From gthe same article: "With an intact tympanic membrane, the increasing water pressure against the earplug and the decreasing volume of air between the plug and the tympanic membrane would have a tendency to drive the plug against the TM," Dekelboum said. "The increasing water pressure also could wedge the plug in the ear canal. If this occurs, there is risk of external ear barotrauma." I don't think skydiving would create such forces. BTW, I have read that the pressure difference between 0 ft and 13,000 ft of air is the same like between 0 ft and 10 ft of water. So, skydivers only "dive" in 10 feet of water, with the earplugs.

NRR-24 - quite low...

I have started jumping with earplugs. Here are the key things: - air pressure equalizes inside your head, not outside your head, so earplugs do not affect this process (as far as I know, there are no natural holes in the ear-drum for the air to pass thru) - please correct me if I am wrong. Watch the below video (disable AdBlock first, if you have one): http://video.about.com/pediatrics/Ear-Pressure.htm - buy the highest NRR rated ear-plugs (NRR33 is the highest one possible). BUT, not all NRR33 rated earplugs block the same amount of noise at DIFFERENT frequencies. I have done a lots of research the 'Moldex' disposable foam earplugs (used in NASCAR) are THE BEST. Check the dB table in the PDF for a given model: http://www.moldex.com/hearing-protection/foam-earplugs/ - do not reuse foam earplugs. 'One jump-one pair' will keep you away from ear infections - buy the CORDED version. That way, you can remove the earplugs from underneath the helmet, after the opening, by pulling the cord (tuck it neatly under the helmet for freefall). With earplugs removed under canopy, you will not be deaf during the canopy collisions and command exchange with another jumper ('you cutaway!', etc) - freefall noise is over 120 dB, airplane can be over 100 dB, Optima is 120 dB. On an average skydiving day you are exceeding your daily noise quota (measured in minutes) many, many times, permanently damaging your hearing - there is no cure for deafness (apart from hearing aids...), or for tinnitus (constant 'ringing in the ears') - set your Optima canopy alarms to Volume "1", and the far-most left pitch (if you take your earplugs out, under canopy) - once you fly the airplane and jump wearing the earplugs, you will not want to do it again without them. It is like jumping with and without goggles - you are less worn-out after the day of skydiving - you can actually hear people BETTER in the airplane (the 'bad' engine noise is canceled, and the human voice is filtered and passed thru - pretty neat, huh? :-) ) - read this whole thread: http://www.dropzone.com/cgi-bin/forum/gforum.cgi?do=post_view_flat;post=4059225;page=1;mh=-1;;sb=post_latest_reply;so=ASC

Who cares about this if it is cheaper ?

Would that be a TSO'ed part? Too heavy cap for instance would diminish reserve PC performance, for sure.

Is this the one?: Original test jumps: http://swoop.skydiveworld.com/c_article/by_the_numbers_1.htm Airtec response in Skydiving Magazine: http://www.cypres-usa.com/october_2003_skydiving_letter.pdf Never published response by the initial test jumper: http://swoop.skydiveworld.com/c_article/response_to_airtec.htm

Happened to PD Factory Team member in France, well before Adrian died. I am also a Cypres fan, but user 'USPA' is correct - they were clearly saying in their printed ads that it was IMPOSSIBLE to meet the firing parameters under an open canopy (they listed doing CRWs, downplanes, spirals, etc). They also used a quote of sth like "whatever you think of doing, CRWs, spirals, downplanes, Cypres will not fire." Read THIS: http://www.dropzone.com/cgi-bin/forum/gforum.cgi?post=4084655;search_string=impossible;#4084655

Here is Troy's video: http://www.youtube.com/watch?v=S3h-RVieE4Y

Incorrect. Indycar driver survived 214g. Key factor is the DURATION of Gs. You can survive 214g for a brief moment. You would not survive 20g for longer period of time. http://www.youtube.com/watch?v=aVpux5JxqEk

You should also calibrate it before each jump, or a least on each jump day (just like you do with yuour analog visual altimeter). The air pressure changes during the day. So, whenever you have to calibrate your analog visual altimeter (NOT Altitrack or Viso, which calibrate automatically), calibrate a Dytter too.

No auto-shut off on the original Dytter (not Pro-Dytter) All of the instruction you need is ON the Dytter itself. It is mechanical only device.

I think the photo was take with the rig empty at the facotry, or stuffend with some foam or sth.

Can you post a link to BOTH of these models?

Nice and slow - just the way I like it .

Better yet, put the latex gloves OVER your regural gloves - that way your palms will not sweat, and instead will create a nice (larger) bubble of warm air around your palms.

I think 'FreezrMK2' and 'Gas2' have the best peripherial vision.

EXPLENATION: http://www.dropzone.com/cgi-bin/forum/gforum.cgi?do=post_view_flat;post=2101957;page=1;mh=-1;;sb=post_latest_reply;so=ASC

This is soooo 2010 . How about Tandem ACRO Base ?

Are you using the elastic bands on your leg straps, close to the adapters?

No anymore! Stainless steel ones are actually lighter than brass (for about last 10 years). Read HERE: http://www.dropzone.com/cgi-bin/forum/gforum.cgi?post=808906;search_string=brass%20stainless;#808906

Watch this on the topic: http://www.youtube.com/watch?v=uh5hnkW2K-Q

Let's see this email, then.