New Javelin Owner's Manual

[Hooknswoop 19]

A few highlights:

"In October 2001, the Javelin harness/container was retested in accordance with AS-8015B and is approved under TSO C-23d for: a maximum operating weight of 300 lbs and a maximum operating speed of 170 knots (198 mph or 330 kph)"

The instructions for velcro-less toggles show leaving the excess steering line flapping in the breeze.

"Cock the Kill Line Pilot Chute before placing the canopy in the main bag!"

"SUN PATH HIGHLY RECOMMENDS THE "PRO PACK" FOR ALL RAM-AIR RESERVES PACKED INTO THE JAVELIN HARNESS/CONTAINER SYSTEM."

"Suggested loop length for cypres [loop] closing after setting & stretching to be 2 1/8" "

5 pages covering the 3-ring operation and maintenance.

"Sun Path does not recommend the use of "Reverse Risers" on Javelin Harness and Containers"

Hook

[bmcd308 0]

Call me a dumbass, but what are "reverse risers?"

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www.jumpelvis.com

[AggieDave 6]

Just what it sounds like, the risers are designed to be backwards, 3-rings inwards. An "innovation" in gear from a few years back that really was pretty worthless.

--"When I die, may I be surrounded by scattered chrome and burning gasoline."

[SkydiveMonkey 0]

Not totally - some people like the looks of em plus they don't have a hole in the middle of them

____________________
Say no to subliminal messages

[grega 0]

i think that reverse risers are risers that have 3-ring assembled in that way, that when canopy is packed, risers are covering 3-ring, otherwise riser is on the bottom and 3-ring is on the riser. When canopy is packed, at reverse risers you can't see the 3-ring, you have to move a riser a bit and look behind a riser.
if i am assuming correctly

"George just lucky i guess!"

[geanky 0]

It was something used in Europe a couple of years back. The proposed benefits where that when packing the rig your rings would not be dragged across the ground and possibly affecting their function because of kinks, impact on rings, etc. One downfall was that it was not easily visible if they were assembled correctly and supposedly they had a possibility of not disengaging in a cut-away.

learn to fly in 3d

[PhreeZone 20]

Reversed or intergerty risers were created to battle the problem on some early mini risers to snap at the grommet. They are designed with no hole in the middle of the riser. The problems associated with breaking risers was fixed by adding type 9 (i think ???) webbing to the construction of newer risers. They were popular in Europe but have a following in the States too.

Both designs work well for releasing a mal'd canopy.

Yesterday is history
And tomorrow is a mystery

Parachutemanuals.com

[billbooth 10]

Reversed risers are 3 ring risers where the riser rings face the jumpers body, instead of facing away as they do on normal risers.

In a misguided attempt to make type 17 (mini) 3 ring risers stronger, the French eliminated the grommet that passes through the riser, thinking this was a weak point. They then put the "0" grommet for the closing loop to go through on a floppy 1" tab. Then, so that the 3-ring housings wouldn't have to come around to the front, flipped the riser over so that the riser rings faced the jumper's shoulders

There are three problems with this approach. 1. Risers don't break at the grommet. They break where they go around the harness ring. 2. The closing loop on reversed risers does not make the 180 degree direction change it does on properly built risers, so the release force is doubled, and the "suck through" or "jamming" force is cut in half. 3. For a 3 rings to release, they must flip through each other. Since a bag lock might not stand you up enough to pull the risers away from your body, reversed risers might not release in that situation, because your body blocks the flip through motion.

[Hooknswoop 19]

Quote

Both designs work well for releasing a mal'd canopy.

Except reverse risers don't release well in a high speed mal where the jumper is still belly to earth, because the rings push against the reserve risers/harness/jumpers' shoulders and can't flip through.

The problem of mini-risers breaking was resolved w/ re-inforcing, like Phree said.

Hook

[nacmacfeegle 0]

Believe it or not Bill, we still see a fair few of risers set up like this in Europe......

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He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me. Thomas Jefferson

[diverdriver 5]

Quote

Reversed or intergerty risers were created to battle the problem on some early mini risers to snap at the grommet. They are designed with no hole in the middle of the riser. The problems associated with breaking risers was fixed by adding type 9 (i think ???) webbing to the construction of newer risers. They were popular in Europe but have a following in the States too.

Both designs work well for releasing a mal'd canopy.

Phree, do you want your riser to break in a hard opening or your harness? Think about it. You need to make your risers just a bit weaker than your harness so that the load does not transmit to the harness completely thus destroying it in an overload.

And then there is the backlock problem with reverse risers.

I think it's been shown why reverse risers are not as good an idea as they were first thought to be. And I too have seen someone recently with reverse risers. Tried to recommend him getting rid of it. He didn't seem convinced.

Chris

[gus 1]

Cynics have suggested that PDF invented reversed risers to avoid having to pay to use the 'standard' 3 ring system. Cheeky buggars that they are!

Gus

OutpatientsOnline.com

[Remster 30]

Quote

Cynics have suggested to pay to use the 'standard' 3 ring system.

Obviously, these are uneducated cynics since Bill did not patent the 3 ring system to allow everyone to use it (if I remember correctly), but then Bill is there to correct me if i'm wrong...

Remster

[riggermick 7]

Phree, do you want your riser to break in a hard opening or your harness? Think about it. You need to make your risers just a bit weaker than your harness so that the load does not transmit to the harness completely thus destroying it in an overload.

Your harness is not going to catastrophically fail during a very hard opening. The worst that's going to happen is a couple of stitches may pop at the lower joints depending on the design of the harness. Most modern harness have been designed with the type of joints that won't allow this type of stitch failure. Joint types with a 3" length four point pattern using 40lb thread (found on most harneses) have a strength of approximately 5400 lb's (twice the rated load of of cadmium plated steel RW 8 base rings and some other common hardware). This doesn't mean the hardware will come apart at it's rated load but it will start to deform. Harnesses are over built to withstand opening shocks that the human body can't. Your risers or lines will fail long before your harness ever will. Don't be afraid or your harness, it's designed to withstand things you cannot.

Mick Cottle.

[riggermick 7]

[


Obviously, these are uneducated cynics since Bill did not patent the 3 ring system to allow everyone to use it

Wrong!!!!!! six bucks a copy (per rig) $1.00 for each ring used. The patent has since expired so it's now free to all.
By the way six bucks per copy is a very small fee to pay for such a remarkable invention. Gotta love capitalisim.

Mick Cottle.

[diverdriver 5]

Thank you Mick.

Chris

[Bruno 0]

In europe you see a lot of PDF rigs, so reverse risers are common.
I made some tests in a suspended harness overcharging at 3 G. the pull force was horribly hi, also on 5 different risers, doing identical test, the pull force was very different, meanings that the risers (all from PDF) aren't built in a standard way.
I removed reverse risers and throw them away.
Bruno

[christoofar 0]

Quote

Not totally - some people like the looks of em plus they don't have a hole in the middle of them

Reverse risers have been shown to take somewhat more force to seperate than the plain old minis everyone has.

____________________________________________________________
I'm RICK JAMES! Fo shizzle.

[billbooth 10]

As I said above, by their very design (leaving out the 180 degree change in direction of the white closing loop) reversed risers require TWICE the pull force to release. This is very bad if you have a high "G" spinning malfunction.

[skyedivr 0]

ok......does anyone want to buy some "integrity risers"?
do you think they would release if used as a belt?

my power is beyond your understanding.