gaz511

Dispite all the hype, the Peregrine isn't really a Petra copy. Petra in my opinion simply lead PD to accelerate R&D on an existing project. Dispite that at first glance they appear similar, If you look closer at the 2 wings you'll see they are very different. The only thing they share is the schuman planform i.e an elliptical leading edge. The rest of their planforms are not the same. It's unfair to accuse PD of copying the Petra, they used a planform that the petra also used and lets face it.... Icarus did not invent the idea of an elliptical leading edge, it's been around since the 80's since it was conceived by Mr Schuman and gets used lots on paragliders and speed wings. Did Icarus copy the Velo when they made JVX? probably not but because it has x-braces you could say they did, but did they get all the criticism PD seem to be getting over the Peregrine vs Petra? Doubt it.

Someone correct me if i'm wrong. It depends on the event. Power events like speed or distance the top guys are now on Petra's or Peregrine's loading up to around 3! Zone acc they are on VC's and JVX loaded lower so they can stop them, probably around 2.2 + Look at Dubai last year though, Curt won with a VC whilst some had the PD "Prototype" which evolved into the Peregrine. The wing and loading that works is the wing and loading that the pilot can get consistently on the gates safely like Ian said. The right combination of Pilot, Wing and Loading is the wining formula, that and an element of luck, a bad day or an unfortunate wind can spoil any pilots competition. There's no point having the fastest wing if you can't score with it!

I have just got myself a VISO II as a second digital alti for swoop training, i intend to use it as a vertical speed indicator and i'm aware that i can play back a canopy flight after each jump to evaluate my vertical speed during various phases of my rotation. Here's the question: If i set the Viso to be an Alti instead of Speed will it still re-play my vertical speed as before or will it only re-play the altitude values? In an ideal world i'd like to use it as a 2nd alti should my hip mounted one fail in flight or if i can't see it spinning twists, malfunctions etc. I still want to have access to real time vertical speeds for play back and not just the maximum canopy speed snapshots that you can get

I've heard that there is a new Jvx coming out or even already released, i'm not talking about Petra. Does anyone know about this or even have one?

My understanding is that they are always improving it so they may have changed a few subtle things in it's design but chances are only PD and a select few actually know what those differences are. I had an inital hard snatch on my velo for several jumps when i got it but finally sorted it out. I'm most likely gonna say stuff you already know or have tried but you never know, it may be of help..... What size is your pilotchute? and is it zp or f111. That may be partly to blame as an oversized one will decellerate the D-Bag off your back at such a rate it's gonna snatch hard, also try putting a few extra rolls on the tail and make sure the slider is up against the stops before bagging the canopy. . There are other things to like riser tuck tabs on your container which can cause hard openings which is why UPT make magnetic ones.

The riser stall occurs when you exceed the critical AoA, this can occur at high speed or low speed, it's simply when you've pulled the tail down so much that you no longer have a wing, its more or an airbrake instead. Just like putting you hand out the window of a speeding car and change the angle of your hand, you can use the angle to create lift but at a certain point you'll change the angle so much that the wind no longer forces your hand up and instead it looses lift get gets blown backwards. The toggle stall is pretty much a combination of what you've said, basically you've slowed down your "ram air" wing so much that it's no longer creating lift, but also there is little or no ram air, so the wing will loose shape and eventually collapse, the wing tips bend back and touch because the brakes (bend down fabric) cause drag and pull the trailing edge tips back. Even at speed if you pull your toggles the brakes are applying a force to the trailing edge tips, but they don't bend backwards because that force is opposed by the pressure in the wing from the ram air/forward speed. The only thing you got wrong was the bit about head wind. A head wind would only make a difference if you were stationary on the ground. In flight, essentially there is no wind, i say this because you are travelling through it like a boat in a river, you canopy will fly at the same speeds it always does regardless of headwind/downwind etc, it's only your ground speed that changes. Lots of people struggle with this concept, but use the river idea, you are in the river getting pused by the flow and the river bank is the ground/intended landing area, no mateer how fast you boat travels it's always being pushed a certain direction by the flow, so if you face into the flow travelling at 20kts and the flow is 20kts, then the result is you aren't moving forward along the river bank, but your still doing 20kts!

practice leaning forward whilst doing your turn and plaining out at altitude, you'll soon get used to it, you can lean much further forward once you've let go of the riser onto brakes as your sholder joint has it's limits. Get used to leaning on your chest strap too, you soon learn to trust it especially if it's loose and you don't feel it until you think your about to fall out. Soon you'll be leaning so far foward you'll want a longer strap or doing shit like this where trusting your chest strap is pretty much a must http://www.youtube.com/watch?v=yl-XsUF0C44