robibird

Members
  • Content

    371
  • Joined

  • Last visited

  • Feedback

    0%

Everything posted by robibird

  1. Man Bird, check your personal e-mail RoBi Robert Pecnik [email protected] www.phoenix-fly.com
  2. Hi Blair, Was so much fun!! Six of us were there. It took us 3 hour hike for first jump and two for second. We were lucky cause on second we just made jump one minute before clouds come there and close the spot for the rest of the day. Stane ( Troll guy ) did nice 18 sec delay, tracking and I did 1'13'' W/S flight ( not 1'18''- this was SMS comunication mistake ) ....next time I'll try to reach the Grimelwald
  3. Valves: Valves and the half way covered nose of the canpoies were made by grman and austrian paraglider designers during late '80. this stuff were well known in paragliding back then for years before some of the skydiving canopy desigeners incorporate those ideas robi Robert Pecnik [email protected] www.phoenix-fly.com
  4. Hi guys, I need to say few things regarding the inlets, pressurization, wing inflation and rigid ribs wings. All in order to move the focus of the W/S flyers to the things which are more important for successful lights. Inlets: The size of inlets are designed on the suit so that they ensure quick inflation. As soon the wing has the profile and good angle of attack air will start flow around the wing creating the lift. Also wing which is inflated will make less drag which all void to better glide. I need to say that the size of the inlet ( mash) needed for quick wing inflation is determent in BM suit by three factors: a. quick enough inflation ( proper placing ) b. technically easy to make c. nice design To ensure inflation you can put ONE hole in size of the cigarette(diameter). Believe me, the wing will inflate fast. No difference if the inlet is big as on S-3 or has the one hole of cigarette size, once you are out of the plane your wings will work same. ( many of you notice that the butt deflector has small inlet, but the inflation has same speed like the arm and leg wings) Shape of our wings which looks like air profile in the sky are not like that only because of air coming through inlets and inflate the wings. Wings has air profile shape because the air travel around the wings and as long the wing has proper angle of attack the pressure difference between upper and lower part hold the shape of our wings. Also, even if we have the rigid wing ( no pressure subject ) we will not start fly before we get the speed beyond the stall speed. Each body has different stall speed, mainly depends on your weight..means that the heavier jumper will star flying later than light regardless how good he flyes. To make clear....The shape of the wings and the size of them will not help your body to start sooner to fly as long your body hasn't meet the stall speed. (.no need to go more in to aerodynamics details) Rigid wings ( Mylar ) Mylar will not help you either to start fly faster on the beginning! It will help once you start flying ( after you get beyond Your Sall Speed ) . How the mylar helps?! Mylar keep the profile more firm and steady, which produce less vibrations especially of the trailing edge. Also with mylar we can play more precise, making the profile which will hold the same shape in the sky, distortion free let say... Important: Guys to ensure the good fly you better put attention to all the details which may cause additional drag!!! Heavy clotting under the suit ( stash bag on your bally under the suit), heavy gloves, open zippers, stuff like Video camera on your helmet, to big helmet, bad body position.. etc. I hope you understand what I said. :)) Regards to all W/S flyers Robert Robert Pecnik [email protected] www.phoenix-fly.com
  5. Hi guys, I need to say few things regarding the inlets, pressurization, wing inflation and rigid ribs wings. All in order to move the focus of the W/S flyers to the things which are more important for successful lights. Inlets: The size of inlets are designed on the suit so that they ensure quick inflation. As soon the wing has the profile and good angle of attack air will start flow around the wing creating the lift. Also wing which is inflated will make less drag which all void to better glide. I need to say that the size of the inlet ( mash) needed for quick wing inflation is determent in BM suit by three factors: a. quick enough inflation ( proper placing ) b. technically easy to make c. nice design To ensure inflation you can put ONE hole in size of the cigarette(diameter). Believe me, the wing will inflate fast. No difference if the inlet is big as on S-3 or has the one hole of cigarette size, once you are out of the plane your wings will work same. ( many of you notice that the butt deflector has small inlet, but the inflation has same speed like the arm and leg wings) Shape of our wings which looks like air profile in the sky are not like that only because of air coming through inlets and inflate the wings. Wings has air profile shape because the air travel around the wings and as long the wing has proper angle of attack the pressure difference between upper and lower part hold the shape of our wings. Also, even if we have the rigid wing ( no pressure subject ) we will not start fly before we get the speed beyond the stall speed. Each body has different stall speed, mainly depends on your weight..means that the heavier jumper will star flying later than light regardless how good he flyes. To make clear....The shape of the wings and the size of them will not help your body to start sooner to fly as long your body hasn't meet the stall speed. (.no need to go more in to aerodynamics details) Rigid wings ( Mylar ) Mylar will not help you either to start fly faster on the beginning! It will help once you start flying ( after you get beyond Your Sall Speed ) . How the mylar helps?! Mylar keep the profile more firm and steady, which produce less vibrations especially of the trailing edge. Also with mylar we can play more precise, making the profile which will hold the same shape in the sky, distortion free let say... Important: Guys to ensure the good fly you better put attention to all the details which may cause additional drag!!! Heavy clotting under the suit ( stash bag on your bally under the suit), heavy gloves, open zippers, stuff like Video camera on your helmet, to big helmet, bad body position.. etc. I hope you understand what I said. :)) Regards to all W/S flyers Robert Robert Pecnik [email protected] www.phoenix-fly.com
  6. Hi guys, Here is what I can say about this: PC was originally made for BASE activities. Idea was to ensure easyer axces to PC Of course you can use it on skydiving as well. If you do so than you'll face the problem of the size of PC pouch. It is very hard to make the pouch which will suit the 24'' and 38'' in the correct way. I hope you'll agree w me about this. ( to ask rigger to make the pouch smaller is one of the good options you may take) Second, Shrivel is made bit longer cause I can't really cover all types of the rigs and lengths of containers. Also this is not the problem cause if you find that the shrivel is to long ( longer than velcro on the pouch) the part which is out of male side you just place in the PC pouch.( also, me personaly use the longer shrevel part to reinforce the fiting of the PC in the pouch.) I'll make the picture and will send it to you. It is important to make attachment between the bridle and shrivel w one barttack too. Attachment has to be made on the upper part ( the side which void to the pin) so that after you stretch the bridle, bridle has th freedom to peel from the velcro of the PC pouch completly before its start to pull the pin or velcro from the base /skydiving rig. picture will explain better. Sincerely Robi Robert Pecnik [email protected] www.phoenix-fly.com