base283

Once again, PC diameter has very little to do with drag. Construction and stability are THE major parameters. Though I do think diameter is more important than the color. In some of the incidents and accidents I investigated including one Fatality, 3 were caused IMHO by the type of construction of the PC. The diameters were appropiate for the delay if one went by the standards we go by. I am very knowledgeable on this subject. Ask around. Take care, space

No way, The manu can only cut the material in the specified diameter. Seam allowances and differing shinkage rates due to sewing (sewing a circle on square weave) would make it difficult to calculate an accurate finished diameter before you started sewing. Stability and Drag are more dependent on construction rather than diameter, and also more important. hope this helps. take care, space

It is standard in the industry to state the "cut size". You were measuring the "finished size".´Tis not an error. The difference you noted sounds right. take care, space

Yo Jase, be a diplomat please. don´t fark your self by dissing others. you are doing good stuff. keep it up. There is a link to fatalites on DZ com also. thinky, I am only trying to help. take care, space

Yo Jason, I tried to PM yu. on both boards. shoot me an email address please. take care, space

Hi Christel, Maybe this will help an understanding. If you jumped from a balloon with a gummieseil while wearing a parachute, it would not be a skydive. if you let the bungy land you safely. The parachute would only be cosmetic for photo or ego. hope this helps, take care my friend, space

To classify as a BASE jump, the parachute must be used to save your life. So the general rule of thumb would be that if you can survive it without a parachute, it aint BASE. take care, space

attached is a cool method shown to me by a rigger, but it´s for removing the cork that´s in the bottle. I´ve used this method many times in the wild. Take a clean dacron line, tie at least 3 figure 8 knots in it 3" apart. Stuff the 3 knots in the bottle alongside the cork and past. Pull the Dacron line. The top knot will pull the cork into the neck, the middle knot will catch the bottom edge of the cork and the last not acts as a reserve knot in case the middle slips. Voila!! Out comes the cork. try it! take care, space

I see very little sideways. It looks like maybe he has thrown it more down relative to the wind vector. Though forward from his body position. I can recreate similar to this by doing the same (Throwing down). take care, space

In which direction are you throwing the PC? I can´t tell from the foto, It does look like you just dropped it or threw on the same vector as the camera. Take care, space

Thanks guys, My firm is building some 2200 watt amplifiers for an American firm and the question arose. Take care, space

How many amps are the 110V Circuit breakers rated at (I´m looking for the Max) in the USA. Thanks in advance. take care, space

Although my first urge is to agree with you, I would agree with Marco. After seeing appx 5000 Big Wall (600mVert) BASE jumps. The norm for tracking is quite low in the segment that I saw jump from general skydiving although we had some wilders with low skydiving exp with what I would term extreme tracking abilities. Alot of this is due to tracking without a closeby ref such as a wall or another jumper. On a typical 4way fun RW jump, everyone tracks away from the others at breakoff for 5 secs, It´s not a very observational viewpoint from which to improve ones track. Relative tracking dives are the best way to learn tracking. These guys seem to know how to tweak their tracks with finess. The sport trend is definitely going the direction of horizontal separation. BASEr`s out track the gen.skydiving pop IMHO. take care, space

Loose wraps, that bothers me. so does doing a 4 slider up with a 36". I don´t know iffin it had anything to do with the LO, but I´da done it different. I wouldn´t feel comfy doing a 4 in that config. super neat packs seem to open freaky for some strange reason in my experience. take care, space

space wrote: "I've had the PC dropped, I've had the canopy jerked out and laid on the handrail.". These were my errors. when I started BASEing most of the errors had yet to be made. I don't understand what you mean by experienced. I really don't think it takes an Einstein to figure it out though (why PC's are reinforced in certain areas). Sorry if I am being anal. But your post would have been a great learning tip had you posted it that way. What are you trying to understand? that is not so clear. If one uses something in a way that it wasn't designed. things can happen in a way that wasn't desired. Interestingly enough, I only know of 2 injuries due to PCA, one was a broken arm from the PCAr, the other a broken leg from the jumper who opened too low after a dropped PC and could not avoid obstacles. Take care and once again my apologies for being anal about it. space

There is a lot I want to say about your reply. But I'll just stick to your response to 428 who was right on. What the heck were you doing letting someone who had no clue hold your PC? Why did you have no clue that he had no clue until the damage was done? There are loads of info on this very subject, yet you wish to try to push the responsibility on the manu' instead of manning up and and dealing with your lack of being responsible to your gear and yourself. You are the cause of this damage, 100%. deal with it. Do research next time. Or be a pioneer and post what happens when you do the things you do cluelessly. But of course the next jumper who has no clue and not willing to research will have the same outcome as you because he didn't research it either. Checking out your fotos confirms that all reinforcement stayed intact thereby confirming that the structural integrity of the PC was there. After criticizing you, I would like to point out that it is a very dangerous thing to let another PCA you. Them being on the edge of a vert can freak them and cause them to do that you did not teach them on the ground. I've had the PC dropped, I've had the canopy jerked out and laid on the handrail. One can train them 20 times on how to do it on the ground and then they get "Edge Stress Syndrome". IMHO, Go back in your PCA'r instruction to the assister and find out where YOU went wrong as the instructor and post it so the ones who research can have a well informed clue. this is your duty. take care, space

I take issue with you calling these jumps standard. Those types of jumps are exceptional. But in hindsight I realize that "standard" is only a perspective. I think it is really scary that such could be considered standard although I really enjoy a 45'er up my butt on the exit point every once in a great while but it aint my norm. (45mph i do mean :-) mebbie I aint extreme. Happy new bier! take care, space

If one has line twists upon opening, the issue "why" is the issue IMHO. Don't go there. I caint help ya once you are there. Assymetrical/lame PC or uncool position upon deployment, are the only causes for this. Deal with the cause. The climbing up the risers seems the only option (have fun) iffin one has not dealt with the factors I stated. I do speak from vast experience. take care, space

502 never said or implied that he was the first to jump it. That was only media spin. You know, the same media that misreports accidents and such. take care space

Right on, I was hesitant to post the same. I think it proves that lack of tracking makes for cool footage. The footage is awesome. I would be more impressed if they didn´t track on purpose. Not dissin you guys, but you guys got bigguns to be flyin that close to the wall take care, space

Thanksgivin is as useless as chicken lips without "Pickled Mudfish" take care, space

Hi AggieDave “keydeck posted; "Often these stories are nothing more than myth & legend but they still make for a good read.” Attention to detail is important for a skydiver. Or………. What is your take on reading comprehension? I covered my butt by posting the above. Take care, space

Posted by the notorious "keydeck" on another website http://www.toytownmunich.com . I like it . Thought you´d like it. keydeck posted; "Often these stories are nothing more than myth & legend but they still make for a good read. The following concerns a question in a physics degree exam at the University of Copenhagen: "Describe how to determine the height of a skyscraper with a barometer." One student replied: "You tie a long piece of string to the neck of the barometer, then lower the barometer from the roof of the skyscraper to the ground. The length of the string plus the length of the barometer will equal the height of the building." While the answer was original, it so incensed the examiner that the student was failed immediately. The student appealed on the grounds that his answer was indisputably correct, and the university appointed an independent arbiter to decide the case. The arbiter judged that the answer was indeed correct, but did not display any noticeable knowledge of physics. To resolve the problem it was decided to call the student in and allow him six minutes in which to provide a verbal answer which showed at least a minimal familiarity with the basic principles of physics. But for five minutes the student sat in silence, forehead creased in thought. The arbiter reminded him that time was running out, to which the student replied that he had several extrememly relevant answers, but couldn't make up his mind which to use. On being advised to hurry up the student replied as follows: "Firstly, you could take the barometer up to the roof of the skyscraper, drop it over the edge, and measure the time it takes to reach the ground. The height of the building can then be worked out from the formula H = .5g x t squared. But bad luck on the barometer. "Or, if the sun is shining, you could measure the height of the barometer, then set it on end and measure the length of its shadow. Then you measure the length of the skyscraper's shadow, and thereafter it is a simple matter of proportional arithmetic to work out the height of the skyscraper. "But if you wanted to be highly scientific about it, you could tie a short piece of string to the barometer and swing it like a pendulum, first at ground level and then on the roof of the skyscraper. The height is worked out by the difference in the gravitational restoring force T = 2*Pi*Sqrt[1/g]. "Or, if the skyscraper has an outside emergency staircase, one could walk up the staircase and mark off the height of the skyscraper in barometer lengths and then add them up. "If you merely wanted to be boring and orthodox about it, of course, you could use the barometer to measure the air pressure on the roof of the skyscraper and on the gound, and convert the difference in millibars into feet to give the height of the building. "But since we are constantly being exhorted to exercise independence of mind and apply scientific methods, undoubtedly the best way would be to knock on the janitor's door and say to him, 'If you would like a nice new barometer, I will give you this one if you will tell me the height of this skyscraper'." The student was Niels Bohr, Nobel Prize winning physicist." end of post. take care space end of post

Maybe that was me that came up with the 35mm canister. A cool tip is to keep it stocked with a few rubberbands so that it´s always handy during packing. take care, space

I think you should pin it at the top for a while. With the new fly clothing and techniques that been developed, FF times/distances have radically changed and jumpers would have more insight on the potentials of their setup relative to a certain site and their flying style. This is an opportune time for the scientists/engineers to get it together. take care, space