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I tried some stuff with the equations and the results are working out pretty interesting. My computation went as follows. First, I assume that air density and area do not change on a low altitude BASE jump, which is fairly reasonable. Then, I define my Cd' = A*r*Cd / 2 to be my new coefficient of drag, so that I don't have to worry about things that we depend linearly on that I assumed to be constant, to give a very simple equation for drag: D = Cd' * v^2 Note that I will use V for terminal velocity and v for arbitrary velocity. At terminal we have W = D => mg = Cd' * V^2 => Cd' = mg / V^2 Now, from Newton's Second Law: ma = mg - Cd' * v^2 = mg - (mg / V^2) * v^2, so dv/dt = g - (g v^2) / V^2 = g (1- v^2/V^2) Integrating both sides with respect to t gives: v = g (t - v^3/ (3*V^2)) Finally, solving for t gives: t = v/g + v^3 / (3*V^2) This equation gives me 23 seconds to reach 53.33 m/s with terminal velocity 53.33 m/s. This is not particularly surprising, since actually reaching the complete terminal velocity should take a long time. For v = 40 m/s with V = 53.33 m/s I get 11.6 seconds. Consider the protrack graph in this thread: http://www.dropzone.com/cgi-bin/forum/gforum.cgi?post=390101;search_string=protrack%20graph;#390101. The equation I derived predicts this graph with more than reasonable accuracy. Yes, I know that the poster is asking about inaccuracies in the graph Edited to add: 53.33 m/s = 120 mph. If you want to plug numbers into the above equation, you HAVE to do it in m/s because of the units of g. Here is a units converter. -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Custom ring tones piss me off. It's a phone, not a f*cking 5 speaker surround sound home theater system. I once heard Metallica's Enter Sandman as a ringtone on the bus -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

The joys of anonymity, huh? -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Definitely. If you're under a large-ish canopy, would these two still be as much of a problem? Clearly this would suck under a VX or something, but a 170? Also, the mals you are talking about, would that be more like a PC over the nose, or a lineover? I can see the lineover-like malfunction happening if the freebag bridle wraps around an outer cell tightly, but it sounds unlikely. That would definitely suck. Edited to add: Using a little more imagination, yeah, I can see lots of problems. It could wrap itself around line groups, get into your burble and start yanking around on random lines, maybe even cause random partial collapses. While doing this, it could beat you on the head really hard and knock you out. It could wrap itself around your risers/brakelines. Reserve bridles are long, it could even wrap itself around your controls and your reserve flaps, causing a double mal. I'm convinced, it's a stupid thing to try. -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Please don't take this the wrong way, but what are the problems with catching a reserve freebag while under canopy? People have repeatedly said that it can kill, and I do not doubt your experience but I am wondering how, since I cannot see any reasons beyond what was stated. I can see a problem if you "catch" it with your canopy fabric, and I can see the possibility of colliding with someone. Any other dangers? -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

After your seminar at Burnaby I read the book cover to cover. The overall presentation is perfect for the target audience. It presents what people need to know and doesn't present what people don't need to know. The philosophical stuff is more psychological than philosophical, and I think it's a good thing to see how the people who are accomplished in the discipline think. Getting the right thought patterns is most of the way to success in my experience. My only gripe is that spelling and minor grammar errors are abundant, and the typesetting could be a bit better. I will gladly edit it for you when I have time in a couple of weeks, if you want, at least for the spelling, since my grammar needs work anyway. We all know that if you ask ten people on a DZ the same question, you will get ten different answers. This book is the definitive settler of all such questions. Straight from the horse's mouth, so to speak (sorry Brian) I'm not implying that this book is the bible of canopy control, no such thing exists. The distinctive feature is that Brian explains why he comes to his conclusions, he doesn't just preach. Anyway, it was great. And attend his seminars if you can! -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

That really sucks. Heal fast! -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

They had a positive lasting influence on the world around them and were definitely great in their work. The discussion is rather futile since we have no definition of "great man". My post was mostly a question on whether artists are great men/women as well. -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

So what about John Lennon, for instance? Or Dostoevsky? They left a lasting positive impression. Both qualify, I think. Or Michelangelo. -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Which just goes to show that you can play hot potato with more than just a plain potato! -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Pink, tender and juicy? -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Baked potatoes can be very very hot. That is all -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

In the end, I think, history defines you as a great man or not. In this case, I must say that yes, a great scientist is a great man. Especially Gauss, holy crap batman was that guy smart -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Awesome -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Your God, in your religion, you mean. -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

So what makes a great man? -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

-- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Bush's ads do exactly what the comic describes. Isn't that also media? -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

I don't believe in God, at least not in the Christian (or any other denominational) God, but I try my damned (pardon the pun) best to live my life by that principle. You don't have to be religious to be good. Yes, I agree that the modern view of evolution is very very useful, but has some holes on the macro scale. The first living organism probably did not evolve from a rock. Also, with all our breeding, (I think that) we were still unable to breed a new species. There is also some micro-organism, some tentacle cleaning thingy or something, that is extremely complex and has no visible predecessor. However, without it not a single higher lifeform can exist. I'm sorry I don't remember the names and sources, but these arguments can be seen summarized in a good science-fiction book called "Calculating God". -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Hrm. Edited to add: the sentiments expressed in that article are touching, though I don't see any real point in them. -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

I've landed my old Triathlon 160 from 3/4 brakes. It was a pretty hard landing compared to a normal full flare, but not too bad. Definitely not bad enough to fracture anything. I've never had a problem sinking in under brakes, especially since I've had a problem flying approaches too tight. It worked for me on Mantas, weird intermediate canopies like Falcons and West Winds, Triathlons, Sabres, Safire 2's and Stilettos. Keep in mind that I only have a handful of jumps on any of those canopies and am not a great canopy pilot to begin with. Watch out with those rears. People have been hurt much worse than what you've experienced. In my experience, and from what I heard from Brian Germain last weekend, rears put in a lot of very sharp control. If your hand slips... Cue debate on practicing rear riser landings. Regardless of your opinion on that, I think that holding the rears down significantly for 200 feet on final is asking for trouble. More experienced opinion? -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Sorry, but I can tell you all about my PMATH664 Algebraic Geometry class Come on professor, lighten up. I'm not claiming to have invented anything, it's just an idle observation. -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

And his income was?... -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Don't rear risers typically flatten your glide? You must have been applying a lot of rears to sink, I guess. Is applying lots of rears more efficient than sinking with toggles? I guess it's more dangerous, since it requires significant input and rear risers near the ground are tricky. Is any of this right? -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.

Gack. Please see my response to billvon, the part about conditioning and gross oversimplification -- Toggle Whippin' Yahoo Skydiving is easy. All you have to do is relax while plummetting at 120 mph from 10,000' with nothing but some nylon and webbing to save you.