GoneCodFishing

Awesome thanks. Another user pm'd me sugesting the same. I had been looking for white sharpies but the actual brand (sharpie) don't make them, as apparently they can't get white pigment to work properly, and the ones i tried weren't good enough for the job. Cheers

No, chalk doesn't work. The coating seems to be too slick for chalk to mark, and i tried anything form taylors chalk to bogstandard blackboard chalk.

Need to do loads of marking on black PU coated ripstop which also has a DWR coating on it on the outside, and so far nothing i tried leaves a usable mark, which needs to be reasonably narrow as i have to transfer templates, and durable enough to stay in while cutting and sewing multiple layers. I could live with it being permanent if it can't be avoided, but even grease pencils fail to so much as draw a line on it Any tips on what you guys use?

I hope you got some body armour at the ready! Publicly criticising something Squirrel makes has the same response from the Squirrel fanboys as it would saying something bad about Justin Bieber in front of a group of 12 year old girls If you are quick you may be able to get one of these priority dispatch http://www.dog-training-equipment-store.com/index.php?main_page=product_info&cPath=10&products_id=677 The Gods take care of your soul!

But the bag does rotate... When i upsized wingsuit i started having openings that felt perfectly normal, but on looking up i'd have a full twist or 2 in the lines. It wasn't me rotating round the canopy, or the canopy rotating around me. So i put a camera facing backwards and there it was. The PC would ride my burble oscillating in one or 2 big circles before line stretch, and the bag followed, so by canopy extraction i already had a twist or 2. Would a snatch prevent that? No idea, i don't have one, but some people seem to claim it does.

I pretty much stopped paying attention after that

I used their European shop a number of times and found them to be very good. Good communication, prompt response to e-mails, and a fast service. The one time i was sent one wrong item part of a biggish order (shit happens) they were quick to offer to send a replacement and reimburse me shipping costs. I can't vouch directly for their American branch, but one of my orders had to have some items transferred from the US shop to their European one before being sent to me and that was processed faster than quoted and i was kept informed every step of the way.

Looking at the catalogue's page 12, it looks like both the frame buckles and slideblocs should work, but i just picked up that you are looking at using a double layer of type 13, so you may want to contact the distributor/manufacturer to get an actual measurement of the channel to make sure it'll fit. FWIW, it looks like they do a buckle version 'stretch' which seems to have more room for thicker webbing. A KN is mass(kg) x gravity(9.8m/s2), so a rough aproximation is KN/10 gives you kgs, (i.e. 18kn = 18000n = 1800kg) So you just convert those kgs to lbs. The figures given in the catalogue are MBS. They can be ordered with a MBS of 9kn (2000lbs) or 18kn (4000lbs) If a manufacturer of hardware give a SWL it usually is 1/5th of the MBS ETA: Just seen your edit, so the H5066 is the 9kn version of the buckle. Noticed in the backpage of that catalogue their american distributor is in Canada, so you can easily get in touch with them toget exactly what you need

Can't help with American manufacturers, but in Europe Austrialpin do a full range i.e http://www.austrialpin.net/products/military/framebuckles.ASP And catalogue http://downloads.austrialpin.at/cobra.pdf

Mechanical advantage. Each ring reduces the forces transferred higher up, so that at the loop end the forces are so small that pulling the cable through is relatively easy. With 2 rings you may not be strong enough to pull it through.

I downloaded the grid to have a look, and if it's the same you downloaded (from here http://ipc-judging.org.uk/ws/wingsuit.html ) then the problem is obvious. Some genius saved the grid file in jpg, which is a format that doesn't save transparency... If you want to see just the grid overlayed on top of the formation's photo you have a few options. - In the layer's palette, where the blending mode says "normal", change that to either "color burn" or "linear burn", depending on the background colors. You can also change to "divide", which will change the color of the grid, but may make it more visible. - Your other option is to make it transparent yourself. Open the grid layer only. Select the magic eraser (right click on the eraser tool to select it from a dropdown menu), remove the tick in the top toolbar that says "contiguous". (The default tolerance worked for me, it came up set as "32"), and click in the white background. All the white should have been removed. The grid is barely visible as it is, so go to image-adjustments-levels, and crank up the slider at "input levels". I brought the leftmost slider which was set at "0" up to "200" and that did the trick. Save as "png" format for future use. (I can't attach it as there's a 1mb limit))

Very nice

The graph shows actual speed - not average speed. Uh my bad. The legend that says the red line is "avg speed" got me confused.

There's this vid of one of his runs where he gets 589. https://www.youtube.com/watch?v=BJN53p1NvNA I calculated accelerations by sections and his max acceleration is around 8m/s2 for 3 seconds when at around 500km/h, which though seems strange as the acceleration should slow down the higher the speed, it is still below G. I think with that graph being average speed, is it possible that the average speed increases faster than the speed itself? I mean, if you accelerate from 400 to 500, the moment you hit 500 your avg will be lets say 450. If you keep doing 500 or more your average speed could very quickly shoot up till it gets close to your actual real-time speed. Makes sense? Any maths guy fancy putting that in numbers?

That's weird... In hot days your vertical speed should be higher as the air will have lower density. Thermal activity wouldn't account for it at 4000ft+ unless you are flying along a major highway or somesuch, since at that height the column would have arranged itself into a rather narrow shaft and there would be the corresponding downdrafts surrounding it which would nullify any effects.

Just use the latest flysight viewer and use the automatic wind adjustments. Amazingly effective when you learn some basic tricks.

Whereas if we were talking Fahrenheit it's cristal clear when you say 90.5 against 90.86?

Ahem... https://en.wikipedia.org/wiki/Apollo_Guidance_Computer All calculations and data storage were in metric apparently

Don't die

It's a nitron 135

Need a little help here. Anyone knows how PA measure the lines for the trim specs (where from/to) and what loads they apply for HMA? Need to reline a canopy, and despite a few e-mails going as far back as January i still had no reply from them. I tested a couple of lines and the measured length does not differ between applying 15 and 25 lbs, so the load seems right without having to go any higher, however the measured length of the 'old' lines seems to be 1cm shorter than trim spec in all of them... Any ideas?

I have a similar problem, and found that your body/brain is very good at compensating for any body assimetries in order to learn to fly stable. It takes a little longer to feel comfortable so to speak, and the first few jumps on a new suit are spent being rather wobbly trying to work out what or where to compensate, but after several jumps it all becomes natural and you can fly the suit normally without thinking. It is obviously more important to start the ws progression from the bottom up and take your time on each suit size again from the beginning, and although the progression pace may be a bit frustrating sometimes when compared to "normal" people when they jump a suit for the same time and boast about how easy it is to fly, with a bit of perseverance you can fly any suit on the market no problem.

Anyone know wha the winds aloft were on the jump?

Nought to do with the us PARACHUTING associations if he doesn't have a parachute, is it?

What on earth is IC1?