Quagmirian

Basik has 400, 600, 700 and 950 if that's any help.

Yep, thanks. I wanted to make some risers to go with my canopy, but my local grommet supplier does not make SS grommets. What about nickel plated brass grommets on sliders though? Why don't we do that?

Can I hijack this thread to ask whether nickel plated brass grommets are suitable for 3 ring risers?

Flat packing is still used in the UK quite a lot. Some clubs mandate it for static line or even all student kit.

It should look something like this: [inline HPIM45241.jpg] The toggle keeper can actually cause problems. At least once, I've seen someone set the brake above the guide ring. A setup like this makes that pretty damn difficult to not notice.

1/4 inch is the standard for binding and a lot of canopies

I haven't flown it yet, just kited it. I would ground launch it, but the winds aren't being very co-operative this time of year.

Trust me, I trying to get this canopy jumped as soon as possible. For now, you'll just have to look at these kiting pictures. [inline 511_small.jpg] [inline 512_small.jpg] [inline 514_small.jpg] [inline 515_small.jpg]

It's finished. I built the whole thing on my single needle. I'll see if I can kite it a bit today. Yes, I am still offering a cash/beer reward for jumping it. Earliest will probably be Friday, but I'll try and get some pictures and possibly a ground launch in by then. Also, what is an acceptable line tolerance for canopies of this type and size? [inline 503_small.jpg] [inline 504_small.jpg] [inline 507_small.jpg] [inline 508_small.jpg]

Sorry if it appears that way. None of us is out to shit in your sleeping bag here, honestly. We're simply pointing out possible problems with your setup. As long as you're aware of them, then that's alright.

I've finished all the main seams and I'm now working on the line attachments and lines. [inline ab_small.jpg] [inline ust_small.jpg] [inline tail_small.jpg]

It's exactly the sort of thing than could cause a spinning bag and funky openings.

Rigger please, here in freedom loving Yurop, we let children jump from as young as 16 or less.

But Roooooooooooob, that won't work if you have a decent toggle hood on your riser. I spotted one like that a few weekends ago.

I'm still slowly cracking on with construction. Should be finished and jumped within a few weeks (no promises). [inline end_cell_small.jpg]

I like the way they've turned the end cells into inflatable stabilisers. Very elegant solution.

Just in case you haven't already read it:

Yeah, I use two rows of straight stitch followed by a narrow zigzag, which from a strength perspective isn't ideal, but Dacron stretches much less than nylon, especially at a fingertrap, so I can't see it breaking any time soon. Thanks for the idea pchapman, instead of throwing away the old main container, I cut off the reserve and the reserve bottom flap, rebound it and ended up with a basic belly container. It looks quite nice to be honest. And just for future reference, freekflyguy is my Chief instructor and resident test dummy jumper. Before [inline chaser.png] After [inline belly_small.jpg]

The white retaining loop doesn't form such an efficient pulley as on the normal 3 ring, so release force goes up as much as 50% I think. Let me see if I can find the UPT study... Edit: gowlerk said it better.

The binding tape is the reinforcement. Older risers have 2 layers, newer ones have 3, which prevents a more obscure failure mode. It may not look like much, but type 3 tape has a strength of 525lbs, so even 2 layers adds about 700lbs of strength to the riser.

Bollocks! I know that's a simplification, but it's just not true. Taking the air as a frame of reference, the pilot chute is decelerating very rapidly indeed, but it's never going to stop, even with an unlimited bridle length.

Yes. It will remain in a state of rest until a force accelerates it. Chuck a pilot chute into a wind tunnel and it will fly up to the ceiling if it isn't attached to anything. In both cases, the same force is acting.

Drag. If you throw a pilot chute into a wind tunnel, it will drag even if it's not connected to a container. It will have its own terminal velocity.

I'm slowly cracking on with the sewing [inline rib_small.jpg]

They were done on my home machine. Two rows of straight stitch and a row of zigzag makes for a nice looking 'fake' bartack. Pure zigzag gets a bit crowded on my machine.