Re: [fab777] technical question on canopies
After a recent discussion with a gear manufacturer, I think I can put in my $0.02 on this question.
The best canopy for low jumps is also dependent on the physical size of the canopy. A canopy on the largest end will weight more and have longer lines than a canopy on the small end. The weight difference will affect how quickly it opens - given the same airespeed and same size of PC. The extra nylon will also increase the time it takes to get it flying.
In otherwords, my FLiK 322 will take a greater snatch force to open than my buddy's FLiK 220 (given the same size PC and airspeed). Thus, I'd have to step up a size in PC or get more airspeed. (On a low jump, it's obvious which is safer!) I definately know that my buddy's freefall jump will be my PCA jump because my 322 takes just a bit longer to open and get flying. On a low jump, that 'just a bit' can be a killer.
So, what this means is, maybe stepping down a canopy size for low jumps could make openings better and faster. Or at least what I was told. Personally, I wouldn't step down a canopy size nor do I recommend it.
That's my $0.02 - let the bashing begin! (I'm very curious to see what others have to say about this.)
I also have the experience of jumping my UNVENTED FLiK 322 off a 230' object. That flight and subsequent landing caused a broken tailbone because the canopy wasn't fully pressurized and flying before I landed. Then I had the VTEC vents & valve covers added to my FLiK. I jumped the same object again using my newly VENTED FLiK 322 and the difference was amazing. I outflew everybody on my load and had a perfect landing. That's the difference the vents made in getting the canopy pressurized and flying faster. (Note: both jumps were PCA'd.)