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I'm about 270 out the door now. I deploy at speeds well above what the canopies are rated for on a regular basis. I currently jump a Cobalt that opens so hard that sometimes my video cuts out. I had a riser strike break the aluminum box my camera is mounted in. I've broken several steering lines. My monarch blew out 3 cells, bent hardware, and tore stitching out of the harness. I have not had an issue with risers breaking yet, but there's still time . When my Monarch exploded (3 cells blew out) I had the reversed mini risers with the 3 rings on the back of the riser to eliminate the grommet hole, maybe that's why I didn't break a riser on that one. I have pictures of the canopy damage on this site.
My momma said I could be anything I wanted when I grew up, so I became an a$$hole.
kkeenan 14
Kevin K.
Dude, you are so awesome...
Can I be on your ash jump ?
My momma said I could be anything I wanted when I grew up, so I became an a$$hole.
BUBLHED 0
Damn!!! Glad your not shorter now. I guess I'm safe with the minis, cool. Thanks to you all. I keep my gear checked religiously, until I grow wings that's all I've got.
Blue Skies
QuoteDamn!!! Glad your not shorter now. I guess I'm safe with the minis, cool. Thanks to you all. I keep my gear checked religiously, until I grow wings that's all I've got.
Blue Skies
Yes you do need to check them often. I'm a little paranoid since I have a RSL now. I also clean the cutaway cables once a month during the season.
My momma said I could be anything I wanted when I grew up, so I became an a$$hole.
d123 3
Is it possible that the loop or the cut away cable could brake before the risers?
From the mechanical advantage point of view I'm aware of the following models:
- Type8 risers with large rings (200 to 1 m.a.)
- mini force (unknown m.a. but better than mini risers)
- mini risers (30 to 1 m.a.)
- reverse mini risers (unknown m.a. but lower than mini risers due to a missing lever effect from the closing loop)
Is it possible that on the models with lower mechanical advantage, for the loop or the cut away cable to brake before the risers (even if the riser has a hole in it)?
BUBLHED 0
TonyJ 0
How did you calculate the m.a.? The guy I was talking to from UPT at Rantoul said the mini force advantage is crap. Virtually insignificant leverage advantage, but with a much greater chance of binding. I wish I still had my reversed mini risers, it's been a while since I've seen how they route the loop. I thought it comes straight off the riser instead of making the 180 bend.
My momma said I could be anything I wanted when I grew up, so I became an a$$hole.
QuoteParagear lists Type 2 nylon as 400 lbs. strength. I don't think you can double the strength just because the fingertrap has double the thickness, the loop is only single thickness. 2 of my broken steering lines were in the center of the loop, so it must be weaker there. I doubt you're going to shear a steel cable with a piece of nylon.
How did you calculate the m.a.? The guy I was talking to from UPT at Rantoul said the mini force advantage is crap. Virtually insignificant leverage advantage, but with a much greater chance of binding. I wish I still had my reversed mini risers, it's been a while since I've seen how they route the loop. I thought it comes straight off the riser instead of making the 180 bend.
I'm inclined to believe that you can theoretically double the rated number because the load is being by the two (2) sides of the loop.
d123 3
edit to add:
http://www.dropzone.com/gear/articles/The3RingWhatItIsAndHowIt.shtml
http://www.dropzone.com/gear/articles/Reversedvs.Non-ReversedR.shtml
http://www.dropzone.com/gear/articles/AnalysisofaRiser.shtml
My momma said I could be anything I wanted when I grew up, so I became an a$$hole.
riggerrob 643
That is why reversed risers are not as easy to release.
Bill Booth once told me that he tested a variety of reversed risers and they failed at 20 to 80 percent of the strength of mini risers built to 3-Ring Inc.'s sepcs. Bill's biggest complaint was that no dimension have been published for building reversed 3-Ring risers.
The bottom line is that reversed 3-Ring risrs are not as strong.
BKR 0
This was in 99 and I have the full report.
Basik Air Concept
www.basik.fr
http://www.facebook.com/pages/Le-Luc-France/BASIK-AIR-CONCEPT/172133350468
erdnarob 1
BUBLHED 0
S.S. Loops attach at the bottom of the front riser and run up through a ring at the top of the riser then to a hand loop. When you pull the loop the ring acts like a pulley and the riser collapses giving you a mehanical advantage when doing front risers. Greatly decreases riser pressure.
QuoteThe guy I was talking to from UPT at Rantoul said the mini force advantage is crap. Virtually insignificant leverage advantage, but with a much greater chance of binding.
www.flyaerodyne.com/download/miniforce.pdf
Seems pretty legit to me. Obviously a guy from UPT is going to say its crap, because the rig he is trying to sell you doesn't have it. What business doesn't work that way.
Oh I'm coming, but I won't be there!"
Flying Hellfish #828
Dudist #52
d123 3
674.4 pounds / 3,34 pounds = 201.79640718562874251497005988024 to 1 m.a. for the mini-force. That's better than the theoretical m.a. of the large rings.
Also the test done for the mini-rings shows a 75.605381165919282511210762331839 to 1 m.a. which is closer to what Andre posted (BTW thanks) than my 30 to 1.
"It's like a hamburger, with cheese on it"
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