Jun 27, 2011, 8:40 AM
Post #1 of 23
Sigma Break Toggles
Hello could we please get some input on this.
We have Micro Sigmas 2 years old 400 jumps on them and a few older Sigmas..all well maintained.
We seem to keep getting the break toggles stuck. When setting the breaks , when you stick the "rigid" top of the toggle through the retainer loop we seem to be getting the toggle up through the loop a tiny bit too much. So the loop is below the rigid part of the toggle and locks up where the toggle is flimsy, it ties of the rigid part so when we try to release we cannot pull it out. This seems to only happen at 2 rigs.
It happened 3 times to me . I was able to " climb" up there and get it out..but yesterday we had 2 (!) cut-aways due to that (after not having had any other cut-aways in more than a year) I don't blame the instructor because when I had these incidences before I had to work all the way to my hard deck to get them released. and I had been very close to "giving up" and chopping...
Side note We kept jumping them after my expereinces because we thought it was "just a packing issue" that we had addressed by not sticking them up too far.
Side note: We do normally used the snaps but some instructors don't like them
Any thoughts on how to prevent this. Are there any toggles out there where the rigid top bit of the toggle extends down further. (I believe when I worked in new Zealand our toggles were way more rigid and further down (Strong Tandems there)
How have the openings been? The only time that I ever had problems getting the toggles released is after a significantly hard opening, when packers set the brakes incorrectly and when the lineset was on the way out.
You didn't say if the linesets were Dacron or not.
In my opinion, this should only happen when the toggles are not snapped. The snaps set the distance so the toogle cannot travel up far enough to get to the soft area. By keeping the distance fixed, the snaps dont allow the toogle to get choked.
Use the snaps and the problem should go away. Also, you can always buy the new risers from UPT that have hinge snaps that release very easy. My new Micro has them and they work geat. Almost no effort to release.
Could it be an issue with the retainer loop shrinking over the time?
Don`t really see how, but we had the same problem with spectra lines on a sport canopy where after some (many) jumps the eye got smaller and smaller up to a point where it was nearly impossible to insert the hard part of the toggle into it, let alone releasing the toggle...
hello dudes, got one toggle stocked too and I had to jettison my main so use the snaps ( when they are still there ) & personally I have passed the control line through the toggle grommet from the top of the toggle so the loop retainer can't get over anymore. May the force be with you ! Banzai ! Xophe
Hi, we have had that issue with a few of our rigs. Sounds like the retaining loop on the riser needs to be changed or indeed the whole riser and toogles. Another thing i came across here is that you have smaller line on other canopys than the sigma. I think the hop has small dacron. We have used the twin 372 from paratec in ours. And it was possible to push the toogle to far into the loop. I added a really stiff material across the toogle just above the grommet to prevent the brake line coming to far.the brake line gets snagged around the lip where it is folded back below the grommet. When i get back to the loft later in the afternoon, i will try to upload a couple pictures. Rodger
thanks rodger. could you post a photo of this? I just spoke with Mike @ UPT. They have new risers where the stiff part extends further down....I have ordere a set and will post if it solves the problem.
Hi Alex, no it's not that the loops are too short...on the contrary a shorter loop would prevent this scenario.
The toggle moves up to far. So the loop is down where the toggle in not stiff anymore and "ties up" the flimsy part. So when you try to release you are pulling the brake toggles down to release the brakes..the stiff part gets locked up by the loop see this VERY amateur drawing.
The solution would be to have the stiff part go down further (like on Strong System toggles)
I dont think you have 8500 jumps with Sigma 2 mains with Vectran. This is a problem that UPT has obviously acknowledged with the new stiffened riser. We have new Vectran canopies and have had one cutaway, two near cutaways. An associate DZ has had at least one cutaway due to the toggle working its way upward with the grommet sliding throught he loop during opening. Experienced TM with 14000 jumps watched it happen. The toggle was stoed in the keeper, worked its way out of the keeper on opening and slid up. He was able to clear it.
Yes snaps keep it in place but often break due to TM's anxiously yanking down. DZO's do not want to spend $300 every 100 jumps on new risers.
Hopefully theyve got it sorted with the new risers.
In reply to:
Are you talking about the sigma Ty.7 main risers ?
Are you using the Dacron Loop under the guide ring ?
I have about 8500 + jumps on the sigma & NEVER saw that happaned.
If you push the toggle too far upward & do not use the snaps maybe but if all is set as should be no reason for that.
All goes to packing training & care of details.
The risers are good - both types = Velcro & Velcroless - I like the Velcroless type - works great.
Hello I have received the "supposedly new" design with the stiffer top part of the toggle. I do not think that there is any change....is is stiff on the top but is gets flimsy by the grommet. Thanks for posting skydiveoc . Interesting to hear that we are not the only DZ with that problem. it would be such an easy fix to extend the stiffener down.
@ Rodger "I added a really stiff material across the toogle just above the grommet to prevent the brake line coming to far.the brake line gets snagged around the lip where it is folded back below the grommet. When i get back to the loft later in the afternoon, i will try to upload a couple pictures. Rodger "