0
freeasabird

Moderate canopy turn on opening.

Recommended Posts

This past Tuesday I made 2 jumps with a rental rig (not sure of the make of the canopy - but I know it was a 190 ZP; the harness/container was a Wings). On both jumps my canopy turned moderately to the right upon opening - even after both brakes were released. Controlability was OK, but I had to hold left toggle at half brake (to shoulder) to keep canopy flying straight. Landing was a little tricky, but I kept canopy overhead and landed on feet both times.

After first jump, I made sure to double check my leg straps for tightness and evenness - but still had exact same canopy performance on second jump. The previous Sunday I had jumped the same rig twice with none of these problems.

Is there something I am missing here?
-----

Share this post


Link to post
Share on other sites
Have the head instructor and/or your DZ's rigger look at the canopy They can lay it out to do a quick and dirty line trim check to make sure its atleast close.

Beyond that, get video of your landings, with low time jumpers 9.8 times out of 10, they are reaching with a leg or an arm and thus not flying their canopy evenly.
--"When I die, may I be surrounded by scattered chrome and burning gasoline."

Share this post


Link to post
Share on other sites
Do you stow your toggles when you have landed? It is possible if you let them dangle that one of the steering lines could have more twists in it than the other. Over a couple of jumps this could lead to one side becoming much shorter than the other side, sounds like this could be the problem since it was ok before.

Share this post


Link to post
Share on other sites
I have the same problem with my brand new Sabre 2. I had a rigger jump it and do a line check. He said it was fine. He was not loading it as much as me. So to counter the problem I just tighten one leg strap tighter than the other to get it to fly straight. I wish I knew what my problem was also. Good luck.

You dont't get to choose how you're going to die. Or when.......You can only decide how you're going to live........NOW.
-BASE 1605 Night BASE 227

Share this post


Link to post
Share on other sites
Quote

Beyond that, get video of your landings, with low time jumpers 9.8 times out of 10, they are reaching with a leg or an arm and thus not flying their canopy evenly.



My problem starts immediately after opening at +/-3K. It is not a landing thing.

Do you stow your toggles when you have landed? It is possible if you let them dangle that one of the steering lines could have more twists in it than the other.***

Yes, I stow my toggles right after landing. Also during every repack, I work the twists out of my steering lines...so I don't feel that this is the problem either.

Share this post


Link to post
Share on other sites
I had the same problem this weekend, although it was a slightly different canopy (a Xaos 98.) Some things to check for:

-Does it turn both before and after brakes are released? If so, check harness tightness; if one legstrap becomes loose it can cause the harness to shift to one side and cause a turn.

-Are the brake lines symmetric? Both should have some bow in them, and they should have the same amount of bow. If they are pulling down on the tail at all in full flight they are too short; both toggles should have 2-4 inches of play in them before the tail gets pulled down.

-Risers OK? During packing, make sure that when your 3-rings are aligned, the center A and D lines still line up at the line attach points. If they don't, something between the 3-rings and canopy is out of trim; might be a damaged riser or a softlink installed incorrectly.

-Can you correct with body turns? Try pulling up one leg and straightening the other; that may be enough to counter the turn.

-Any canopy damage? Some damage (to ribs especially) can be hard to see but may cause a turn. A rigger can do a main inspection pretty easily to determine if that's the problem.

Share this post


Link to post
Share on other sites
***Does it turn both before and after brakes are released?


Yes.

Quote

Are the brake lines symmetric?


I believe so. Both had about 2 inches of play when up. I did notice that when I was flying "corrected" (i.e. flying straight) with left toggle down to shoulder, that the left tail was pulled down substantially more than the right. In other words, when looking at the tail while I was flying straight, one would have assumed that I should have actually been turning left.

Quote

Risers OK?


As far as I could tell. (not saying much with my level of experience/knowledge)

Quote

Can you correct with body turns?


Yes. I did this on the second jump. I straightened my left leg and lifted my right. This helped reduce the amount of left toggle input required to fly straight.

Quote

Any canopy damage?


Not sure. I'll mention to my rigger though.

Thanks for all the comments!
-----

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

0