0
travelingmack

Low bulk PC`s

Recommended Posts

Think about it. a 15% reduction in packing volume of a canopy is a big deal as the material is the bulk of the volume. in a PC you have the mesh, the load tapes and the bridle w/ kill line (remember you do put a good portion of the bridle into the BOC as well). so really, a 15% reduction in packing bulk of the F111 material will be barely noticeable, if at all.

on the subject of BASE PCs... Well, quite a few people prefer ZP PCs, and being that the new material is more F111'ish - makes it a moot point. Personally, I would waita few years and lots of test jumps on new material PCs before I venture trusting one in a single canopy environment.

Share this post


Link to post
Share on other sites
The new material is more of a hybrid... and the "new" material has been tested out for years...it`s good...but off course it last a few hundred jump shorter than a large bulk F-111 or 0-P does..
I have a Trango 225(240PIA spec) canopy...and it has the same pack-volume as a 170-190 canopy(normal F-111)....it flew superior and have great flare...so why shouldn`t we transform this material to pilotchutes?

Share this post


Link to post
Share on other sites
the theoretical scientist in me could not help it.

let's agree that changing the fabric will change nothing else (i.e. the volume of the bridle, mesh, load tapes will not change).

the area of a 48" PC is (pi*r^2) = 1810 sq inches
the thickness of ZP material is .003 inches (as per http://www.perftex.com/milpara.htm)

that gives us the volume of the 48" ZP round @ 5.43 cu inches.
a 15% reduction in packing volume will result in a volume decrease of .81 cu inches...

points to consider -
the ,81 cu inches, compared to the TOTAL volume of the ZP PC cap with all the components will end up being less than 10% of the total volume.
the values used are absolute - and are only valid if you can squeeze the very last bit of air out of the fabric.

considering my math is not off, the change is quite negligible :)

/I am not yuri_base. I am not yuri_base
/I am not yuri_base. I am not yuri_base
/I am not yuri_base. I am not yuri_base
/I am not yuri_base. I am not yuri_base
/I am not yuri_base. I am not yuri_base

Share this post


Link to post
Share on other sites
it may kill
it may not

but the packvolume is only "tiny and little" relative to something really small, a lot smaller than the whole PC assembly

the proper wording is "a tiny bit smaller than xxx". and at that point I'd rather stick with something that has worked for me and others for thousands of jumps and many years. It's not like the BOC is not made from elastic material :)

but that's just me ....

Share this post


Link to post
Share on other sites
For some reason I picture pilot chutes being made out of scraps that are left from making canopies. I imagine they'll sell you a low pack volume pilot chute for a bunch of extra money, even though they just picked it out of the trash.
"If it wasn't easy stupid people couldn't do it", Duane.

My momma said I could be anything I wanted when I grew up, so I became an a$$hole.

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