Author Topic: Looking for Stays for Packs  (Read 2007 times)

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Gear Dynamics

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Looking for Stays for Packs
« on: July 30, 2017, 12:24:06 PM »
I'm looking for suggestions for frame stays for building packs. They need to be lightweight, and easy enough to cut to length. Aluminum is ok because it can be shaped by the end user, but these will likely be permanently sewn in, to provide rigity, so somthing more highspeed than aluminum is probably best.

Alex

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Re: Looking for Stays for Packs
« Reply #1 on: July 31, 2017, 09:30:52 AM »
Give Randy and Cory at Harperworks a call. They did a ton of our frames for the marine pack systems back in the day. They have done work for Arcteryx too. Good prices.

They can supply the bent rods or build an entire riveted frame from metal to your spec. Good people.

Cory Harper
Harper Works, LLC
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harperwk@pacbell.net


2000xjclassic

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Re: Looking for Stays for Packs
« Reply #2 on: July 31, 2017, 01:32:12 PM »
Kifaru sells a couple of different styles of stays.  https://store.kifaru.net/stay-kits-p34.aspx

Stoner63A

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Re: Looking for Stays for Packs
« Reply #3 on: July 31, 2017, 02:14:11 PM »
Something other than Aluminium leaves only a plastic or carbon fiber.    Both need to be pre-shaped before sewing in.

Aluminium, you can at least buy it from metal yard by 12ft pc then cut to your desired length, make a wooden form to prebend for sewing into your ruck.   

Pre-bending just a bit will make it easier for enduser to bend even further to fit their body vs trying to bend it from straight stock sewn inside ruck channels.

Dunno, man, I guess it turns into just how much technical effort you want to put into it. 

Globe

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Re: Looking for Stays for Packs
« Reply #4 on: July 31, 2017, 02:56:55 PM »
but these will likely be permanently sewn in, to provide rigity,

Why do they have to be permanently sewn in? That kind of defeats the purpose of being adjusted by the individual user. They can be just as rigid without being permanent fixtures. Look at the how they stays are secured on a CFP-90 pack (not a good pack, but the stays worked). Or look at how other companies like SpecOps Brand secured aluminum stays to an HDPE sheet.

http://www.specopsbrand.com/packs-bags/pack-accessories/t-h-e-pack-frame-black.html


Gear Dynamics

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Re: Looking for Stays for Packs
« Reply #5 on: July 31, 2017, 03:33:05 PM »
Thanks for all the input. I re-read my post and I realize it sounded like I was interested in aluminum stays. While I appreciate the customization a removable aluminum stay allows for, on this project all I'm thinking about is adding vertical load strength to a frame. Contour and shape are less important. Straight rods or bars that can be cut to length would be ideal. fibreglass, carbon fibre, some type of plastic?

If I do go with aluminum, the stays would be removable...just don't see a point in making them removable if they are straight and cannot be formed by the end user.

Never made a pack, but we're gonna try a simple one...more for personal use, rather than business.


Globe

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Re: Looking for Stays for Packs
« Reply #6 on: August 01, 2017, 02:31:05 PM »
http://www.questoutfitters.com/sale%20cart%20tentpole.htm#TENT_POLES

There are a few companies like this that sell a great assortment of tent poles and accessories. There are companies, most notably but not limited to,  REI and Osprey that are using very thin carbon fiber or aluminum tent poles in the suspension of their packs. The advantage is that they can have them naturally curve with the shape of the pack, however, that shape has to be detimined in the way the pack is constructed, at least the way they're doing it.

Corvus

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Re: Looking for Stays for Packs
« Reply #7 on: August 01, 2017, 03:21:39 PM »
McMaster-Carr has a ton of rod and bar stock in various materials from nylon to titanium I believe. Also check out Tent Pole Technologies, they can make custom lengths of high end aluminum or carbon tube.
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Stoner63A

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Re: Looking for Stays for Packs
« Reply #8 on: August 05, 2017, 04:06:13 PM »
The Dana Gleason-designed USMC ILBE Ruck used a combination of round fiberglass rods and 1/8" x 1" Alu staves in its internal frame construction. 

Oh, I forgot, get yourself a SailRite catalog, they have some alu and composite flat bar like materials used in the mfg of various Sail rigging's like Battens (moving to FL, figured I'd look into that industry, have you seen how much yuppies spend on nylon?):
http://www.sailrite.com/All-Hardware/Sail-Hardware/Battens-and-End-Caps

ABS Cycolac, Pultruded fiberglass-reinforced plastic,  and they have plastic 5/8", 1", 1 5/16" endcaps to slip over the cut end to prevent the boning from cutting thru your fabric, like you see in the USMC FILBE Ruck Shoulderstraps, which have an HDPE strip sewn inside the shoulder straps that quickly cuts through the 500d cordura.