I’ve finally gotten around to finish sewing a backpack, for which I had the fabric panels already cut and lying around for quite some time but didn’t get to it. Now that it’s done, I’m really happy about it, despite some minor flaws.
The pack it’s about 35ish litres in volume at a weight of 705g in this configuration, so without a hip belt. I couldn’t find the time to make one, so I used one of a previous pack in combination with the provisional lumbar pad. The weight doesn’t include the thumb loops, because they’re detachable and only used when I don’t have a shoulder strap pocket and a bottle holder attached to the straps.
The fabrics i used are x-pac x21 rc, a lightweight 4-way-stretch mesh, a thin 3d air mesh for the trampoline and some regular 3d mesh for straps and the lumbar pad.
The frame is made from two 12*2mm flat strips made from pultruded carbon and they’re inserted into sleeves that are made from folded nylon webbing. They’re held in place with a Velcro tie wrap, because I also haven’t gotten to make an x-shaped sleeve to replace it.
The shoulder straps are connected to the body with a single silk clip and are adjustable. Unfortunately, i made some measurement mistakes on that construction, which lead to the size range of 47-65cm back length. Lucky for me, I need a length of 48cm…
Before you ask: no the body doesn’t shift left or right because the load lifters stabilise it.
And there’s another mistake I made, the load lifters aren’t connected to the frame. This way they only work as desired, if the pack is filled high enough so the contents help push the body into the frame. Nonetheless, the frame diverts the weight onto the hip belt just as it’s intended to do, making the pack as comfortable to carry as I hoped it would.
I already tested it on an overnighter last weekended and it performed very well with ~9-10kg load.
All in all, I find it to be a successful experiment, especially because this is my first framed pack and there are not many existing packs with an x-frame construction that could serve as examples for how to construct the frame.