This is a small 1,950 cubic inch capacity pack with a removable hip belt. I'm planning on doing some canyoneering with this pack I made mine with a frame sheet, compression straps, front lacing and a heavy bottom fabric. It still weighed only 24 ounces. It also has a roll top that gives it some good expansion above the 1,950 cubic inch capacity. The basic construction is the same as my tote bag pattern. The main seams are flat fell, so it should be quite robust. I have created two sets of dimensions for Torso lengths 23" and 20". For dimensions that are affected, the 20" torso length will be the number in parenthesis. To adjust for other torso lengths simply move the shoulder straps down to your torso length. Start with the Shoulder Straps. Both of my pack patterns have used the same design, so I have as separate link for them. |
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Cut two pieces of light weight fabric 18-1/2" X 36-3/4" (33-3/4") and one piece of heavier fabric 18-1/2" X 16-1/2". Sew together as shown using a flat felled seam. There is a 3/4" seam allowance. The final size of the three pieces should be 87" (81") X 18-1/2". |
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| Mark the front, back and sides as shown. |  |
| Cut a piece of heavy fabric 8-1/2" X 6-1/2" for the hip belt pocket. Hem the sides so that the overall width is 8-1/2". put a 2" piece of velcro on the ends on the inside. Sew on to the back as shown so that it has a 4-1/4" pocket. Run two stitches for strength. |  |
| Sew the shoulder strap assembly as shown. Sew two rows of zig-zag stitches to reinforce the ends of the shoulder straps. |  |
Cut a piece of fabric 11" X 26-1/2"(23-1/2") for the frame sheet pocket. Sew a 1" wide hem on one end. The length should now be 25"(22") long. Sew an 8" piece of velcro to the hemmed end on the outside of the pocket. Transfer the location of the lower corners and sides using a pin from the outside of the pack. Mark the location of the frame sheet pocket and sew in place. |
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| Cut a piece of fabric 7" X 11-1/2". Hem all four sides (3/4" seam allowance on the sides and 1-1/2" on the top and bottom) to make a piece that is 10" X 4". Sew a piece of velcor on one end to mate with the one on the pocket. |  |
| Draw a line 3-1/2" above where the shoulder straps are attached. Mark the intersection of the load lifters and the line (should be approximately 6"). Cut a piece of 3/4" webbing 10" long. Put two 3/4" ladder-locks at the intersection you just marked and sew in place. The seam line of the webbing shoud just line up with the seam for the framesheet on the other side. Be careful and don't sew the flap down. |  |
| Mark position for lower shoulder strap as shown. Cut 25" X 1" webbing and sew in place (one row of stitches) |  |
Cut four pieces of 3/4" webbing 3" long and sew ladder-locks for the compression straps (sew just one line of stitches to position.) Cut two pieces of 3/4" webbing 3" long and sew ladder-locks for the hip belt compression straps (sew just one line of stitches to position.) |
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| Sew reinforcements using patches of webbing or make them out of fabric. |  |
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