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Dimensions for demogorgon flaps:
- Sewed to rectangle: 1/2 in tall, 4.172" wide
- Circumference = 16.6891"
- Diameter = 5.312"
- Flap height = D/2 + .75 (grommet) = 3.406" (can add extra for bulge)
- Flap height + 1.2" sewed part = 3.906"
- Grommet = 1" diameter, flap 1/4" past edge
- Extra fabric for finishing seam = 1/2"
- Width of top of trapezoid = 1.25"
Dimensions for bottom:
- Circumference = 16.6891"
- Flaps 1" wide, 1/2" tall
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- Fold over the hem twice. This will use will use a Edge Finish KFb.
- Pin the hem.
- Sew hems on flaps by folding edges over twice
- Add grommets to flaps using arbor press. The small smaller arbor press inside the shop is preferable.
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The Hermes I bag did not stow or restrain the main parachute suspension lines or riser. There was concern that the unrestrained lines and riser could tangle with themselves or with the various hardware at the confluence. This could have caused the lines to abrade or TODO.
Hermes II Main Bag Improvements
The first generation of the Hermes II main bag was sub-par so we deemed it a prototype. We are making the following improvements to the design.
- Move the bottom tape towards the mouth to allow for the full seam allowance.
- Single exterior rectangle.
- Make wider (and thus shorter)
- Add loops through closures
- Remove line holding flap. Replace with rubber bands
- Add grommet in bottom for bridal to pass through
New Dimensions:
Rectangle:
- Height = 14.875" Seam allowance = 3/8"
Width = 17.2" Seam allowance = 1/4" per side
Bottom:
Flaps:
- Trapezoidal flaps
- bottom length 4.175" = circumference / 4
Sources
- Dimensions for main rectangle: