Maybe I'm the slow kid at math, but to figure this out, I had to draw a
three, bad picture
s. So in case this helps anyone who comes along later, wondering what the heck a whoopie sling is, even after watching the video, or thinking of making one and trying to figure out how much amsteel to get, to end up with a certain length sling...
Oh, and this wasn't actually mentioned in the video - how long do you need to make the adjustment bury? Looks like about 8? I went with 8.
So I'm planning a 20-36" adjustable bridge, with a 4 inch fixed loop around my saddle webbing at one side, a carabiner on the adjustable side, and a 4 inch tail (with a bead on it to prevent it from ever getting sucked too far into the adjustment bury). My math is coming out to about 7 feet of amsteel to start with.
Oh, and I found a better picture than I could draw, and added some saddle-appropriate annotations (and totally did not steal it from a hammock site at all
)
My measurements:
- Fixed eye: 4 inches for the loop, 8 inches to bury, 8 inches to be buried through
- 4 inches of "spacer" length to get my min of 20"
- 8 inches to bury the adjustment through
- 32 inches to form the adjustable loop
- My max loop size would be 16 inches, making the max bridge length (not including the fixed loop): 8+4+8+16 = 36".
- min loop size would be 0-ish, making the min bridge length (not including the fixed loop): 8+4+8+0 = 20"
- "0-ish" will still be going around the thickness of a carabiner in the adjustable loop end
- If you want a longer sling, either add the length in here, or add it in the "spacer" number above.
- 8 inches to go inside the adjustment bury section
- 4 inches to bury & stitch the tail into
- 4 inches of tail to bury (this is really just a loop, pulled as small as possible, and where I'll thread a bead or metal key-ring onto the amsteel to make a bump that can't get pulled into the adjustment section, even if the double-thick bury section somehow does)
So: 4 (loop) +8 (buried end) +8 (bury sheath) +4 (spacer) +8 (outer adj sheath) +32 (loop) +8 (inner adj sheath) +4 (tail bury sheath) +4 (tail) = 80" = 6' 8".
I've never actually done this before, so if someone sees a bug in my math, feel free to point it out and make me better.