Asymmetrical vs rectangular underquilt

[Rain Man]

I did my own DIY down UQs asymmetrical, and did dart the inside material a bit differently due to the deferential. Same for the baffles.

My hammocks are asymmetrical.

[Oppilas]

I think I'm starting to wrap my mind around how to make differential cuts. The tough part will be knowing how much smaller to make the inner layer

[SilvrSurfr]

Does anyone commercially offer an asym UQ? Seems like a bit of a drag keeping two different stocks of quilts, head left-feet right, or head right-feet left. I guess you could flip the UQ depending on how you slept.

By the way, the KAQ New River is a rectangle, according to their website:

http://www.arrowhead-equipment.com/s...nderQuilt.html

"Construction of the quilt is similar to the Potomac, but this quilt is rectangular and is flat."

The Potomac would seem to be asymmetrical, since it's designed for Hennessy Hammocks, which are asymmetrical hammocks.

[Oppilas]

Flipping the UQ probably wouldn't work so well as the outer fabric layer won't prevent you from over tightening and consequently compressing your insulation.

[SCGobbler]

I heard from AHE just this week that the Potomac is Asym

[hutzelbein]

I'm planning to make an underquilt that has no insulation in the top right and bottom left corner (I sleep head left, feet right) to save a bit of weight, since I have never noticed needing the insulation there. I'm not sure if somebody has done something exactly like this - but there are underquilts with diagonal baffles (e.g. Locolibre).

[brianb]

I've built a couple of variations on this idea. I like my current one where I've sewn the UQ directly to a 2 layer hammock. The UQ is a narrow rectangle and angled to match my sleep orientation (Head left, feet right so wie @Hutzelbein). I've had it out 6 times now and it's doing well. Wouldn't work for folks who move around a lot. So while there's not really a category for asym under quilts yet, there's a few oddball examples out there.

[Boston]

Aren't WB's Yetis asym? Or am I confused/mistaken?

(I know, it could be "Yes" to both questions, they aren't mutually exclusive...)

Yes it is, but only so far as it is shaped to try to improve fit on your left shoulder. It is specifically designed to e used with the standard WBBB, which come's in a head-left lay. Head right lay is available upon request last I checked, but has an additional fee for non-standard work.

If you dig back in the archives you can find a thread where he posted details of the shape for his first synthetic prototypes. Who knows what adjustments have been made since, but it'll give you an idea of what the shape is.

[ttime4four]

My LocoLibre UC has a "Right hang" to keep the baffles in line with my body when hanging in the BBXLC.

[Grumpy Squatch]

Outandback, I believe you as far as not needing one. The KAQ under quilt is a trapezoidal asymmetric UQ , I believe. I think I've seen a couple others.

Does anyone commercially offer an asym UQ? Seems like a bit of a drag keeping two different stocks of quilts, head left-feet right, or head right-feet left. I guess you could flip the UQ depending on how you slept.

By the way, the KAQ New River is a rectangle, according to their website:

http://www.arrowhead-equipment.com/s...nderQuilt.html

"Construction of the quilt is similar to the Potomac, but this quilt is rectangular and is flat."

The Potomac would seem to be asymmetrical, since it's designed for Hennessy Hammocks, which are asymmetrical hammocks.

I heard from AHE just this week that the Potomac is Asym

Indeed it is. I own 2.

SilvrSurfr hit the main point - though an asym quilt makes keeping the quilt up on one shoulder and one foot a bit easier, the trade-off is that if you have a symmetrical hammock and want to reverse your lay you need to flip the quilt over. Which means both faces would ideally be made from a fabric suitable for exposure to the weather making it a few grams heavier than quilts that use a lighter fabric on the "inside" face.

I have both asym UQs (Potomacs) and symmetrical (HG) and they all work equally well on asym hammocks (HH and Dream Hammock) and symmetric hammocks (Dutch). On my list of UQ features, asym cut is a very low priority. I don't buy or not buy based on that. But if you're making your own gear and you have an asym hammock, I don't see why you wouldn't give it a go.