Join Date: Oct 2006
Location: Charlottesville, VA
Tarp: MacCat Standard
Insulation: Winter Yeti, MWUQ4
Suspension: Whoopie Slings
WOOHOO!! Cold fronts are awesome!! Snuck in another test of the MWUQ and updated the page.
- Low temp 11F recorded on the Brunton
- Winds 3-5 mph (weather.com)
- Humidity ~20% (weather.com)
- Hennessy Hammock Explorer Ultralight
- JRB Mt Washington Underquilt (MWUQ) underneath
- Wiggys 0F mummy bag as top quilt
- Worn: Mtn Hardware fleece beanie over a Blackhawk balaclava, 300wt fleece sweatshirt over a cotton T-shirt, 200wt fleece pants, thick hiking socks, 200wt fleece gloves
We finally got a good cold front that put the MWUQ to the test! I had just flown in from D.C. Friday morning (where it was 9F at takeoff) so I couldn't rightly sleep outside Friday night without making my wife mad (I only have a few priorities above hammocks, but that's one of them!), so I slipped out of bed before sunrise Saturday to set up the hammock on the back porch. Definitely a successful test...over the next few hours, the MWUQ kept me warm to a measured low of 11F. Details below...
I connected the MWUQ suspension lines as described in the directions, and I used the mid-point suspension JRB adds to their quilts now. These seemed to really help the underquilt's fit underneath my knees, but I still got some gaps along the sides of my legs. This was barely an issue in the 20s because my bag provided enough insulation, but as the temps got closer to 11F I had to put a travel pillow on that spot to stay comfortable. Of note, I didn't use the HH side tie-outs and this may eliminate these cold spots.
I had another issue that side tie-outs would have helped. The MWUQ is narrower than other underquilts I've used so it needs more attention to make sure I stay on the quilt. As I moved around in the hammock the MWUQ would slide towards the right enough that my back wasn't protected by the MWUQ when I laid on my right side. I had to reach out of my bag and slide the MWUQ to the left to stay warm. Using the side tie-outs would keep the MWUQ aligned so this isn't an issue...I'm just not used to using them so this might take some change in my hiking style. (As I think about it, I wonder if I had the mid-point tie-outs too tight and that caused the MWUQ to slip over to one side. Next time I'll try loosening them a bit to see if the MWUQ still lists to one side.)
Right around the low temp, I got some cold butt syndrome (CBS). It wasn't cold enough to get me out of the hammock for adjustments, but I think eliminating the leg gaps would have helped with the CBS. Climbing inside the sleeping bag might have been enough to make it comfortable.
One problem - after about 3 uses one of the micro-biners stopped closing all the way. I've had this problem before with similar micro-biners that I got from Walmart. I've been able to fix it but it's a little bit of a hassle in the field. This is why I like the wire-gated micro-biners better.
So based on this test, I think JRB's 0-10F rating is probably accurate. I usually sleep cold so I predicted that the MWUQ would be good to ~10F for me. If I can fix the leg gap issue and pick wind-protected sites, I think I can be comfortable to 10F and acceptable to 0F.
Remaining items to test:
- Next time I use the MWUQ with the HH, I'll use the side tie-outs and not tighten the mid-point suspension so much. I think this will fix the gaps on the sides of my legs.
- Test for performance as a top quilt. This will be the narrowest top quilt I've used but that may be ok in a hammock.
- Measure the loft while the hammock is occupied.
“Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story
- My site: http://www.tothewoods.net/
- Designer, Jeff's Gear Hammock / Pack Cover
IMPOSSIBLE JUST TAKES LONGER