Stacking quilts and temp ratings.

[Ethesis]

I've been researching that again to look at alternatives for extending the temp range of my quilt.

You know. Getting a sixteen ounch 850 fill second quilt to layer vs getting a two lb 850 fill bag to use when it gets colder.

Best thread I found seems to be this one:

https://backpackinglight.com/forums/...rature-rating/

This is the link they discussed. https://support.enlightenedequipment...bile_site=true

Got distracted with lots of interesting threads.

https://whiteblaze.net/forum/showthr...lculate+warmth.

[Ethesis]

Err ounce not ouch.

[Ethesis]

Found this too

https://whiteblaze.net/forum/showthr...=1#post2152054

[LoneStranger]

Can you do it? Yes. Will it work for you? Maybe. It is very personal and situational, so testing is required and even if it works in some situations it may not work in all so be prepared to augment.

That being said, I've had good luck combining a 40°F down quilt with a 20°F synthetic on top. My thought was to move the condensation/frost point away from my down to avoid icing up on longer trips. What you have under you also really matters and I prefer to use a TR TrailPro on top of an inflatable like a TR XLite or BA QCore. Too much heat loss rolling around directly on the air mattress for my tastes. With this system, on the ground/snow, I can comfortably go past -10°F with extra clothing and hand warmers at the ready should things go wrong. Coldest I've taken it was -18°F and that was beyond comfort and time to pop hand warmers to make it til dawn.

Bottom line is test as much as you can and then be prepared for it not to work as well as it did in testing

[Ethesis]

Can you do it? Yes. Will it work for you? Maybe. It is very personal and situational, so testing is required and even if it works in some situations it may not work in all so be prepared to augment.

That being said, I've had good luck combining a 40°F down quilt with a 20°F synthetic on top. My thought was to move the condensation/frost point away from my down to avoid icing up on longer trips. What you have under you also really matters and I prefer to use a TR TrailPro on top of an inflatable like a TR XLite or BA QCore. Too much heat loss rolling around directly on the air mattress for my tastes. With this system, on the ground/snow, I can comfortably go past -10°F with extra clothing and hand warmers at the ready should things go wrong. Coldest I've taken it was -18°F and that was beyond comfort and time to pop hand warmers to make it til dawn.

Bottom line is test as much as you can and then be prepared for it not to work as well as it did in testing

I'm hoping that I'll be able to extend from 40 degrees to 25 degrees.
Just in case I hit a cold spike.

I have been playing with options. Lots of things just add a lot of weight.

Appreciate your thoughts. If it spikes below 25 I'm scrubbing and trying something else.

My thermarest pad has gotten quieter with time.

But I'm looking for improvements.

[Elaikases]

I've wondered about stacking two of these:

https://smile.amazon.com/WIND-HARD-W...s%2A=0&ie=UTF8

https://backpackinglight.com/forums/...elation-clone/

[Elaikases]

I look at this with the same weight, fill power, etc. https://smile.amazon.com/Marmot-850-...=850+fill+down

I find it hard to believe the Marmot is really good to 20 degrees F.

Both are about a pound with 850 fill power down.

But, I'd think the Aegismax stacked two deep would probably take you to 40 degrees. Maybe cooler.

What does everyone else think?

[Elaikases]

There is a reddit about it here: https://www.reddit.com/r/Ultralight/...rd_tiny_quilt/

A number of posts about that one here on Whiteblaze.net -- especially how it is sewn through (which off-setting double layering would help reduce), but some good concerns as well. e.g.

https://whiteblaze.net/forum/showthr...light=aegismax

I think there is no way to know unless you test one yourself. After you've done that, come back and write a review.

https://backpackinglight.com/forums/...ag-from-china/ has a review of the bag and how it worked out for someone.

[Elaikases]

There is a reddit about it here: https://www.reddit.com/r/Ultralight/...rd_tiny_quilt/

A number of posts about that one here on Whiteblaze.net -- especially how it is sewn through (which off-setting double layering would help reduce), but some good concerns as well. e.g.

https://whiteblaze.net/forum/showthr...light=aegismax

I think there is no way to know unless you test one yourself. After you've done that, come back and write a review.

https://backpackinglight.com/forums/...ag-from-china/ has a review of the bag and how it worked out for someone.

Hmm. http://adventure-us.guide/aegismax-m...ng-bag-review/ Bottom line was that it did not perform properly until it has been washed in Nikwax.

[Puddlefish]

I stacked a 35 degree bag, with a 40 degree quilt and loved the system for a mid April NOBO start. I mailed the bag home after the big southern mountains. Not quite what you were asking, but it's another option.

[Elaikases]

I stacked a 35 degree bag, with a 40 degree quilt and loved the system for a mid April NOBO start. I mailed the bag home after the big southern mountains. Not quite what you were asking, but it's another option.

Thanks for the input. How warm did it keep you to in terms of temperatures?

[Hikingjim]

If you're getting into 20-30f and you have a 30 or 40 quilt, you can also consider supplementing with a down jacket that has a good amount of fill.
I have used an 16 oz/8 oz fill jacket (among other things!) and it eliminates drafts, keeps my head warm, and greatly extends my comfort when I go at or below my quilt rating.

For me it's more efficient than carrying two quilts, head warmth, a bunch of clothes to stay warm in camp.
Two quilts can work though... just have to have the right head warmth, limit drafts and have a proper r value pad for what you're getting into.

testing definitely key!

[Puddlefish]

Thanks for the input. How warm did it keep you to in terms of temperatures?

Coldest I ran into was 28F on a windy night. No problem. I also had a Klymit Static V2 pad, lightweight wool base layer, and a tarptent Notch, foot pointed into the wind, which could be adjusted to let in a little less ventilation in windy conditions. I used my compactor bag (which doubled as an air mattress inflator) over my feet to keep driven rain off the foot of the bag/quilt. Buff for my head, a t shirt over my feet at times (socks at night bother me.) The system worked great for me, as I had all sorts of bonus ventilation or draft prevention options. I hate being cold, but I also hate waking up in the middle of the night in a sweaty mess.

I had no prior camping experience, but learned a whole lot from the folks here on WB. It's all about the sleep system as a whole, and the knowledge of using the system correctly, and setting up in the right location.

Edit: I also had a down puffy, but rarely slept in it. It was far more often my pillow.

[Ethesis]

Over on Reddit they suggested that you just buy a single quilt from here:

http://www.locolibregear.com/gear.ht...egory=23556109

[Ethesis]

Coldest I ran into was 28F on a windy night. No problem. I also had a Klymit Static V2 pad, lightweight wool base layer, and a tarptent Notch, foot pointed into the wind, which could be adjusted to let in a little less ventilation in windy conditions. I used my compactor bag (which doubled as an air mattress inflator) over my feet to keep driven rain off the foot of the bag/quilt. Buff for my head, a t shirt over my feet at times (socks at night bother me.) The system worked great for me, as I had all sorts of bonus ventilation or draft prevention options. I hate being cold, but I also hate waking up in the middle of the night in a sweaty mess.

I had no prior camping experience, but learned a whole lot from the folks here on WB. It's all about the sleep system as a whole, and the knowledge of using the system correctly, and setting up in the right location.

Edit: I also had a down puffy, but rarely slept in it. It was far more often my pillow.

That is excellent as a summary and a report. Thanks.