Originally Posted by hawghangar
Thanks BB - as always good advice. Here is my planned logic to incorporate the JRB Winter Set with my existing HHSS and Sierra Stealth (40F) TQ:
1. Temp < high 20s: MW4 (vent as necessary) UQ + Old Rag Mt TQ
2. High 20s < Temp < Low 40s: MW4 (vent as necessary) UQ + Sierra Stealth TQ
3. Temp > 40s: HHSS + Sierra Stealth TQ
I'm concerned that the MW3 might get cool below high 20s... and am trying to maximize range of temps without scrapping existing equipment.
Regarding the side tie-outs, I guess it would be unusual that I would need the bug net in place while in the temperature range that required the MW UQ - so maybe this is a non-issue.
You think I'm off the mark with any of this logic?
No, not off at all but as always depending on your individual cold tolerance, and see Chebaca's post. And depending on what kind of experience you have been having with the HHSS.
Just something to keep in mind: if you successfully use an HHSS, let's say down into the 40s, when you go from the HHSS to an UQ, you give up the wind block properties of the HHSS undercover. If you have a sheltered site and or a big enough tarp with an excellent pitch- or no wind - this will be of no consequence. If you are exposed to the wind for whatever reason, it can be very significant. Also, FWIW, you will be giving up the VB and whatever radiant effect the space blanket has. I think the space b. /VB is very helpful, as I also use it to push the bottom rating of my PeaPod even lower than 20. YMMV. But something to keep in mind when you switch to a totally different system.
OTOH, several here have reported successfully using an MW4 pretty much all by itself below zero. Many others in the low single digits. For me, 10F on a bridge hammock, very windy(with inadequate tarp coverage) 18F on a WBBB, all nice and warm. Plus if you study up on it, no reason you could not augment it with a space blanket if desired, just make sure you know what you are doing. But it looks like you are not planning to push it much lower than 20, so you should have plenty of reserve even if you sleep a bit cold.
The MW3, you might push that a bit beyond it's rating. Consider Chewbaca'a results. But if that is only a rare event, you shouldn't be too miserable. Plus, there is always that space blanket, or even augmenting with a thin pad on rare occasions.
Consider those Greylocks also, unless a special MW sale is on. My favorite way to use my MW3 convertible is in short mode, which goes from the top of my head ( on a bridge hammock) to my knees.
And Fartintone ( aka Cool Hand Luke
) makes good points about venting as opposed to augmenting the MW3 when needed. Plus you do save some money and oz with an MW3. Oh, so many ways to skin the cold cat!