Old 06-06-17 | 07:16 PM
  #18  
arctos
40 yrs bike touring
 
Joined: Jun 2005
Posts: 1,022
Likes: 6
From: Santa Barbara,CA.

Bikes: Bruce Gordon Ti Rock N Road [1989], Fat Chance Mountain Tandem [1988], Velo Orange Neutrino (2020)

Quilt Layering Temperature Formula
The formula I have always used and found pretty reliable is:

x -(70 – y)/2 = z

x = higher rated/lower degree bag/quilt
y = lower rated/higher degree bag/quilt
z = combined rating
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