There are two air chambers, main and negative, that are filled up with one valve. By engaging the flightcontrol remote, both chambers connect, and air pressure equalizes between the main and negative chamber. The negative air spring, when in the long travel, is supported by an additional top out elastomer, while in the short travel, only the air negative spring is active, the elastomer is not engaged.
I weigh 155 lbs. and used pressure from 65 psi to 80 psi, depending upon the terrain I was riding. The lower setting was perfect for climbing and normal trail conditions, while the higher setting was perfect when hammering in technical trials terrain. Sag was usually around 25%. I left the AS+ platform more towards the firm side, since I used it on fire roads and butt smooth singletrack. Even with the powerful rebound, I decreased the rebound damping 1-2 clicks from the middle.
Axle-to-crown measurement: 519mm
Thor – 1773.7 grams or 3.91 lbs.
Thor with Maxle: 1914.1 grams or 4.22 lbs.
Maxle – 140.4 grams or 5 oz.
Thor with 60 less bolt – 1855 grams or 4.08 lbs
Thor 60 less axle with pinch bolt – 81.3 grams or 2.9 oz.