Can I use my STAC Zero wheel weights with Fliiiight? November 13, 2019 22:59 Updated Follow No, the wheel weights interfere with the optical speed sensor. Related articles Can I upgrade my STAC Zero to a Fliiiiight? Will 4iiii continue to support my STAC Zero trainer? Is there a PC or Mac version of the 4iiii app? What is the Wheel Rim Circumference value? How do 4iiii powermeters manage false power readings when riding over rough terrain? Comments 0 comments Please sign in to leave a comment.