But is HeliSas a 4 axis AP? Or is it just as the title implies - linear actuators in the control runs providing rate damping?
It's a legit 2-axis autopilot, not just a SAS.
Genesys has recently started to advertise a 3-axis, SPIFR certifiable, version that is 35lbs.
Here's the video on the lightweight, 12lb, 2-axis version that people are putting into R44's and R66's at a rapid clip. Not sure if we are going to see this in the 505, or if Garmin will beat Genesys to it with their GFC600H.