On Monday, November 25, 2013 10:47:16 AM UTC-8, Pam Howarth wrote:
Any Butterfly vario users out there care to share their experiences?

I'm particularly interested in whether the wind information is reliable and

whether the A/H is stable and usable? (Not too bothered about the

Navigation or Flarm functions as better solutions exist)

Dave Walsh

I have one, the wind seems to be reliable and is truly instantaneous. Being inertially derived, it seems accurate in all directions, not just the headwind/tailwind component. This can be seen flying through thermals with a new wind vector plotted every second. My A/H has been stable and useable, but I haven't tried loops with it.

Don't discount the Flarm and Nav functions. The nav is a backup, but I often set it on a guarded airport when low while leaving the other PDA software on task. The Flarm screen is relatively useless, but the voice warnings are well worthwhile!