On Wednesday, October 8, 2014 3:30:33 PM UTC-7, wrote:
What are the differences in the inertial nagivation systems between the Butterfly vario and the S80?



The LX literature was confusing on how wind calculations are made and it says in one place that the S80 makes continuous wind calculations on its own but in another place it says that the S80 requires the compass module to improve wind calculations.

There is no information in the manual about inertial vertical air mass movement nor inertially derived wind - the two most impressive things about the Butterfly (Air).

It looks like it does have a very nice Flarm display and flarm warnings - the two least impressive things about the Butterfly.