On Wed, 13 Jul 2005 19:12:16 GMT, Jose
wrote:

Our club is considering installing an electric AI as a backup after a
vacuum gyro failure not involving the suction system. We have three
cherokees and are looking at three alternatives (we'd like the same one
in all the aircraft):

http://www.lifesavergyro.com/purchasing_home.html

http://www.sportys.com/acb/showdetl....roduct_id=7439
(ignore the request for password)

http://www.gyrohouse.com/catalog/items/item551.html

The first is a $4000 unit, the other two are less than half that.
Anybody out there have any experience with these units, or the companies
that make them?

No experience with any of the electric gyros, but the 1st one contains
a battery backup in case the electric source dies. Since this would
be a backup to your vacuum ADI, I think that's overkill. I would not
pay $2000 extra for it.