AIR Glide S

It's not on the longitudinal axis (you installed it off-center)? Does that cause any roll issues on the artificial horizon?

On Tuesday, July 5, 2016 at 2:01:15 AM UTC-7, Fox Two wrote:
I would assume that the two most common mounting locations of the ISU would be forward of the instrument panel, or behind the pilot's seat. I'm leaning towards installing mine forward of the instrument panel, but the nearby radio concerns me. Behind the pilot's seat would be a less convenient installation, and its proximity to the speaker and the steel spar pin present interference issues as well.

Any installation advice from people with either setup?

Thanks!
Chris Fleming

I mounted mine on CL forward of the instrument panel under the glare shield as far from anything else as I could. No problems due to mounting location..

On Tuesday, July 5, 2016 at 8:31:23 AM UTC-7, Fox Two wrote:
It's not on the longitudinal axis (you installed it off-center)? Does that cause any roll issues on the artificial horizon?

Mine is forward of the instrument panel, essentially over the right knee. Transponder and radio "guts" are not on that side. It appears to work fine there. Have not flown much IFR with it but appears the AHRS is fully functional.

A note that closing the canopy (if the instrument panel tilts with it) immediately after power up helps the Air S calibrate. Look for the three dots in the upper R of the AHRS display prior to launch. Without at least one (prefer two) dots, you won't get the sort of wind reporting the Air is famous for.

At the moment (could be fixed with software) if you're at a contest that demands disabling the AHRS the entire funtionality of the ISU is lost, seriously compromising the vario.
Had originally thought the AHRS screen would be the only loss.
I will send an e-mail to Air support about this.
Jim

If it does I haven't noticed but there again have done little IFR but have
flown with the horizon on without noting any issues.



At 15:31 05 July 2016, Fox Two wrote:
It's not on the longitudinal axis (you installed it off-center)? Does
that
cause any roll issues on the artificial horizon?

Ahrs lock affects only horizon. Everything else works as usual. It might be distracting that you get red cross over wind indication while on ground, but cross disappears right after take off.

The ISU contains compass sensors; so
the same precautions as mounting a
compass apply as far as magnetic fields
are concerned. The Installation manual
does a thorough job in specifying
minimum distances from magnetic
sources such as battery wires, speakers
and compasses.

I relocated my battery selector and wires
to the bottom of my panel. Happily the
fuses were already there. The radio was
also moved down into a hole vacated by a
Cambridge. The boat compass on the
glareshield was tossed - the hole now
accommodates PowerFLARM antennae.
In Canada the Air Glide qualifies as a
magnetic direction indicator.

Then there's the geometric requirements. I
leveled my glider according to the
Maintenance Manual directions for CG
measurement. Don't expect the panel to
be 90° off the level flight attitude. Most
likely it will be something else. Those with
a tilting panel with access behind the
panel accomplished by removing the
canopy and glareshield need to support
the panel with canopy removed in the
same position as when the canopy is in.

I cut a basswood plank from a hobby shop
for the ISU platform with bevels to fit the
panel and other side of the instrument
binnacle. A foam block raises the ISU to
just below the glareshield.

Once you have the ISU on the platform
and hooked up to the vario with the glider
leveled, you can use the info boxes to
show pitch and roll angles. Shim to get to
zero.

Nothing better to keep a glider
owner occupied over the winter.