Prosaria wrote:....The D2 only gives you GPS ground track. The GRT unit I talked about above will act as a DG independent of the GPS with a remote magnetometer.

Squash wrote:I have my D1 mounted in the instrument hold using the adapter that comes with the unit. Then I connected it to ships power. It has a battery backup. You can see how it looks in this photo.

hotrod180 wrote:

hpux735 wrote:....Personally, I'm only interested in devices certified for primary instrumentation, because that's the only way to get rid of the vacuum system on a certified plane........

I assume that you're talking about for IFR use. The vacuum horizon & DG on both my old C170 & my old C150/150TD were optional per the factory equipment list, and I removed all that junk on both of them. They're also optional on my 1953 C180, and I've thought of pulling them out of this one also, but since it's more of a traveling machine I would like to have something "just in case". A Dynon D2 fits the bill for being light, simple, long-lifed, and also for having a bunch more tricks up it's sleeve than just attitude. It is also Wi-Fi capable so that the D2's GPS can feed a sectional-based moving map display on an ipad or similar. I don't have one now, but I might get one in the future to replace / supplement my G196.

Squash wrote:I have my D1 mounted in the instrument hold using the adapter that comes with the unit. Then I connected it to ships power. It has a battery backup. .......

Prosaria wrote:Yep the GRT does exactly what the D2 will do like you describe but....

hotrod180 wrote:

Prosaria wrote:Yep the GRT does exactly what the D2 will do like you describe but....

Maybe not. I googled up the dimensions of the GRT Mini-- it will not fit into a standard 3-1/8" hole, and with a 4.35" x 3.94" face it's too big to fit in the middle positions of a standard 6-pack flight instrument lay-out-- at least on my airplane. For me, the Dynon D2 looks like a better fit, more physically & capability wise. I don't know that I'd want synthetic vision on top of (or more accurately, underneath) the normal display-- the screen's already pretty busy with attitude/directional/airspeed/altimeter info.

glacier wrote:Take a look at Trutrak ADI too. They have pitot static connections but work fine without them; the pitot is for a low airspeed warning (nice, but not needed if you scan your airspeed instrument) and the static can just use cabin pressure.

They will fit in normal 3 1/8 or 2 1/4 holes, but probably do not follow along 100% spirt of this letter that GRT references, because there is no "mounting device" other than putting it in your panel:

http://www.grtavionics.com/PS%20ACE-23-01-R1.pdf

hotrod180 wrote:

Squash wrote:I have my D1 mounted in the instrument hold using the adapter that comes with the unit. Then I connected it to ships power. It has a battery backup. .......

How much does it stick out from the panel?
Dynon says 3.63" x 3.26" (face) x 1.16", but I don't know if that 1.16" is the thickness of the face or if maybe part of that 1.16 sticks through the 3-1/8" instrument hole.

hpux735 wrote:.... I recently read that there was a rule change that lets you (potentially) remove all the vacuum parts from your plane and go all-electric. This is cool to me because the vacuum pump MTBF is something like 500 hours, a vacuum-driven AI is around 1000 hours, and an electric gyro AI is a few 1000 hours. A solid-state gyro is more likely to be in the neighborhood of 10,000-100,000 hours. In addition, it'll weigh less, and won't have the parasitic load on the engine. Personally, I'm only interested in devices certified for primary instrumentation, because that's the only way to get rid of the vacuum system on a certified plane.....

Squash wrote:I have my D1 mounted in the instrument hold using the adapter that comes with the unit. Then I connected it to ships power. It has a battery backup. You can see how it looks in this photo.

Thread hijack alert: Nice helmet man! I have been looking closely at the Evo helmets and would appreciate any feedback from someone actually using them who is not selling them. If this question gets enough answers maybe we could move this to a new thread.

-M3X