What size and what weight is the Dynon EFIS? Face size is 4.090 wide and 3.390 high. It is made to fit in a standard 3 1/8 panel hole. What you are looking at in terms of screen area is larger than an existing artificial horizon. The manufacturers intent was for someone to be able to remove a horizon and plug and play. I've heard people on the RVlist be flying in a little over an hour after arriving at their hangars with this unit. All you have to do is supply external power, ground, pitot and static. I went with the internal lithium battery that is rechargeable whenever external power is connected. It supplies a minumum of 2 hours of normal operation. Weight with the internal battery is 1.75 lbs., without is 1.35 lbs. www.dynondevelopment.com or www.dynonavionics.com
Here is pic showing the instrument at work http://rvflying.tripod.com/dynon4.jpg Starting from top to bottom, left to right. The top shows a heading of 355 degrees, DG, left is a airspeed tape and digital readout. You can show either or both. To the right of airspeed is the angle of attack. Airspeed is not the best way to moniter optimal approach or takeoff speeds. I will use the AOA extensively. In numerical presentation just above and to the right of AOA is VS (VSI). This is shown numerically with an arrow. If you are climbing the arrow points up and the number is shown in green. Descending, and the arrow points down and the number is shown red. Above the arch is a lateral line with arrows on each side. This is the turn coordinator. A yellow lines moves out to show a standard rate turn. If you exceed a SRT, the scale changes. The arch shows your degree of bank in 10 degree increments. The lateral bars again show 5 degrees of pitch. The ball on the bottom is your skid ball. Airspeed is on the right and once again you can show it in tape, digital or both. The g-meter is not shown as I have not subjected the unit to any to show. The voltmeter does not show as external power is not supplied in this pic. Timer, well I have the clock showing. You may think this is cluttered and would be difficult to discern information but that is not the case. It is very well presented and in a very logical and easy to dissimilate manner. This thing also outputs through a serial port constantly during operation so you can record everything you see on the head using standard ASCII and columned using speadsheet programs such as Excel. I know, someone is going to say, "you are putting all your eggs in one basket and electron stuff goes bad", so I'll go a little deeper to answer as many questions as I can. I'll take current electronic over mechanical most any day. Over the last couple years I have had my airspeed indicator, both mags, one vac. and altimeter worked on. Not a great track record. For VFR, throw this thing in and forget it. If something fails look out the canopy and fly on. For me, I am replacing my IFR Bonanza with this airplane so I am going to equip the panel with redundancy. My power will go to a battery bus then main bus which will supply through a diode an essential bus. The essential bus is switch coupled to the battery bus. If something happens to the alternator or a short developes somewhere outside my essential side, all I do is switch off the main bus and switch on the essential bus. The diode prevents back powering of the main bus. If this does not work, the Dynon still has an internal battery. Now, again remember I am replacing my IFR Bonanza so what else I am adding is expensive but it is airplane money that already exists. I already have the Grand Rapids EIS 4000 engine monitering system www.grtavionics.com I am installing their flat panel color screen that will be upgradable to a primary flight data EFIS. Initially I will only use the engine monitering system. I will mount the regular EIS screen on my panel to display additional engine information. This unit also accepts an external backup battery supply. Neither the Dynon or Grand Rapids use external GPS data, they are totally self contained. My Garmin 430 will be coupled to a Trutrack vertical speed, altitude hold autopilot www.trutrakap.com that will shoot the entire approach including holds and misses. As a backup to above, my plan until new stuff comes out, is to use a remote pclightsystems.com egyro3 or pcefis. This system is more of a hand held type system that gets it initial power from the airplane but runs for several hours on an internal nive volt. It derives is info for heading from an external GPS, in my case my Lowrance Airmap 100. The pitch and roll comes from a small electronic gyro and is very accurate. This would be used only in an emergency. For this to happen my alternator must go bad at the same time my battery blows up at the same time my Dynon craps the bed or internal battery goes belly up, by Grand Rapids gets a case of the squirts and doesn't display engine information. Now, if the PCflightsystems unit also goes bad at this same time.........well I figure the ol air traffic controller upstairs just pulled my squalk code. OH BTW, all this would have to happen when I was solid IFR also. Just for reference, by RV will be gloss black with gold trim, tinted canopy to go along with all this glass color panel. OH, the cost of the Dynon that replaces all those steam guages........$2261.79 shipped to my front door with EFIS-D10, internal battery, external (it has an internal one) magnetometer and flush mount bracket. I know this was long but experience on another list, by many people, has proven a disdain for electronic stuff over stuff that has worked, somewhat in my opinion, for 60 years. My answer to that is something from Van's, "We used to start cars with a crank, but we sure wouldn't want to have to do that again" Dana Overall 1999 & 2000 National KR Gathering host Richmond, KY RV-7 slider/fuselage Finish kit ordered!! Buying Instruments http://rvflying.tripod.com do not archive >From: air2st...@aol.com >Reply-To: KR builders and pilots <kr...@mylist.net> >To: kr...@mylist.net >Subject: Re: KR>More Fun Friday pics. >Date: Fri, 15 Aug 2003 22:23:32 EDT > > What size and weight? >_______________________________________________ >see KRnet list details at http://www.krnet.org/instructions.html _________________________________________________________________ Tired of spam? Get advanced junk mail protection with MSN 8. http://join.msn.com/?page=features/junkmail
