I'm in WA, with Dynon just down the road. We have several Dynon employees in our EAA Chapter 84 and they have given us great support. I have a KR project to get to in about a year, but now building a Zenith CH-650 with 4 others. We ask Dynon many questions and get immediate answers.
As to the fuel flow issue, we were considering the injected version of Rotax 912, but opted for the carb version, and still have a return line. We looked at having both sensors to determine net fuel flow. The sensors are expensive. Per Dynon suggestion, we have only 1 sensor and will adjust that in the setup after we fly for the % of net fuel flow. Apparently this is easily done with the Dynon Skyview. It seems the primary supply line sends back a fairly consistent % of fuel back down the return line. Dynon said about 70% is the setting to start with, estimating about 30% will go back to tanks via the return line. Again, this is from Dynon suggestion and I have no actual experience. We did set up a double throw fuel switch so the return line sends back to the supply tank as we switch. Many others have only one fuel return line going to one of the wing tanks. That shouldn't matter. The Dynon has many, many features that I am just learning. Like never having to twist a dial to set a frequency on the radio. Just push the touch screen airport icon and load frequencies, then Dynon radio has buttons for Ground, Tower, Approach, Unicom, etc. Of course, there are dials to use if you want. If you see you are using less fuel due to tailwind, and want to extend your planned route, just touch airport icon further on and push button to tell you if you have sufficient fuel to get there. Over 100 pages in the user manual and it will take a bit to learn, but wow, what features and simplicity when you know how it all works. For my next project, the KR, I too am looking at options between Dynon and MGL. The Dynon package we put into the 650 cost $14,400 with two auto-pilot servos. That's a complete package. The Skyview itself is only $4K, but add ADSB, transponder, intercom, radio, gps, etc, etc, and it soon adds up to real money. I think the MGL is less expensive and as much as I love Dynon, I am on a tight budget. Having 5 people share costs on the 650 is very nice; I won't have that on the KR. I have more than a year to make decision on my KR project, but am reading anxiously and learning from all of you. Jim McGauhey Washington State
