Dynon Avionics - Planning the Installation (Ep44)

Planning the installation for the Dynon Avionics in my Zenith Super Duty. This is a shorter update because all I've done today is fabricate some mounting brackets for my Dynon Avionics. As in my other kitplanes this is the part I enjoy the most-designing and fabricating small mounts or brackets.
With the Lycoming engine, the Super Duty starts to get nose heavy so I want to mount some of the avionics further back in the plane instead of behind the panel. This just helps move some weight aft. Also, with things like the ADS-B, transponder, and comm radio mounting them further aft means I can have shorter antenna cables and those cables don't have to be bundled with other wires.
PRODUCTS I'VE USED:
Antislip Tape: amzn.to/2TzU32s
Adel Clamps: amzn.to/3ztVsI0
Snap Bushing (you NEED these): amzn.to/3gryDfm
Dremel Flap Wheel: amzn.to/3ztmXle
Air Hose: amzn.to/3wrqezA
Air Hose Fittings: amzn.to/3iIf2dB
Paint Gun (works GREAT for smaller parts): amzn.to/3vqDgMa
Air Filter for Paint Gun: amzn.to/3iHhfX2
USB Data Port (for Dynon): amzn.to/3iLsiOL
My Microphone: amzn.to/35likMa
Paint Mix Cups: amzn.to/2RSM4gc
Fly Cutter (for fuel sender): amzn.to/3gvgXzO
#dynonavionics #avionics #zenithsuperduty #kitplane

[@chetcampbell]

42 is usually the right answer, according to Doug.

[@duanestace6303]

Hahaha, Love the calculations Mark!

[@jvon811]

Fairings for speed and performance! Finally, you can keep up Brian and I! 😉

[@KitplaneEnthusiast]

Justin I didn't want to have to say this in public, but when I fly with your RV or Brian's Glasair, I've been pulling the power back just so I don't embarrass you when I go blowing by at close to 300 mph!

[@n206ja]

Love the "fuzzy math" calculations!

[@Know-Way]

The key words there are "antenna feeders". That's the coaxial cables and terminations. If the cables are good quality and pre-terminated than your all set so long as there properly seated. If you will be terminating the cables then a bit of time at KZbin University along with your natural attention to detail will likely produce a similarly safe outcome. Another great video ! Thanks.

[@KitplaneEnthusiast]

Thanks for the comment!

[@davidrobins4025]

Those calculations at the end of your video made "total" sense. I can see why you would need a "calculator" for accuracy. Your build is coming along nicely - thanks for sharing your progress.

[@KitplaneEnthusiast]

Normally I can do that math in my head...but I didn’t want to show off!

[@generalcanby5847]

Great Job Mark. Answers many questions I have as a first time builder ...

[@Project2Aero]

The swivel mount is a cool idea!

[@Laserdoc905]

Perfect timing as I am putting in the same component's on my Cruzer. Hope you do a video on the autopilot install as I have no idea how to mount those servos. :-)

[@albertotamborrel]

Me too!

[@LTVoyager]

If you mount the antenna on the outside of an aluminum airplane, you will have very little radiated energy from the antenna making its way inside the airplane. And as long as you use good coax cable and terminate it properly, you will have little radiation from the cable. Your location should be fine in your metal airframe.

[@KitplaneEnthusiast]

Thanks that's what seems to be the consensus so far. I think I will mount it and forget about it!

[@LTVoyager]

@@KitplaneEnthusiast The concern is real in an airplane made of fabric or composite as the EM radiation passes through those materials largely unattenuated. A metal airplane is much less susceptible, other than through windows, so the concern is greatly reduced.

[@daverobinsonTnT]

You could probably include a fine copper wire mesh screen that is electrically bonded to structure to cover any very large cutouts that aren't covered under your seats but I don't believe you'll have any, as the seat base supports the cushion. Cannot really see any RF energy issue* * Since it is made from metal, aluminum sheet has the power to block radio waves. The thin sheet of metal acts as a shield and blocks the RF EMFs from reaching you.

[@challenger2ultralightadventure]

You forgot to carry the 1 to the power of "C" divided by "Pi". But close enough anyways. LOL Cheers from Winnipeg.

[@ExperimentalAircraftChannel]

@Kitplane Enthusiast... Have you considered painting/priming your seat rails under your seats? (Even if just a light coat of clear). I have seen others some time later and they are VERY rusty.

[@KitplaneEnthusiast]

I def will not prime them as the primer probably won't stick well. But rubbing them with some oil is probably a good idea.

[@flyingkub]

Apr 1st again. :-) Good video and a bit of fun.

[@wb6anp]

Is there any problem with having the radio itself within 3 ft of the antenna, I know about the 3 ft separation of antennas,

[@keen1994]

What’s going on with the landing gear? Did they offer a fix?

[@umatgreyhound]

Hey Mark, Why use the homemade brackets under the Dynon trays. Is it for cooling, access or both? Just wondering why you didn’t attach the trays directly to the skin. BTW your landing math was incomplete. By adding the average density of bird travel per cubic mile, I come up with 42.6 units of knutzens improvement. 😜

[@KitplaneEnthusiast]

George I can't believe you made such a basic mistake! The average bird density travel only applies to low wing airplanes due to the wings being closer to the center of the Earth. So obviously this would not apply to my Super Duty. For the trays, I did not want to rivet them to the skin for two reasons. First, the rivet head would be on the out side of the airplane of course. So the tail (or squeezed) part would be on the tray side. The tail of that rivet I think might stick up too far and interfere with the radio or transponder sitting in the tray. The second reason is simply because if I ever had to remove or relocated the radio or transponder, then I'd have to drill out three painted rivets on the outside of the plane. Drilling out rivets on a painted plane is no bueno!

[@umatgreyhound]

@@KitplaneEnthusiast Thanks. I knew it was simple but couldn’t see it. Thanks for the wisdom.

[@homertalk]

Will you be selling your cruiser when you new plane is finished?

[@KitplaneEnthusiast]

No

[@johnreed8872]

Hey Mark! Unfortunately your figures are incorrect. The Pythagorean theorem should be applied between earth curvature effect and Coriolis sine!! Stick to what you know and leave the engineering and calculus to professionals like me and Mike P. Thanks for the update and tips! Blue Skies brotherman!

[@KitplaneEnthusiast]

Dang it I always forget to consider Coriolis!

[@johnreed8872]

@@KitplaneEnthusiast quick question...is the level cruise flight attitude the same, ( or close to it ) as the ' static ' on the gear attitude?

[@johnreed8872]

Also.. laser or bubble or both?

[@davidrobins4025]

Hilarious.

[@KitplaneEnthusiast]

Not really. I notice the Cruzer flies with a nose low attitude. I adjusted the AHRS mount as close as I could and then used the settings on the Dynon screen to adjust it so it showed level during normal cruise.

[@markrap327]

Math is fun......

[@jsullivan05]

Not the dangerous kind of "radiation", there's nothing harmful from EM waves, the reason they don't want the signal radiated in the plane is because it will severely limit its range, water for example absorbs EM radiation quite easily (how microwaves work to heat up your food), so a human body sitting right above the antenna would pretty much completely block the little signal that was able to make it out of the craft.

[@KitplaneEnthusiast]

Thank you!

[@wb6anp]

not true, but at our power there is no issue. Biological effects can result from exposure to RF energy. Biological effects that result from heating of tissue by RF energy are often referred to as "thermal" effects. It has been known for many years that exposure to very high levels of RF radiation can be harmful due to the ability of RF energy to heat biological tissue rapidly. This is the principle by which microwave ovens cook food. Exposure to very high RF intensities can result in heating of biological tissue and an increase in body temperature. Tissue damage in humans could occur during exposure to high RF levels because of the body's inability to cope with or dissipate the excessive heat that could be generated. Two areas of the body, the eyes and the testes, are particularly vulnerable to RF heating because of the relative lack of available blood flow to dissipate the excess heat load. But they are talking high power stuff, as a Ham radio operator I have to be concerned with rf exposure, not only to the body but also interference. I usually run 100 watts so not much harm, but some operators that have amps can run 1000 watts.

[@markleightonson1770]

Yes, transponder emissions can cause cancer.