Best mechanical method for Y junctions/splices

[jaredyates]

I'm in the planning stage for a dual 7" setup, with a single ADAHRS (for now), EMS, 429, ADSB, Remote mag, etc. My impression from reading the installation manual is that I'm going to have dozens of "y" shaped wire joints, since the two screens are connected in parallel in nearly all of their connections. How are folks typically doing these? Crimped pink AMP PIDG butt splices? How is it done inside of the dsub shell of the SV-NET-SPL? Am I mistaken about there being so many of these connections?

 

[n456ts]

For the Skyview network, there is a hub available (SV-NET-HUB) or you can use the older style Y splitters (SV-NET-SPL). Anything else on your aircraft, please don't use butt connectors. Soldered connections with adhesive lined shrink tube and secured correctly is far superior. You can connect two serial harness by crimping the two wires into a single pin at the D37 connector. It's a barrel crimp, so it will be fine. Digi-Key is also a good source for military grade terminals. I cringe every time I see photos with "automotive grade" terminals you buy at AutoZone. (Which no auto mfg would dare use).

 

[mrdaud]

Totally agree with n456ts!!! Solder with heat shrink. Not a single butt splice in my airplane. Best to use a non-acid flux and clean the joint with contact cleaner after soldering to prevent any chance of corrosion. The NET-HUB is definitely the way to go instead of having so many splitters.

Another good source for pins, connectors, etc. is Allied Electronics. I like their on-line catalog better. Steinair is also a source and is cheaper for machined pins (D-sub) and some connectors.

 

[jaredyates]

Sv-net-hub seems to have 9-pin connectors, is there a bigger version? The wires I'm concerned about are the ones that are not on the skyview network cable. For example: audio, serial, ground, usb, gps. It's on the order of 16 wires not counting any of the skyview network, which could be handled by the hub.

 

[jaredyates]

Also, which method does Dynon use inside their splitter? Perhaps I can use a similar method inside the 37-pin shell. It doesn't seem easy to get 2 22awg wires into a single dsub- is that what they are doing?

The crimp vs solder discussion is frequently hashed on the aeroelectric list, so I'll not address that aspect other than to say that Stein sells the splices too.

 

[n456ts]

I'll not address that aspect other than to say that Stein sells the splices too.

I can only lead you to the water. : I speak from many years of professional experience.

 

[Pobb]

Jared, Check this hub out http://store.makerplane.org/axis-15a-avionics-wiring-hub/

I used one of these for my avionics and switch grounds, as well a connection point for data leads from the avionics to the Dynon data leads, transponder and autopilot.

 

[vlittle]

Jared,  Check this hub out  http://store.makerplane.org/axis-15a-avionics-wiring-hub/

I used one of these for my avionics and switch grounds, as well a connection point for data leads from the avionics to the Dynon data leads, transponder and autopilot. 

Here is an example of the AXIS-25A version wiring hub. http://www.vx-aviation.com/sprocket/photos/panel_elec/schematics/EFIS.pdf

Vrrn

 

[jaredyates]

Thanks Vern, we're talking about you over at the Vans forum also: http://www.vansairforce.com/community/showthread.php?p=1117353

 

[c4c]

You'll said "butt spice"

(Sorry, just can't resist my inner 12 year old!)

DH

 

[jaredyates]

You'll said "butt spice" 

(Sorry, just can't resist my inner 12 year old!)

DH

At least we didn't say "duty."