So I'm getting ready to start building this, as my plane will be in the shop for February as my mechanic builds some new wheel pants and performs the conditional. Currently juggling a few options.
Option 1 - Joe's Solution - Fab a new tube
I am consulting my RV-6A plans for building the pitot tube. It looks like an AN-832-4D union protrudes from the wing and is coupled to a flared aluminum tube on both ends.
My parts list:
1. Vans pitot tube kit. Includes flared aluminum pipe, AN-819-4D sleeve, An-818-4D nut. I would probably bend this downwards and maybe cut it a little bit. Or just get some aluminum tubing. Vans part # VENT-P-100
https://shop.vansaircraft.com/cgi-b...337343-128-6&browse=airframe&product=ss-pitot
2. AN-832-4D coupler
3. AN-934-4D nut
4. 25' of 1/4" OD pneumatic tube
5. 1/4" tube to 1/8" male NPT adapter (for connecting tube to Dynon)
View attachment 6998
Option 1A -
6. Screw a 1/4" Female Pipe to 1/4" tube fitting to the AN-832-4D to join a pneumatic tube directly with the pitot tube. Gently run the pneumatic tube through my wing and directly to the Dynon. Could be an issue if I ever have to take my wing off.
Option 1A seems the easiest to me.
Option 1B -
Per plans, join a flared aluminum pipe to the interior side of the AN-832-4D and run the pipe along the wing to the wing root. I guess this would be sturdier than running just a pneumatic tube the whole way?
Requires aluminum pipe, AN-819-4D sleeve, An-818-4D nut, snap brushings.
I suppose the aluminum pipe can later be joined with the pneumatic tube using an adapter. I couldn't quite tell by the plans how that happened.
Option 2 - Replace with Dynon -
Purchase a Dynon heated pitot kit, run a new pneumatic tube using the Dynon tubing kit, and sell my old pitot tube / heater.
https://www.dynonavionics.com/aoa-pitot-probes.php
Pros: Don't have to drill any holes.
Cons: Would probably require recalibration of my pitotstatic system. Slightly more expensive in parts.
I am now leading towards Option 2 as it seems the least destructive, although recalibrating the pitot system seems a bit daunting to me.
Option 3 - Mimic Advanced Systems AOA Sport -
Rather than installing a probe, make a small hole on the underside of the wing and join the pneumatic tube directly with that hole, like in rv8ch's kit.
I am not sure if the Dynon AOA is sensitive enough to register this, or if there is some aerodynamic property that would warrant bringing the AOA probe away from the wing skin. If it doesn't work, then I would have a rather useless hole on the bottom of my wing.
Option 4 - Adapt RV-12 AOA installation N 16-12-14
https://www.vansaircraft.com/service-information-and-revisions/n-2016-12-14/
This is for the RV-12 so the exact placement on the -6A is not known.
(Posting as a new post so I can upload the drawing)