Pitot in tail of Waiex

[Spaceman]

Roll Servo in wing (picture from underneath, main spar at top of photo)

Ah that looks nice. If I hadn't already closed up my wing that would be a great solution! I don't think I could get all that installed through the inspection panel, and I definitely don't want to drill out and remove the whole wing skin. At this point I guess it would be less effort to put in some kind of access panel either in the floor under the seat, or just on the seat pan itself. I haven't planned that far ahead.

[T41pilot]

Chris

I plan to use either the rear spar carry through or the aft lower seat support as a mounting position for the linear actuator. Since the seat back is hinged, it can be removed for servicing that area. Your upholstery solution would have to accommodate a seat back removal. I also contemplated having an inspection plate in the seat bottom as well. Unless you suffer from the princess and the pea syndrome, you should never feel the mounting screws through the upholstery.

[thomas]

I'm really intrigued by what Kip and Brian have done with moving the pitot to the stabilator. If there are no performance issues with this modification, I would like to do the same with my build as I have visions of damage to the wing-mounted pitot from hanger rash.

I've tried searching the forum but I don't see where Kip may have shared if there are any attitudes where the prop wash alters the indicated airspeed. If somebody who's asked Kip the same question could chime in or point me to the right thread, that would be much appreciated. I know the Xenos has a similar setup but, because it has larger stabilators, it seems there is less chance of prop wash interference than with the Waiex.

Thanks!
Paul

[N111YX]

Paul, the only time I have an error in airspeed reading is waiting to takeoff with a slight crosswind and the propeller blast gets blown over into the pitot. It may show 15-20 mph when standing still. Once I'm rolling, there is no adverse effect. I have no regrets in putting it in the tail.

There may be picture on this website from long ago but my pitot tube is removable and slides into a phenolic block that is riveted to the outermost rib. I tapped the phenolic for a nylo-seal pitot line.

By the way, my static system consists of a 3/32 inch hole drilled into the static port shipping plug on the back of the Dynon. Pretty simple and works great. Altitude is within 50 feet of an IFR system (formation check) and airspeed is within 2%.

Regards,

[N111YX]

A little video from a few years ago...

https://www.youtube.com/watch?v=kKxCEWkGX34

[Bryan Cotton]

Here is the original thread with Kip's pictures.
viewtopic.php?f=15&t=927

I copied what Kip did very closely. There are pictures in my build thread.

[N111YX]

Good find, Bryan. I thought those pics were here:)

Here is the original thread with Kip's pictures.
http://www.sonexbuilders.net/viewtopic.php?f=15&t=927

I copied what Kip did very closely. There are pictures in my build thread.

[thomas]

Thank you, Kip and Bryan!

The crosswind scenario on taxi sounds manageable. I've been saving photos of both of your builds but your feedback was the confirmation I needed to move in this direction.

Thanks for blazing the trail and sharing the knowledge!
Paul

[Area 51%]

For what it's worth...I also copied Kip and Bryan and have a Waiex you can put an eye out with.

Can't post here, but PM me your email address and I'll send you pictures of my installation. Biggest difference between mine and theirs is I used rivnuts and screws to attach the block.

[thomas]

Fantastic - thank you! PM sent. Paul