I used an AN fitting on the AL tube and a plastic fitting with ferrules to the plastic tube. Both went to NPT, one male and one female, joined together to form an adapter.
Yeah, thats probably how certfied airplanes would do it. I think those plastic ferrals are prone to leaking... after 25 years or so. You should be good for awhile.
But the vent doesn't have to hold any kind of pressure, thus it's a vent. Pressure lines are a different story. I do agree however that flexible hose is plenty for the Pitot, since it doesn't exactly run high pressure.
RV_7A said:Im very curious and hope someone can tell me this. Any idea what type of pressure we are talking about in the pitot line at 200mph? 1, 2, 3 psi? I'm just looking for a close estimate.
fabulous except for the price, and the fact that you can't get the tubing out through the snap bushing without cutting the connector off and thus shortening it...just my 2 cents, KISS and use silicone sleeving.Bob Collins said:fabulous connections
I went with the silicone hose I used because printed on the outside of it is "for instrument use only" (if I'm recalling correctly). I used the stuff that is intended for air instrument tubing.szicree said:Any reason you went with this particular type of tubing? I'm planning on a similar setup but would prefer to use something a little thinner walled (passing through a grommet).
I'm probably struggling unnecessarily with this. I've just read several dozen forum posts but can't quite find the answer. I have the SafeAir1 pitot air kit and an Evans Aviation pitot tube (unheated). I'm wondering why I cannot buy (I think) an AN8153D union which has 3/8" thread both sides and screw one side directly into the pitot mast and the other into the platic tube coupling doohicky shown above. Do I need to have a short length of aluminium tubing, and if so why? Surely it is just a whole load of additional connections that could/might failure. Why add potential failure points? Am I missing something here? Other than having the correct connectors at the moment!!Bob Collins said:
If you are talking about the plastic tubing, sure you can, you just press in on the little black ring sticking out/up, this releases the pressure on the tube and you can remove it from the fitting.dan said:...and the fact that you can't get the tubing out through the snap bushing without cutting the connector off and thus shortening it...
200 mph CAS = 0.7 psi pitot pressure, roughly speaking.