Speed Sensor Question
 

Please watch this video, I'm not sure why I'm not getting any reading on airspeed.

http://www.my87.com/video/cruise.wmv

Do i have this setup properly?

RE: Speed Sensor Question
 

Hello,

Well it looks like the sensor board is plugged is correctly or you would not have a speed display. I assume blowing that much air would make it register, it only takes a fraction of a PSI. I normally just blow on it with my mouth (with no witnesses around!)

Make sure the pitot is clear (that is, make sure the straight port 1 is clear). Then make sure you have it connectod via the tubing, to the correct port on the sensor.

Is the sensor board mounted remotely and connected to the ECU via a servo extension, or is the hose long and the sensor board mounted near the ECU?

Also, is this a 4.x or 5.x ECU?

THanks

RE: Speed Sensor Question
 

Matt, I don't have a way of knowing which tubing plugs into which port on the sensor so I tried both. Same results. The tubing goes all the way back to the pitot. There is no servo lead extension, the sensor is plugged direction to the ECU. It's a brand new P-160 bought last month. I have no idea if it's 4. or 5. ECU.

I guess I could pull the tubing and blow thorough the tubing, however, It's brand new and I've never seen a blockage (I guess I could have zip tied to tight somewhere, I'll check that.

If it's not an air flow problem, can I send the sensor and pitot to you all to check out? Roughly how much money am I talking to do that?

When you say you blow on it are you saying litterally in your mouth? I'm not embarrased, I'll stick this thing ANYWHERE to get it to work. ;)

RE: Speed Sensor Question
 

Ideally, you should leave the pitot hooked up as it is. Pull the tubing off of both of the sensor board ports. Blow through the front port (Port 1) of the pitot tube with your mouth and make sure it is clear. It does not matter if it is a little pinched, as when the system is running, there is no air flow going through the tube, only pressure.

Take the tube that you heard the air coming through and connect that to port 1 of the sensor board.
Leave port 2 open for now.

Turn on the system and then blow on it again. If it is still not indicating, then call Bob to make sure I have not missed something obvious. He will take care of fixing it if needed.

The difference between a 4 and a 5 is a hard plastic case. The reason I asked is that I am not familiar with the 5.0 and I would not know if I am missing something with a 5.0.

Good luck,

RE: Speed Sensor Question
 

Are the ports on the sensor board marked? Can you give me a visual as to which is which ?

RE: Speed Sensor Question
 

Sure thing, take a look at the pic in my first post, port 1 is the port more oriented towards the center of the sensor board.