Sky View fuel levels

[fieldbaren]

I have a Rv6 with Dynon SkyView. tried to calibrate the fuel level as per the manual; no success, decided the senders were 20 yrs old and needed to be replaced. Went through the calibrating procedures with the new senders.(resistance type, Vans.) According to the mechanic helping me he wasn't able to put in the 19 gals that the RV6 is supposed to hold in each tank; at any rate, he was able to add about 16 to 17 gals in each tank. The tank levels show 15+ in one tank and 14 in the other! plus it appears,
I'm not sure anymore, that when on the right tank the left one appears???? to go down. I say appears because in level flight the levels seem to back and forth.
I saw in one forum where they started out by putting in the first two gals and calling that zero.
I sure would appreciate it if any of you have any ideas!
thanks
Marc Barenfeld
fieldbaren@comcast.net

 

[DBRV10]

FOLLOW THE INSTRUCTIONS and it works. It is that simple.

If you have an RV6 did you set the aircraft up in the flying attitude? Tail wheels need to be calibrated with the wings in the flying state. Nose wheels should also be done in the flying attitude too. That does not equal level ground ;-)

Lastly, from memory the RV6 holds 68 Litres or 18 gallons maximum per side. Due to the dihedral of the wings and the fact the float can only go up so far at the wing root, yet you can keep filling the higher portion of the tank, it will max out around 3 gallons early.

You will always get a 14 or 15+ result.

 

[airguy]

The fuel level sensors are quite accurate and sensitive near the bottom of the fuel capacity, where you want them to be. With the dihedral of the RV wings, when the tanks are full the float sensor is at the end of its travel and cannot sense the last few gallons - this is a limitation of the float sensor, not part of the Dynon system. The Dynon display will show 14+ or similar, inidicating that it's more than 14 but it can't say how much more - because the float sensor is at the end of it's travel. As the level comes down to the point where the float arm comes off the stop it will begin indicating correctly.

In flight, if you are burning from the right tank and showing the left decreasing, you may have the sensor wire inputs reversed for left/right. If it's just a short term temporary up/down, it may be due to not flying coordinated and the fuel is going to the outboard end of the tank and away from the sensor.

 

[fieldbaren]

FOLLOW THE INSTRUCTIONS and it works. It is that simple.

If you have an RV6 did you set the aircraft up in the flying attitude? Tail wheels need to be calibrated with the wings in the flying state. Nose wheels should also be done in the flying attitude too. That does not equal level ground ;-)

Lastly, from memory the RV6 holds 68 Litres or 18 gallons maximum per side. Due to the dihedral of the wings and the fact the float can only go up so far at the wing root, yet you can keep filling the higher portion of the tank, it will max out around 3 gallons early.

You will always get a 14 or 15+ result.

yes

The fuel level sensors are quite accurate and sensitive near the bottom of the fuel capacity, where you want them to be. With the dihedral of the RV wings, when the tanks are full the float sensor is at the end of its travel and cannot sense the last few gallons - this is a limitation of the float sensor, not part of the Dynon system. The Dynon display will show 14+ or similar, inidicating that it's more than 14 but it can't say how much more - because the float sensor is at the end of it's travel. As the level comes down to the point where the float arm comes off the stop it will begin indicating correctly.

In flight, if you are burning from the right tank and showing the left decreasing, you may have the sensor wire inputs reversed for left/right. If it's just a short term temporary up/down, it may be due to not flying coordinated and the fuel is going to the outboard end of the tank and away from the sensor.

 

[fieldbaren]

First of all, yes the RV6 was in the level position when calibrated. and as far as flying in uncoordinated in a RV6, you would have to work pretty hard to do that, especially over a period of time; in a Piper J3 that would be easy to do!! I'll look at the wires being crossed but somehow I doubt it.
Thank you for your replies I really appreciate your input.