How can I show fuel added in flight from aux tanks

Juvat

Member
Joined
Sep 9, 2012
Messages
42
Location
Goodyear, Arizona
I have a Skyview system and Dynon EMS in my RV-8. My airplane has the SafeAir1 4.5 gal aux fuel tanks in each wing tip. The way they work is the main tanks must burn down at least 4.5 gallons, and then I pump fuel from the tip tanks into the main tanks.

My questions are:

1.  Is there a way to update the Dynon fuel management system--in flight--with the increased 4.5 gals per tank? I don't want the system to read 4.5 gals too low because I am unable to tell it the actual new fuel level due to more fuel being added to the main tanks during flight.

2.  Please confirm that the Dynon fuel level sensor will see the increase of 4.5 gals per side when I pump them full again from the tip tanks.

3.  Does anybody else have Skyviews and SafeAir1 aux tanks like me? If so, could you please share your experiences and any tips?

Thank you!
 

jakej

Well-Known Member
Joined
Oct 10, 2007
Messages
2,121
Location
Adelaide, Australia
Karl

1. Tell the Fuel Computer the total amount on board - this is different from Fuel Level

2. Yes, the Fuel Level gauges will see the change

3. yes, but the above basically covers it all

HTH

Jake J
 

jnmeade

Active Member
Joined
Oct 9, 2011
Messages
313
Location
Eastern Iowa
When I flew a Cessna 401 with 6 tanks, we had gauges on the mains (tip tanks), gauges on the aux tanks and no gauges on the locker tanks. You could draw fuel from either the mains or the aux tanks but you had to pump the locker tanks to the mains. (You had to draw the mains down first to hold the contents of the locker tanks or because if you were drawing off the aux tanks the fuel return lines went to the mains.)
Is it a good idea to show the total fuel on board if some of the fuel is being tankered and is not available to the engine unless transfered?
The Cessna solution was to not show the tankered fuel.
 
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