Hi, fellow rotary enthusiasts.  I am building an SQ2000 canard pusher

with a

13B. I have two
strake fuel tanks that would be considered "mid-wing". I plan on

having a

fuel line from each tank
into my approximately 2 gallon sump tank, and from there it will go

to the

fuel pumps, fuel rail,
and to the regulator.  My question is, is it best to have the unused

return

fuel from the fuel
pressure regulator go back into the sump tank, or run a seperate line

back up

into one of the fuel
strake tanks?
    I am getting ready to put the top on the second strake tank, and

it would

be best to install
any and all fuel lines before the top goes on permanently.
     Thanks so much for your suggestions. Hope to see as many

rotaries as

possible at Sun-N-Fun
soon.   Paul Conner

On my Cozy, I installed one 3/8" return line to each tank. The cozy has

one

2qt sump blister under each tank. I will be running one supply line from
each sump to shut off valve, than small gascolator for the water and

heavy

contaminants, electric fuel pump and after that in to Y to the engine.

All

the return fuel goes in to my left (Main) tank. Fuel level control will

be

done by:
Start and taxi on the left main tank
Take off both pumps (both tanks) running
Cruise switch tanks when left goes down. The return fuel fills it

slowly, so

I go back to left tank...
At least that's my plan.
--

Bulent Aliev
Ft Lauderdale, FL

Hi, Bulent....thanks for the posting....I discussed this with the designer

of my SQ2000 and he advised against it, stating that in the event I failed
to closely monitor my fuel levels, (forget to switch tanks), that the
continuous overflow of unused fuel from the right tank into the left tank
would cause a problem once the left tank becomes full. It would then start
pumping fuel out of the vent line of the overfilled left tank.He said that
if I go with that system, I should have a pump which will allow fuel
transfer between tanks.
      Dave Atkins suggested that there is a fuel selector that will send the
return fuel back to the tank that is selected. Makes more sense.
      Then, of course if I go with the sump tank, fuel will only be pumped
into the sump tank regardless of which tank I am using, or even when running
on both tanks. Hope this helps. Keep building.....we need more rotary
powered pushers in the air.  Paul Conner

 
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