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). You can run the returns just through the root rib, but it's somewhat = better to run them to the far outboard end, similar to the way Van has = you run the vent line. It gets the warmer fuel outboard, away from the = pickup, and positions it in an air pocket, so there won't be any = backpressure on the return line. You can also run the pumps for a few = minutes to aid in mixing the oil into the fuel if you're using premix. = As for the size, there's no need for larger return lines than what you = ran for the supply, though it certainly wouldn't hurt. I'd run AN-6 = size for all the fuel lines. =20 Cheers, Rusty (video's were cool Bob) ------=_NextPart_000_0163_01C617A0.370F17A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message

I was wondering about the returning it = to the far=20 end of the tank, I believe that in my configuration, (long skinny tank = in=20 leading edge) there would be some 'hangup ' of fuel that is returned and = has to=20 flow back down the tank to the pickup bay. I haven't decided on what to = do=20 yet.

Bill Schertz
KIS Cruiser # 4045

----- Original Message -----
From:=20 Russell=20 Duffy
To: Rotary motors in = aircraft

Sent: Thursday, January 12, = 2006 4:37=20 PM

Subject: [FlyRotary] Re: return = lines

OK! So = what size?=20 Already have 1/4" vent, 1/2" supply. Should the return be larger then = supply,=20 similar to oil return lines? Don't want to have to do it three times = (like I=20 usually do)

Hi=20 Tom,

Yes, you=20 need to run return lines, unless you have some sort of header tank = that can be=20 used for the return. I believe we can probably all agree that = it's best=20 to go back to the tank though. If you use a system like Tracy = has, where=20 you feed from only one tank, then you can return to only that tank as=20 well. If you think you might ever install a duplex valve to = feed/return=20 from both tanks, then you'd better install a return on both tanks = now. =20 (You're welcome Rich <g>).

You can run=20 the returns just through the root rib, but it's somewhat better to run = them to=20 the far outboard end, similar to the way Van has you run the vent = line. =20 It gets the warmer fuel outboard, away from the pickup, = and positions it=20 in an air pocket, so there won't be any backpressure on = the return=20 line. You can also run the pumps for a few minutes to aid = in=20 mixing the oil into the fuel if you're using premix. =20

As for the=20 size, there's no need for larger return lines than what you ran for = the=20 supply, though it certainly wouldn't hurt. I'd run AN-6 size for = all the=20 fuel lines.

Cheers,

Rusty=20 (video's were cool Bob)

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