Question on fuel tank plumbing

[Yadama]

Bearhawkers

I am installing the mains and aux tanks on my project at present and I have a question on the main tanks. In the photo below there is a hole that will accept a finger strainer (see red circle) can anyone tell me what this is plumbed to? The hole above i will use as a vent between the main and the aux. I'm thinking I need to blank this off if i plumb the aux into the sight glass (red circled area), is this correct?

[Battson]

Hi Yadama,

Not sure I fully understood what you wanted to know - but here goes:

There are two large ports at the bottom of the tank on the inboard edge, which accept finger strainers, these plumb into the fuse and come together at a tee joint to feed the engine.

There are two smaller points on the inboard edge, these are for the fuel sight glass if desired. If you aren't using a sight glass you can blank them off.

There is one large port on the outboard edge of the tank, one accepts a finger strainer for plumbing auxiliary fuel tanks into the main tanks. If you aren't using aux tanks you can blank them off.

There is one small port on the outboard edge of the tank, for an air vent line. If you aren't using an extra vent line you can blank them off.

Hope that helps.

Jonathan

[Yadama]

Thanks Battson

On your aircraft did you plumb into this outboard finger strainer port for the aux tanks or plumb the aux tanks into the sight glass as detailed in the manual?

yadama

[Battson]

I didn't use Aux tanks (NZ has a lot of Avgas pumps evenly spread around), so I can't help there sorry!

[jaredyates]

Sorry to be so late to reply, but I was just going through the old Beartracks and found that the article that covers aux tank plumbing is in the third quarter from 2005.

[Yadama]

Thanks Jared, found it..