What is the Stock RV-4 Fuel System?

We have an 0-290 (125hp) installed.

Is the standard fuel system L & R feed simultaneously to the engine like in a Cessna 150? If not, why?

Also, what is the standard fuel pump, is there only 1 electric one?

Thanks!

airduct said:

We have an 0-290 (125hp) installed.

Is the standard fuel system L & R feed simultaneously to the engine like in a Cessna 150? If not, why?

Also, what is the standard fuel pump, is there only 1 electric one?

Thanks!

Click to expand...

The o-290, series 1-3, and likely many others, has an accy case gear driven mechanical pump. Also there should be an electric fuel boost pump as a backup, also helps prime etc, although it is not required and many certified piston aircraft have a mechanical fuel pump only.

The RV-4, being a low wing, does not pull from 'both'. For a numbers of reason discussed on the the forums. Its either left or right.

Hope this was helpful.

thx for quick reply, need a little more info...

Thanks for the quick reply. Could you direct me to the forum threads that discuss why RV-4's don't feed like a simple C150? Does it have to do with aerobatics or something?

Also, did Van's ever specify a specific fuel pump when used for boost?

If you feed from both tanks and one runs dry (unports), the pump will simply draw air from that tank.

Facet Pumps

The boost pump supplied by Vans is a Facet...... not very expensive. Available from Vans, aircraft spruce and the like.

Forget what Cessna did, you are dealing with an RV4 they are completely different animals with different systems.