Harvey
Well Known Member
The engine -driven mechanical fuel pump on my IO-360 has failed, and I'm looking at replacing it with an electric one, such as the Andair unit.
Can I leave the mechanical one in place and simply bypass it or does it need fuel going through it ?
The other question relates to fuel flow vs pressure. The RSA injection system requires 28-30 psi and I burn around 70 litres per hour on takeoff. The Andair produces 30 psi and flows 64 litres per hour, and 150 litres per hour free flow or aound 5 psi.... Does this mean it is marginal at take off power if I need 30 psi and more than 70 litres per hour flow ? Or have I just answered my own question?
What have others done in replacing the mechanical pump ?
Can I leave the mechanical one in place and simply bypass it or does it need fuel going through it ?
The other question relates to fuel flow vs pressure. The RSA injection system requires 28-30 psi and I burn around 70 litres per hour on takeoff. The Andair produces 30 psi and flows 64 litres per hour, and 150 litres per hour free flow or aound 5 psi.... Does this mean it is marginal at take off power if I need 30 psi and more than 70 litres per hour flow ? Or have I just answered my own question?
What have others done in replacing the mechanical pump ?