RV-8 fuel starvation accident

[Russellmn]

Just a thought in the discussion of whether enough fuel could flow through that restrictor to get through a run up and takeoff... Don't we always turn on boost pumps before takeoff? What kinda pressure are you pushing with them? 30psi? More? Would it be enough?

6psi will supply a 500hp V8 through a -4 no problem...

[swift12]

Originally Posted by Russellmn

Just a thought in the discussion of whether enough fuel could flow through that restrictor to get through a run up and takeoff... Don't we always turn on boost pumps before takeoff? What kinda pressure are you pushing with them? 30psi? More? Would it be enough?

6psi will supply a 500hp V8 through a -4 no problem...

Mute point...it was a carburettor not injected so the float bowl will fill and the restrictor will easily fill the bowl for low power operations and a 1700 rpm run up is still low power...so it will show up when leaned out after takeoff when the float bowl is emptying.

[gasman]

An .040 reducer is OK for oil, and could be reduced in size, but it is really too big for gas. An .015 restrictor would provide fuel pressure (and the loss of it) and provide a greatly reduced hazard during a hose failure..... Instead of one size fits all.

If a .015 fuel reducer was installed in this situation, this accident would have never happened.

[airguy]

Originally Posted by gasman

If a .015 fuel reducer was installed in this situation, this accident would have never happened.

That's a very astute observation. Similar to ground leaning - lean it enough so that any application of power will bog down and make it obvious.

[scsmith]

Originally Posted by airguy

That's a very astute observation. Similar to ground leaning - lean it enough so that any application of power will bog down and make it obvious.

Another one of those posts that makes me wish we had a 'like' button