Hi All,
Rotax tech support tells me that fuel pressure (PSI) alone dosen't mean much for
the 914. It needs to be compared to boost PSI. Must be 2.2-5.8 over boost.
When measuring boost in the intake manifold this only applies when there is
positive pressure in the manifold.
One easy way to see the differential is to use a twin manifold pressure gauge,
connecting one side to fuel (through a orafice) and the other to the connection
on the crossover tube. Just be sure that when at high throttle settings that
the needles are at leaset 2 inhg apart. This is a 3 1/4 instrument.
Another method is to install a differential pressure gauge. I have requested
one
of these from a manufacturer, they tell me that I will have one to test in
about 30 days. If all goes well, I will have a 1 1/4, and a 2 1/4 in a few
months.
I'll put in in the US web catalog when I have it, so please check there
for price, and availability.
Hope this helps!
John Hurst
Europa Aircraft
Lakeland, FL
USA
-----Original Message-----
From: Paul McAllister <paul.mcallister@qia.net>
Subject: Re: Europa-List: 914 Fuel Pressure Tranducer
Hi Tony,
I was thinking of monitoring my fuel pressure and having my engine monitor
alert me when it drops below a certain threshold. The idea was to try and
detect an impending fuel blockage before it becomes a problem.
Cheers, Paul
----- Original Message -----
From: "Tony S. Krzyzewski" <tonyk@kaon.co.nz>
Subject: RE: Europa-List: 914 Fuel Pressure Tranducer
>
>
> >> Can you tell me the VDO part number that is on your transducer as I
> need to purchase one as well.
>
> Is a pressure transducer necessary or would a pressure switch be better
> in this case?
>
> It's not the sort of thing that you need to monitor constantly but it'd
> be good to know when the pressure drops below optimum.
>
> Tony
|