I don=99t often disagree with you David but I think a fuel
pressure gauge is a very useful indicator of impending problems,
including filter blockage and fuel vaporisation. When the red light
comes on it is all too late.
Regards
Brian
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of
davidjoyce@doctors.org.uk
Sent: 27 May 2016 19:36
Subject: Re: Europa-List: Rotax 914 Airbox / Fuel Pressure Differential
Phil, I am all for minimising the time you spend eyes down, (having
experienced 5 mid air near misses with 3 probably fatal had I not been
looking out!). From this point of view, I would doubt the value of a
fuel pressure guage, as opposed to a low fuel pressure warning light,
which shines a bright red light at you if pressure falls below a set
level. To this end I sourced an on/off fuel pressure switch set to light
up if pressure fell below 3 psi (as I remember it - but it should be
easy enough to find a pressure well below normal running pressure and
above what will stop you flying). This worked well for me in running my
main tank dry. I found it came on in plenty of time for me to switch to
reserve before the engine coughed. It would also, I guess, work well if
you had a partially clogged filter and needed to switch on pump 2 and
reduce power to limp home, as happened to the company demontrator in
early days. I cannot think of any very good reasons to need a fuel
pressure gauge apart from these instances.
Regards, David Joyce, GXSDJ
On 2016-05-27 14:32, flyingphil2 wrote:
<flyingphil627-europastuff@yahoo.co.uk>
This is a question for those who have a 914 up at the front.
With the 914uls the best way to monitor fuel pressure is to monitor the
fuel / airbox differential pressure. I'm looking for a simple and
'tried and tested' way of doing this. Can anyone recommend a setup for
this? I see there are a variety of dual gauges available and also
gauges that do the calculation for you (via sensors) and just have a
single needle showing the differential.
Any input or advice of what other people have done would be welcome.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=456603#456603
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