Paddy,
I have an Elba fitted and I also have a Skydrive fuel pressure guage as part
of my instrumentation. I get 0.24 bar at max. full throttle on the ground
(5000 r.p.m.) even after fitting Skydrive 5mm shut off cocks upstream of the
filters to facilitate cleanng the filters away from home (0.28 before I
fitted the shut off cocks). This is more than the minimum of 0.15 bar
required for the 912, and was sufficient to satisfy Francis Donaldson
although no fuel flow check as such had been carried out.
Roger Anderson. G-BXTD.
----- Original Message -----
From: "Paddy Clarke" <paddyclarke@lineone.net>
Subject: Fuel Flow Senders
> Hi Folks,
> Has anyone else had a problem in achieving the required
fuel
> flow when using an Elba type fuel flow sender?.
> I've got a monowheel XS with a Rotax 912S. The electric
pump
> is the later [more powerful] version and I'm using an Andair gascolator
and
> selector valve. With no flow, apart from the bleed back, the pressure just
> before the last carb is 4.1 psi.
> If I do the required fuel flow check without the fuel flow
> sender in line the pump maintains over 2.5psi at the correct fuel flow.
With
> the sender in line the pressure drops to 1.2psi and the fuel flow drops by
> 30%, although the sender appears to offer very little resistance when
> blowing through it.
> Any ideas?
> Many Thanks,
> Paddy Clarke, U.K. builder
> #404
>
>
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