Dual Pumps Required?

[Av8r_Sed 82]

I'm using a backup electric pump which I haven't really needed yet other than to fill the carb bowls after maintenance.  I also have a fuel pressure gauge (1" UMA) with a Mallory Fuel Pressure Isolator so I'm not running a pressurized fuel line into the cockpit.  Wish I had a good fuel flow meter, but it's not worth hundreds to me.

Sed, you must have one like this?  UMA 1-1/4 MECHANICAL FUEL PRESSURE GAUGES NON-TSO  

Yup, that's the one I'm using.  

For about $200 cheaper, I will stay with the boat fuel pressure guage.

Geez, I didn't look at the current asking price.  It wasn't like that in the last century when I bought it.  I'm with you on the boat gauge.

[EDMO 1078]

Well, my 2nd Gold Series Facet pump came in today, so going to hook up two of them in series and hope at least one of them keeps pumping!  Now I will get the boat pressure gauge and T it into the line to the carb.

EDMO

Edited 23 Jan 2016 by EDMO

[TJay 1041]

Is it gonna fly by this spring?

[EDMO 1078]

Is it gonna fly by this spring?

No Way!  Too many disasters at home to take care of!~  Ed

[Ironman Al 35]

I've read what you all said about different pump set ups! My question is, Will a in line fuel pump work, or pump past the mechanical pump on a 912 Rotax if the mechanical pump fails? Thanks, also, will fuel flow past mechanical pump on gravity if pump fails?

[Av8r3400 1179]

Al, from my understanding, yes and yes.  That is barring some type of perfect catastrophic failure internally of the mechanical pump.  Anything is possible.

[dholly 718]

Agree.  The Rotax 912 pump fails open by design. If you have a high wing you may be able to fly from a gravity feed, but not at full throttle. If you have an electric aux fuel pump turn it on immediately, obviously. There was a lot of chatter about this very problem a few years back on the Rotax owner forums when a bunch of crap fuel pumps hit the market.

Edited 18 May 2016 by dholly