Hi Guys, I'm thinking of replacing the fuel pump in "Wren 44G" powered model, older gas start unit that originally came with larger pump (more for 80size) than an ideal for this tiny engine. I have replaced it couple of times with smaller units from different models (60size) engine running nicely but occasionaly quits at idle (trim only) on finals. After few discussions with turbine specialist the cause is most likely an old, getting worn out brushed pump (The heart of the model) to run such a delicate power unit.
In the meantime I have increase idle revs somewhat to see if it helps, as the idle thrust is minimum, not creating any issue in my case, but still haven't flown it as such or test run it.
Reliable pumps don't come cheap these days so I like to make sure I get the right gear to suit this unit.
Any suggestions for a reliable pump to match this engine? Thanks for any hints, Frosty.