BrendAn

i remember a gas turbine backup generator on a minesite, somewhere in the goldfields. they had to make a tunnel of scrub in front of it with sprinklers , like a coolgardie safe. apparently it would not work properly with 45 deg heat going into the intake.

Been thinking about this . I will try the electric pump with the engine off tomorrow. That will tell me if it's vibration causing the problem.

not sure what you mean here. its a 2 seater

Yes, I admit I never took much notice before.

the chevy volt all electric car has been around for years before the current evs

i hope this doesn't start another 7 page argument but yesterday i actually read the form i have to sign for flying solo. there is a section at the bottom which says any pilot hiring the aircraft for solo training or personal use is liable for repairs or insurance excess if the pilot is found to be at fault for any damage to the aircraft

thats what erin patterson said

fantastic trip. how many hours flight time

Yes. I thought of that after I posted it. Trouble is in an xair the fuel pump is between the seats , anything I add in front of it would have to be in the cockpit .

No thanks. Don't want an extra fuel line running up to the motor. Or around the cockpit.

2 strokes don't use the vapour lock return system because they are not affected by vapour. Good suggestion but fitting the correct pump is the way to go. Thruster has supplied the facet model number so it will be an easy job.

Mine only floods on the electric pump if left too long at idle. 2000 rpm in my case. I don't have a pressure gauge but I think the pump might be a 6 psi . I will buy the facet model you mentioned above and fit that.

Fair enough. I only know raaus terms. And the training for use is exactly as turbo described with ga. Skippy is implying that you need the pump on to get full power at critical phases of flight. In training you are told it's only on as a backup in case the mechanical pump fails. It's just words I suppose. My latest xair has a 618 and if I leave the electric pump on too long at idle it overcomes the the needles and starts flooding. Will have to swap for a lower pressure pump or fit a regulator. Standard xair backup is a squeeze bulb, not much fun operating that if mechanical pump fails.

RA Airctraft, including self built are likely to have anything in their system, and in some cases producing less efficiency than the kit designer specified. RA "Boost" Pumps This implies a pump that boosts the pressure. If it really is a boost pump, and not just an incorrect name, this implies that a mechanical pump is fitted, but doesn't have enough capacity to supply fuel to the engine at full power. In this case if you don't have your boost pump working you could run the engine lean and get combustion chamber damage. (I suspect that people here are just mis-calling the name of the pump, but you never know. its actually the backup or secondary pump. if you need it to get full power then there is a problem with the mechanical pump. boost pump is not a term i have heard any instructors use.

this is exactly what we are taught in raaus turboplanner Posted 13 hours ago Electric fuel pumps on Basic (training) GA airctraft were introduced as an extra safety feature in the case of a mechanical fuel pump failure near the ground. The Check list was: Pre Start: Fuel pump on, check making pressure. After Start: Fuel pump off Pre Take Off: Fuel pump on, check pressure 1000 feet: Fuel pump off Pre-Landing checks (downwind leg): Fuel Pump On After landing: Fuel Pump Off