Originally Posted by
Vettster
Wow!! that must have been freaking exciting!!
"reo" has had a similar experience with the pump running away in the air. Full throttle all the time I believe he said.. Since then he has added a separate power switch to the fuel pump that can be turned on/off via the Tx instead of the ECU.
Sorry for being off topic.
An enjoyable couple of seconds, yes...
What happened was the ecu controller for the pump failed close, which pretty much causes the pump to operate at full battery power regardless, potentially over full throttle even.
Ecu no longer had any control. This happened because I forgot the fuel shutoff valve (which was after the pump) closed while attempting a gas start. Ecu pushed and pushed but there was no rpm increase, then the circuit overheated and failed. While I know exactly why this happened, I also had friends experience this in flight. A cutoff switch is certainly a wise thing to install should this happen.
And yes, sorry for the OT
