914 Turbo Question
in General Tech Discussion
6 years ago
Hello,
When oil temps are hot (above 95 °C) and I use full throttle (115%) and full rpm (5750 rpm, that's the hard limit of my constant speed prop). Under these condiions MAP rises to just above 40 and then drops to 35, then it jumps up to 40 and back down again. This oscillating behavior continues indefinitely and is accompanied by proportional power surges.
Testing on the ground shows that the wastegate opens and closes in sync with the MAP needle.
Anyone knows what's causing this?
Thanks
Please help
I didn't find the right solution from the Internet
References:
https://www.rotaryforum.com/forum/rotorcraft/general-discussion/976888-914-turbo-question
When oil temps are hot (above 95 °C) and I use full throttle (115%) and full rpm (5750 rpm, that's the hard limit of my constant speed prop). Under these condiions MAP rises to just above 40 and then drops to 35, then it jumps up to 40 and back down again. This oscillating behavior continues indefinitely and is accompanied by proportional power surges.
Testing on the ground shows that the wastegate opens and closes in sync with the MAP needle.
Anyone knows what's causing this?
Thanks
Please help
I didn't find the right solution from the Internet
References:
https://www.rotaryforum.com/forum/rotorcraft/general-discussion/976888-914-turbo-question
