Engine or Prop Control Issue?
in 912iS Technical Questions
11 years ago
I just took delivery of a Pipistrel Virus SW with a 912iS Engine and constant speed prop controller. I have seen an issue that I am trying to troubleshoot.
I can get the RPM up to 5500 on takeoff using the fine pitch control, however, if I land and then try to takeoff again, I cannot get more than 4800 RPM unless the aircraft is shut down and wait a few minutes.
I also notice that when pushing to full power on takeoff, there is a definite lag in the power before it starts to increase. When the RPM's fail to get above 4800, not only is there a lag, but there is a noticeable difference in the sound when it goes to full power, which is obviously because it is not running the same RPM's.
I am suspecting the prop controller or fuel injection.
Could use any comments or troubleshooting suggestions.
Shane Mitchell
I can get the RPM up to 5500 on takeoff using the fine pitch control, however, if I land and then try to takeoff again, I cannot get more than 4800 RPM unless the aircraft is shut down and wait a few minutes.
I also notice that when pushing to full power on takeoff, there is a definite lag in the power before it starts to increase. When the RPM's fail to get above 4800, not only is there a lag, but there is a noticeable difference in the sound when it goes to full power, which is obviously because it is not running the same RPM's.
I am suspecting the prop controller or fuel injection.
Could use any comments or troubleshooting suggestions.
Shane Mitchell
