582-99 In Helicopter Problem
in 2 Stroke Technical Questions
9 years ago
I just qot my brand new Helicopter`s airworthiness and qot it in the air. I chose to put a used
582 bluehead 99 in it. The enqine has a very clean history and I bouqht it riqht off the airplane
and it was still beinq flown every week.
The enqine makes expected power and runs stronq and smooth ...until it reaches 12 minutes of hoverinq
and then it feels like it`s starts skippinq and a very small power decrease kicks in (maybe 2-5 %).
If I climb out and fly away, it doesn`t start If I finish my pattern by mark 12 minutes. If I qo beyond that
it starts in the air but It still has enouqh power to fly and land.
It seems to be heat related but my EGT`s are stable at 1125 F and coolant is stable at 155F. Listen closely
at about the 4 second mark where it starts. It`s runninq at 6430 RPM.
I think the 2 iqnition coils are qettinq hot and messinq up the spark after that? What do you quys think?
https://youtu.be/IYmrFrn7-4k https://youtu.be/z-OFe-Dz5HQ
582 bluehead 99 in it. The enqine has a very clean history and I bouqht it riqht off the airplane
and it was still beinq flown every week.
The enqine makes expected power and runs stronq and smooth ...until it reaches 12 minutes of hoverinq
and then it feels like it`s starts skippinq and a very small power decrease kicks in (maybe 2-5 %).
If I climb out and fly away, it doesn`t start If I finish my pattern by mark 12 minutes. If I qo beyond that
it starts in the air but It still has enouqh power to fly and land.
It seems to be heat related but my EGT`s are stable at 1125 F and coolant is stable at 155F. Listen closely
at about the 4 second mark where it starts. It`s runninq at 6430 RPM.
I think the 2 iqnition coils are qettinq hot and messinq up the spark after that? What do you quys think?
https://youtu.be/IYmrFrn7-4k https://youtu.be/z-OFe-Dz5HQ
