Alex Clark
Registered User
Life Long Alaskan
The other night up over the Harding Ice Field (6000 ft) my RPM started to creep up. I kept pulling it down, but it slowly won the contest and was at 2500 rpm with the knob pulled all the way out. Of course I throttled back and slowly headed for home. ( oil temp ok and oil pressure OK, fairly new oil and filter, engine at 118 smoh)
And of course it suddenly started to work on its own a few minutes later.
My IA and I later did all sorts of things trying to get the symptom to repeat but nothing happened. A couple other flights were fine as well.
Then last night it started again. I kept on pulling and it kept slowly creeping up in rpm. And when I was back on the lake I had to pull the controls WAY OUT to get the blades to twist at 2000 RPM.
My current Gov is a Woodward A210680, that has been rebuilt a couple times. I am running a P-Ponked engine and a 3 bladed Hartzell. I think I read someplace or another that the A210680 was OK for the 470 engine case at 2600 rpm, but after being Ponked with the 520 jugs, the new RPM red line was moved up to 2700.
Anyway I need to find a good shop that will swap me out for a rebuilt Prop Gov before I loose any more money. Any good shop suggestions...???
And of course it suddenly started to work on its own a few minutes later.
My IA and I later did all sorts of things trying to get the symptom to repeat but nothing happened. A couple other flights were fine as well.
Then last night it started again. I kept on pulling and it kept slowly creeping up in rpm. And when I was back on the lake I had to pull the controls WAY OUT to get the blades to twist at 2000 RPM.
My current Gov is a Woodward A210680, that has been rebuilt a couple times. I am running a P-Ponked engine and a 3 bladed Hartzell. I think I read someplace or another that the A210680 was OK for the 470 engine case at 2600 rpm, but after being Ponked with the 520 jugs, the new RPM red line was moved up to 2700.
Anyway I need to find a good shop that will swap me out for a rebuilt Prop Gov before I loose any more money. Any good shop suggestions...???