I’m not sure if something could have changed with prop angle when my prop & hub were overhauled and the governor replaced but I experienced something for the first time last night when I did my run up.
I have a 200hp IO360 with a 3-blade MT prop, Mt hub and MT gov. Yesterday as I was approaching 2000 rpm on my way to 2100 to cycle the prop the tail started to lift even with full aft stick (stick and elevator have full travel and were at the stop). I throttled back, moved the stick, verified visually I was getting full aft stick / elevator and tried it again...same thing happened. I ended up cycling the prop at 1950rpm and as soon as the pitch changed, the tail jumped a little.
I was at 1/2 fuel, solo and I don’t weigh much but the CG was near the middle of the envelope. The air was near standard conditions so my no means exceptionally dense (I’ve flown this plane many times in much denser air without this happening). I normally top off the tanks after every flight so being at 1/2 fuel was something different and of course a new governor and overhauled prop / hub are different.
I have a call in to the prop shop but was curious if this is common with other RV4s given the geometry of the plane and the chosen power plant.
Thx!
I have a 200hp IO360 with a 3-blade MT prop, Mt hub and MT gov. Yesterday as I was approaching 2000 rpm on my way to 2100 to cycle the prop the tail started to lift even with full aft stick (stick and elevator have full travel and were at the stop). I throttled back, moved the stick, verified visually I was getting full aft stick / elevator and tried it again...same thing happened. I ended up cycling the prop at 1950rpm and as soon as the pitch changed, the tail jumped a little.
I was at 1/2 fuel, solo and I don’t weigh much but the CG was near the middle of the envelope. The air was near standard conditions so my no means exceptionally dense (I’ve flown this plane many times in much denser air without this happening). I normally top off the tanks after every flight so being at 1/2 fuel was something different and of course a new governor and overhauled prop / hub are different.
I have a call in to the prop shop but was curious if this is common with other RV4s given the geometry of the plane and the chosen power plant.
Thx!