That is for max rated load. Does a RV-9 load the tires to max?Attached is a guide based on number of tire plys.
Only if they have a TOGW of approximately 3000 lbs.That is for max rated load. Does a RV-9 load the tires to max?
I have run 45 psi in all of mine for many years now and that seems to work great.Did a search for tire pressures, and similar to "what oil to use", there are many different opinions, but for a -9, is 35 psi a good overall pressure to inflate the tires?
Paul
Just be prepared for potential main gear vibration. Higher pressures reduce gear leg dampening. I ran 32-35 psi for 15 years and never had and gear vibration. Based on posts here, I increased my pressures to 38-40 and got some pretty significant main gear vibration. I have since added wood strips to my main gear legs to act as dampeners. Now I am running 35-38 psi with no issues. I will probably let it migrate to 40 psi as the weather heats up (and tire pressure increases with the temp) but don’t feel the need to go above 40.Thanks everyone for your answers; I'm going to try running 45 psi. Appreciate your recommendations.
Paul
Truth.Just be prepared for potential main gear vibration. Higher pressures reduce gear leg dampening. I ran 32-35 psi for 15 years and never had and gear vibration. Based on posts here, I increased my pressures to 38-40 and got some pretty significant main gear vibration. I have since added wood strips to my main gear legs to act as dampeners. Now I am running 35-38 psi with no issues. I will probably let it migrate to 40 psi as the weather heats up (and tire pressure increases with the temp) but don’t feel the need to go above 40.
I start at 60 psi. When I get to 45 psi add air. Never a shimmy. First set of tires changed at 450 hrs. (Mains) Nose wheel at 600 hrs. still ok. I do have my nose wheel break out force on the high side of the spec.Just an update on running 40 psi on my -9. Braking caused extreme shimmy, so this weekend changed back to 35 psi. I felt the vibration, but someone filmed one of my landings, and it appeared the 2 tires were angry with each other!
Haven't flown, but I'm hoping this will not happen again. I have to research why the tires shimmy so badly when lightly applying brakes. Is there a solution to minimize this?
Same here on the taxi to fast alarm. I’ve been running 45 lbs for 20 years…Truth.
My nose gear has a "taxi-too-fast" alarm that now goes off at exactly 18 knots groundspeed with tire pressure at 45 or above.
This was also my experience.Balancing tires. My experience is the main gear tires out of balance create more nose gear shimmy than the nose wheel out of balance.