Bill Boyd
Well Known Member
My oil pressure on the IO-540 is low to mid-20's at idle and 43 in cruise with oil at 210F. Not sure if I need to adjust this badly enough to remove the right rear baffle for access to it - what a royal pain! Engine builder says it's lower limits of normal but should be fine. My gut would prefer to see a higher number but what do I know?
My RV-10 cabin heat comes from only one muff split front and rear via a Y-connector in the tunnel. Several members here said this would be more than enough. I was a little chilly on the last flight even with the TCW heat servo wide open. See where this is going? De-cowled for an oil change and discovered that the heat selector valve is inop and fully closed. Iv'e been flying awhile with no cabin heat and just imagining it was working a wee bit.
The TCW Technologies servos for the oil cooler butterfly and cabin heat shuttle were both operational and calibrated for proper travel limits and direction at initial assembly. As part of my troubleshooting I swapped the controllers out on the respective harnesses. The oil cooler butterfly controller works on the oil cooler harness but not on the heat door actuator. The heat controller does not appear work on either actuator. It's almost like there's been a failure of both the heat controller board and the linear actuator given the way these components are behaving when swapped around. They draw power and ground from a common source so it's not that. I'm stumped but not giving up yet.
It's nice to imagine how great that cabin heat will be when it's actually turned on!
My RV-10 cabin heat comes from only one muff split front and rear via a Y-connector in the tunnel. Several members here said this would be more than enough. I was a little chilly on the last flight even with the TCW heat servo wide open. See where this is going? De-cowled for an oil change and discovered that the heat selector valve is inop and fully closed. Iv'e been flying awhile with no cabin heat and just imagining it was working a wee bit.
The TCW Technologies servos for the oil cooler butterfly and cabin heat shuttle were both operational and calibrated for proper travel limits and direction at initial assembly. As part of my troubleshooting I swapped the controllers out on the respective harnesses. The oil cooler butterfly controller works on the oil cooler harness but not on the heat door actuator. The heat controller does not appear work on either actuator. It's almost like there's been a failure of both the heat controller board and the linear actuator given the way these components are behaving when swapped around. They draw power and ground from a common source so it's not that. I'm stumped but not giving up yet.
It's nice to imagine how great that cabin heat will be when it's actually turned on!