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Updated Dynon SkyView Software/Settings v15.4.7 for RV-12/12iS published

greghughespdx

Well Known Member
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Van's has published the updated SkyView software and settings for the RV-12 and RV-12iS aircraft to the download page on the Van's Aircraft web site. The new version released today is v15.4.7. The package available from the Van's web site includes both the Dynon software and Van's-provided RV-12 specific settings. RV-12 owners with Dynon SkyView equipment should download the new software/setting package from the Van's web site rather than from Dynon.

RV-12 related changes included in this release (Rev 14 06-18-19):

1) For RV-12iS using a 912iS Sport the .sfg for the fuel pressure sensor no longer needs to be loaded separately. This fuel pressure sensor is now part of the standard Dynon sensor file. Step 7 in the README file was removed and subsequent steps were renumbered.

2) For the RV-12iS an added feature to the latest SkyView software 15.4.7 provides a warning to the pilot if the temperature of the coolant/CHT exceeds 220 deg F and the RPM is below 2500 rpm. For further information read RV-12iS FTS Section III ?HOT WEATHER OPERATION.?
 
It's possible for the coolant to get too hot at or below 2500 rpm on the tarmac? Due to lack of air flow through the radiator, or lack of water pump circulating coolant fast enough?

Increasing speed to 2500 RPM to cool the engine is primarily related to creating higher volume of forced air flow through the radiator as is needed more often in high ambient temperature situations.
 
Increasing speed to 2500 RPM to cool the engine is primarily related to creating higher volume of forced air flow through the radiator as is needed more often in high ambient temperature situations.

Won't increased engine speed necessitate more braking action? Matco brakes on the 12 are prone to fading as it is - this becomes a problem with long taxi in a crosswind where one brake is used excessively to control direction. I'd hate to drag brakes to keep ground speed reasonable...
 
Won't increased engine speed necessitate more braking action? Matco brakes on the 12 are prone to fading as it is - this becomes a problem with long taxi in a crosswind where one brake is used excessively to control direction. I'd hate to drag brakes to keep ground speed reasonable...

The condition is most likely to happen when the aircraft is on the ground in hot conditions and not moving while at idle engine speed, hence not pushing any air through the radiator other than that generated by the propeller. Increasing airflow by turning the prop faster improves cooling. Also, the Dynon software simply enables an alert - There's nothing in the skyview software changes how the engine operates, ambient temperatures, physics or anything else. :) It's simply an awareness alert for your benefit. Another way to cool the engine of course is to move the aircraft itself through the air: Taxi or fly it.
 
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