RFSchaller
Well Known Member
I live in Phoenix. My 12 was licensed in 2012, and it’s pretty much the original design with D180 avionics. In summer I frequently get CHT and Oil temperature alarms during climb out, and sometimes I just can’t fly when it gets above 90F..
A few weeks ago I made some modifications suggested by my friend, Adam, at Flying Cacti flight school. I trimmed 3 1/2 inches from the lower cowl aft edge in the area of the cooling air outflow, installed two small deflectors just forward of the the edge on the outside to create a low pressure area at the air discharge and wrapped my muffler in a thin layer of exhaust insulation. Since then I have been flying in 98F temps and not picked up alarms although I still get into the caution range sometimes on climb out.
As an aside, Adam showed me the 12is his school is using, and he told me the relocation of the oil cooler and radiator have eliminated the overheat issue in the 12is.
A few weeks ago I made some modifications suggested by my friend, Adam, at Flying Cacti flight school. I trimmed 3 1/2 inches from the lower cowl aft edge in the area of the cooling air outflow, installed two small deflectors just forward of the the edge on the outside to create a low pressure area at the air discharge and wrapped my muffler in a thin layer of exhaust insulation. Since then I have been flying in 98F temps and not picked up alarms although I still get into the caution range sometimes on climb out.
As an aside, Adam showed me the 12is his school is using, and he told me the relocation of the oil cooler and radiator have eliminated the overheat issue in the 12is.