yankee-flyer
Well Known Member
During the CI last November I followed all the posted information and moved my oil radiator about an inch forward. Naturally there's been no way to see if that did anything until yesterday.
OAT at runup 87 F, grass strip, 2 adults and 10 gallons fuel. Off the ground in less than 1000 ft (previous airplane was an AA-1, no WAY that would have happened), climbed at 75 Kt IAS to 4250 IA (DA about 5500). Last year the oil temp would have been at the top of the yellow arc or just into the red by 3500 IA-- yesterday it just hit the bottom of the yellow arc and dropped back to 220 deg as soon as we leveled out and got into cruise mode.
All of you in the build process be sure you have at least in inch between the back of the oil radiator and the closest point of the muffler. Lots of variables in how the muffler is fitted. how the lower cowl is trimmed and how the oil cooler duct is trimmed. It's a LOT easier to get that right the first time than it is to go back and do it later.
MANY thanks to those who figured out the problem, engineered the fix, and posted all the info and photos. This group is great!
Wayne 120241.143WM, 186 hours
OAT at runup 87 F, grass strip, 2 adults and 10 gallons fuel. Off the ground in less than 1000 ft (previous airplane was an AA-1, no WAY that would have happened), climbed at 75 Kt IAS to 4250 IA (DA about 5500). Last year the oil temp would have been at the top of the yellow arc or just into the red by 3500 IA-- yesterday it just hit the bottom of the yellow arc and dropped back to 220 deg as soon as we leveled out and got into cruise mode.
All of you in the build process be sure you have at least in inch between the back of the oil radiator and the closest point of the muffler. Lots of variables in how the muffler is fitted. how the lower cowl is trimmed and how the oil cooler duct is trimmed. It's a LOT easier to get that right the first time than it is to go back and do it later.
MANY thanks to those who figured out the problem, engineered the fix, and posted all the info and photos. This group is great!
Wayne 120241.143WM, 186 hours