| Winter Kit |
The standard cabin heat set up in my previous M-4 and M-5 provided no comfort for winter
operations. With some small cabin heater modifications I can fly without gloves and my parka
unzipped at -20*F.
For the winter of 09-10 I have used a combination of the baffles shown in the pictures. Early in the
year I installed the front cylinder baffles. They help keep the CHTs up in below O weather. I have
had them on at +40F and the CHTs run in the 350 - 360 range. Most of the winter I have run with
the front inlet taped of and the air tunnel to the oil cooler and carb removed. This helps keep the oil
temperature up and supplies warmer air for the carb which supports better fuel atomization. At +40
the oil temps will get to 210F. At O degrees F the temps run around 170F at 65% power. If I'm going
to be flying in temps below 0 I install the baffle shown above. At -20F the oil runs at 165F and the
CHTs around 300F. The one problem I do have is when I fly into a layer of warm air. The temps will
raise high enough that I have to throttle back or even land to remove the plate to keep from over
heating CHTs and oil temps. It would really be nice to have a movable cowl flap.
year I installed the front cylinder baffles. They help keep the CHTs up in below O weather. I have
had them on at +40F and the CHTs run in the 350 - 360 range. Most of the winter I have run with
the front inlet taped of and the air tunnel to the oil cooler and carb removed. This helps keep the oil
temperature up and supplies warmer air for the carb which supports better fuel atomization. At +40
the oil temps will get to 210F. At O degrees F the temps run around 170F at 65% power. If I'm going
to be flying in temps below 0 I install the baffle shown above. At -20F the oil runs at 165F and the
CHTs around 300F. The one problem I do have is when I fly into a layer of warm air. The temps will
raise high enough that I have to throttle back or even land to remove the plate to keep from over
heating CHTs and oil temps. It would really be nice to have a movable cowl flap.