I work in medicine, too (Biomedical Engineer). Yeah, a scrapped Bair Hugger
would be great, but I don't have one. That's basically what this gadget is,
although we had a partnership meeting last night and agreed to engineer
something ourselves as an initial attempt. I'm going out shortly to look
for a suitable $20 heater. I have a remote-sensing thermostat I can use to
maintain the temp of the distal end of the ductwork (that's the end that'll
be inside the engine compartment) to a level that should prevent starting
any fires.

I'll report back.

--
Bob (Chief Pilot, White Knuckle Airways)


"Doodybutch" wrote in message
...
Bob...

I work in medicine and I got an old patient air blanket warmer for free -
a
model that had been discontinued by the manufacturer. It's about 800
watts
and has a blower and heater and 3 inch plastic hose and is set at about 40
degrees C or 102 degrees F. Its a very sturdy metal floor unit with
wheels.
My R182 is hangered (unheated).

I modified the heater by putting an intake plastic hose rather than having
it take air from the room. I stick the output hose in the oil dipstick
access and the input hose in the left cowl flap and I leave it on all
winter
and I cover the cowl with a quilt.

The coldest mornings here are about - 25 degrees F but with this rig, the
engine is always a balmy 70-75 degrees and it heats the whole
compartment -
engine, battery - everything.

I have pulled the plane out in - 25 degree weather and fired it up with a
couple shots on the primer like it was the fourth of july.

It soulds like the heater you are considering is similar to this.

Regards,

DB