I finally got my electric Impact in the air yesterday with the telemetry working. I thought the motor temp data was kind of interesting.
The sensor is on the back of the motor so it probably doesn't see and direct airflow but I'd guess there is a lot of turbulence inside the fuse. Anyway here is the info:

66F at turn on
68F at take off about 2 minutes later (Had to wait for a plane on the runway)
92F at 2minutes into the flight (a fairly linear fast rise)
99F at 6 minutes into the flight (lower rate of temp rise)
101F at landing and motor turn off which was 6.5 minutes after take off
124F at 7.5 minutes after take off - the peak temp
121F at TM turn off 8 minutes after take off

I should point out I was being a good boy and keeping the current down on the new batteries so most of the flight was at half throttle. The total consumption was only about 2 AH. I turned the motor off after landing because there was mud all around the plane so I decided not to taxi back. So it took me about a minute and a half to walk down and turn it off.

I believe the cooling in the air looks ok but I'm concerned about the rise after turn off. I guess one could say the internal temp of the motor must have been over 124F in order for the external temp to keep climbing after the motor was turned off. I'm not sure what to do about this if anything. How does one decide if he needs to improve the cooling in the air? What is the standard for acceptable motor temperature? Any thoughts.

Jim O