HI Bob, perhaps you are going to experience even higher temp readings as we get later into the season. What was the air temp and humidity levels when you flew your Spark? The point I'm trying to make is if the temp readings are this high now and the summer season of pattern flying is coming, what can you expect? Just so you know, I document every flight including, duration, post flight voltage, milliamps restored following charging, length of charge time, post-flight pack temp, IR reading at end of charge cycle and post-flight motor temp. I do this because of what happened during the time I was transitioning from glow to electric 6 years ago. My mistake was to listen to people who "thought" they knew about electric flight, etc. It proved to be an expensive mistake. Basically, if possible, I leave nothing to chance. Over a period of time you can actually see the trend of the batteries as the age and slowly become unsuitable for my needs.
I am aware you can experience high amps with the Pletty Xtra 30-9 if you are not diligent. Personally, I don't use or trust the on board data log system. I guess it's OK if all you want is a "snap-shot". Now, if someone comes up with a true data log system that say stores the last 10-12 flights, I'd be excited about that. Bob, I know you know what your are doing. Just don't expect too much from this Pletty/esc/prop combination. Then and only then you run the risk of "smoking it"! Hope this helps you, Everette