After plugging the connection to the EFIS1 Pitot port I made another flight today.  The OAT was about 8 degrees cooler so - surprise  - my oil & coolant temps were about 8 degrees cooler too.  That and a working ASI made this flight a lot more comfortable.

I did collect a little more data this time but now I really see the value of data logging.   Back on the ground I constantly find myself wishing I had written down a different sensor reading under a different condition.

The air temps I'm measuring under the cowl are much hotter than I want to see, probably due to insufficient CFM of cooling air.  I haven't measured the pressure recovery in my diffusers but indications are that they aren't going to be what I was hoping for.  Either that or the pressure under the cowl is much too high.   Always in need of more data.  Next flight will be made with the dynamic pressure port probe in place under the cowl.

I'm still a little concerned about the high turning resistance of my 20B engine when hot.  When cool, it feels normal.  This has not changed in 14 hours of engine run time.   Any of you other 20B users notice anything like this.  Is there any significant difference in the way the engine feels when pulling the prop through when hot and cold?  

Tracy