-----Original Message-----
From: Doug owen [mailto:visfishdo@yahoo.com]
I have had the thermawing system installed by RDD  on my IV-P turbine a couple of years ago.

Doug,

Sorry to read about all the problems with your system.  These are experimental aircraft and aircraft systems and we all expect that there with be developmental hurdles to surmount.  I had the very first hot wing installation on a Lancair and it took a couple false starts to get it right.  Fortunately the heater work was done while I was in primer and the electronics work was all internal.  Now maintemamce is limited to replacing the drive belt every couple annuals ($20.00-ish) and a wipe-down to remove bugs from the leading edge.  The weather is changing in the Midwest and once again I am delighted to have the system on board.  Sure cuts out the pucker factor when climbing or descending through layers.

Since my installation there have been others on fat-wing Lancair brothers and recently on the RV-10, all with similar success. However I learned that installation on the skinny-wing turbine was quite different and the challenges were many, more with powering the unit than heater application.  I think your experience bears that out.  There may have been other IV-PT's more recent than yours with a better result.  Sure hope so because the added safety factor is great and the cost is relatively small.

Robert M. Simon
Hotwinged ES-P N301ES