This is my first posting on the LML.  We have completed the "flyoff" of a
Lancair 4P Turbine.  I was warned by various fans of the Lancair aircraft
that I should allow extra time at each fuel stop for "crowd control" as the
bird attracts plenty of attention.  I am frequently asked questions about
the concern over "hot starting" the turbine engine.  One of the many
upgrades on our turbine 4p is the Limiter sold by VR Avionics.  I was asked
by a Lancair buyer to post this info to the LML, so here goes.  The limiter
activates a fuel-derichment valve to eliminate the possiblity that the gas
turbine could cause damage to the engine by exceeding the maximum tempature
allowed at start up.  At this point in time, VR Avionics  (VRAVIONICS.COM)
has a unit that will limit the interturbine temperature (ITT) during the
start sequence to prevent 'hot starts'.  I am informed that the unit is
upgradable and future versions will incorporate more features. The unit is
worth its weight in gold as sold, so we were not concerned about future
upgrades when we purchased the limiter.  The current unit acts as a start
sequence controller, engine protection limiter and engine parameter
monitor/recorder.  The last feature allows you to download the start data
onto a computer.  When we first started the engine we were watching for
abnormalties and we were able to email the data regarding the intial starts
to Diemech Turbines for review.  In my humble opinion, anyone building or
flying a Lancair Turbine would be foolish not to have a limiter.