Scott -

 

You are right.  I forgot that the engine compartment of my tightly-cowled Lancair is probably hotter than my old Cessna.  So a cooling blast tube to the regulator area is a good idea.  I'll do that, as it would be a pain to move the regulator now (not impossible, just a pain).  Not so worried about the battery but maybe I should be.  The failure mode there is more benign (short battery life) so I may just take that as it comes.

 

I had been concerned about cooling of the Dukes pump and the gascolator, which are both on the hot side of the firewall.  I bought a cooling shroud from Lancair but it was designed for the Lancair 4 fuel pump, I think, as it didn't come close to fitting.  If anyone has a suggestion for a pre-made part I'd like to hear it.  I'm not very talented when it comes to sheet metal work.

 

Finally, I have recently seen cooling shrouds for the engine mounted mechanical fuel pump in the catalogs, but I haven't seen one on an airplane.  What do y'all think about those?  Do we need them?

 

As for electrics, I forgot to mention that my hydraulic pump has its own breaker.  When you pull the breaker it also cuts power to the Bosch relays.  And I have a separate breaker for the pitot heat.  Everything else goes through the Control Vision power distribution system.  So I think I've met your criteria of everything having either a switch or a breaker to turn it off, but nothing has both except for the pitot heat.

 

Thanks for the comments, guys!

 

- Rob Wolf