REFLECTOR: STD-RG Performance

[Dave T Nelson]

I embedded some answers below...

Dave

Dave T. Nelson
T/L 553-4327, Voice 507-253-4327, Fax 507-253-3648
Program Director, ISC ECAT NPI & Test Engineering




----- Message from David Smith <dwsmithaircraft at yahoo.com> on Tue, 20 Nov
2012 14:07:37 -0800 (PST) -----
                                                      
      To: "reflector at tvbf.org" <reflector at tvbf.org>   
                                                      
 Subject: REFLECTOR: Early model Velocity RG Engine   
          Cooling                                     
                                                      


Dave,
My experience has only been with Ezees and Long Ezees, and recently helped
a friend for several years with a Lancair IVPT. I can't afford one of those
and think I prefer the simpler and far more economical Velocity.
Does your top NACA extend into the roof of cabin? Yes, it does.  However
it's not much.  The thickest part of the NACA is very far back, well behind
any passenger's head.  The part that could be by someone's head is thin
enough to be no factor.  And... who cares?  You won't be back there!  :-)

Do you have any pics you can send?  Not handy, but send me your email and
I'll try to get you some.

Also you confused me on the exhaust, your statement; "keeps the entire
exhaust inside the cowl and exits aft of the prop", aft of prop? or just
aft of prop extension? If you've been around long's much you've probably
seen this kind of exhaust.  It's entirely within the normal cowl.  No bumps
or protrusions at all.  The exhaust exits from within the cowl... the
exhaust tubes are cut maybe 6 inches forward of the rear cowl lip, directly
behind the prop.

Can you send pics of this as well. Yes - I've got those - send an email
address.

You also stated and someone else as well that the right scoop was used for
induction air. Correct.

Also mentioned earlier was the "Cold side of cylinder air". Both of my
inlets appeared to be used for engine cooling only with a ram air scoop on
bottom, (that stuck down an out into airstream) for induction but I am
converting to a smaller NACA. If your induction air is coming from the
bottom of the airplane, it's more likely to be picking up rocks, debris,
etc.  Yuck!

I was also working on smooth streamlined fitting main gear doors and am
trying to design a smaller wing mounted door to completely close wheel well
opening. As far as everything else, Clean, Slick, Light, and smooth flow
has been high priority second only to safety. Sounds good!

David Smith dwsmithaircraft at yahoo.com
Message: 1
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