Hi, all....just an update regarding the changes made to the SQ2000. I
did a couple of flights (one interrupted flight due to fuel pump fuse
failure).  Changes included building an airfoil shaped leading edge
entrance to the NACA duct, installing an aluminum plate underneath the
radiator to help better seal the plenum, and removal of the thermostat.
    Upon reaching the end of the runway, my water temps were around 120
degrees instead of the normal 160 to 170.  Temps during climb rose
slower. Upon reaching 7000 feet, my water temps were back up around 195
and oil temps were up to 190, Somewhat disappointing.
     Outside air temp at airport was 79 degrees.  Temps during the
descent dropped to around 140 degrees.  Temps during level flight
stabilized around 180, but I am displeased with climb temps.  There are
a few more gaps to be sealed around the radiator and the oil cooler,
perhaps this will bring the climb temps down a little more, but not
certain. One other experiment I may try is to add VG's in front of the
duct, or to add the corner dams as Klaus Savier and Marc Boron have done
with their NACA ducts.
    The plus side of all this is that the engine is running like a
swiss watch, and is very smooth at all throttle settings. Idle is rock
solid at 800 rpm's (approximately 400 prop rpm's).
    Thanks to all who offered advice and suggestions. I will post more
results as the experiments continue. Unfortunately I am temporarily
grounded until I receive a replacement fiberglass  nose gear strut, as
mine has a hairline crack lengthwise causing nosewheel wobble during
landing rollout.   Paul Conner, Mobile, AL


Hi Paul and Pual,
First of all congratulations on your first flights. Keep at it and you will get
there. Paul I have a few questions that I would like to ask you which is related
to the SQ2000 not rotary. If you would like to talk to me then you could contact
me off the news letter on ddunbar@echidna.id.au


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