Subject: new prop
From: ACRE NL
Date: 7/23/2001, 6:12 PM


    SNIP>>


Hi Paul/Guys;

The LAEV Project is almost "soup"...........with the
exception of the SHELL (Housing), which is 90% complete.
The hold-up is due to a hold on the Prop Flange
electrical contact assy...."THAT'S ALL!!"

Robin Ream wrote:

    Will this new prop also be enough for the 20B, and does anyone
have a
price estimate yet?

Robin


I would want to test it on a test stand with a 20B so that is not
this year for sure. If it works out for the 13B and Tracy is willing
to test a 20B on his test stand while he is building his new airplane
that would be a remote possibility. If you care to build a test
stand according to our sketches that might speed up the process.

You will also have to build your own blades. I think Bill will help
with
the design of the blades for a 20B. It will be a two blade for the
foreseeable future.

Paul Lamar


Bill Freeman wrote:

Paul & Robin,
  What HP and RPM do you expect for the 20B??   I need TO/Climb
values (max continuous RPM and HP) and cruise (~75" HP).  I suspect
that an increased chord will deal with it, and I have run a LOT of
versions.

     Butch -

 I have the max/min angles for the prop blades, calculated them
a few weeks ago but is has been so hectic (storm downed trees to cut up
and haul away, getting the EZ and ME ready for OSH, etc, etc) that I
haven't gotten them from my laptop to this computer.   Sorry.  I assume
that this is still not the critical path, *please* complain when it is
soon-to-be
the critical item.  I assume that Perry is the one that will need the
info.

Bill


Robin Ream wrote:

    My 20B is identical to Tracy Crook's, and he's considerably ahead of me
in his build.  Let's defer the best guess details to him.  The main
difference is that he's pulling an RV with his, and I'm pushing a Velocity
with mine.  Power and rpm's should be very nearly the same because we've got
clones firewall forward.  In the end, he will probably get a little better
performance per horse power because of prop room.  My pusher isn't nearly as
forgiving as his taildrager with respect to prop selection.

Robin

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