Subject: Larry La Beau's Dyke Delta - First Flight 2
From: ACRE NL
Date: 3/6/2003, 10:29 PM


Bob White wrote:

I visited with Larry and his plane yesterday.  I asked him to call me
after he did his first flight.  He called this afternoon!  He just got
all of his paperwork done today.  While doing a high speed taxi run,
he
inadvertently lifted off, gained a couple of feet altitude, and sat
back
down on the runway.  Even though it was a short flight, he has been
airborne and made his first landing. :-)

He had some wheel shimmy problems he needs to look into before doing
another longer flight.  I asked him yesterday if he wanted to say
anything to the group.  He said "Tell them not to contact me."  Larry
really wants to spend his time testing and flying his plane, not
answering emails, etc.  He did spend quite some time with me showing
me
his plane and engine installation.   Thanks Larry, and good luck on
your
flight test program.

I will have some pictures available shortly.

Bob White

--
http://www.bobwhite-abq.com

Thanks Bob. Stress I guess. He'll calm down eventually :)

Paul Lamar

Bob uploaded a lot of pictures to his web site.
http://www.bobwhite-abq.com/labeau

I see only one serious problem. We have had a similar exhaust system fail
resulting in a non-fatal crash. The exhaust pipes need to be unwrapped
and shielded with stainless steel. Cooling air must be introduced between
the SS
shield and the exhaust tubes. The motor mount tube must also be shielded
from the high. High heat on the order of 1800 degrees F
weakens the exhaust tubes (and the motor mount tubes) and the vibration
of the mufflers will cause them to crack.

There should be some flex pipes between the mufflers and the the exhaust
tubes coming from the exhaust flange. The mufflers will need additional
support
as well. Car experience is not applicable in this case. The engine is
running at far
higher average HP levels. So too the temp of the exhaust pipes.

Bob, if you would call Larry and suggest he call Tracy to discuss this
with
him as Tracy has a tremendous amount of experience with this. Mostly bad!

Why the hell can't the FAA inspector see these things?? Damn!
We need to get these FAA inspectors up to speed on rotary installations.


Paul Lamar


-joe spencer wrote:

Paul,

I had a DD once and the pitot tube is not supposed to that close to the prop
slip stream

Joe- 

Good point. That will give you an optimistic airspeed reading which
could be dangerous.

Paul Lamar
 
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