REFLECTOR: Reflector Digest, Vol 44, Issue 75- Gear up landing

Mark Riley anriley at comcast.net
Sat Jan 26 09:01:33 CST 2008


Terry:

My condolences. I did the same thing in 2000 at Vero Beach. I felt worse
(and more stupid) than ever before or since. Hang in there- my engine was
fine after totally destroying my MT prop. In fact Velocity bolted on a new
prop and flew it out the next day. I think the whole fiasco cost me about
$2,000 other than the new MT.

Mark

-----Original Message-----
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Sent: Saturday, January 26, 2008 8:26 AM
To: reflector at tvbf.org
Subject: Reflector Digest, Vol 44, Issue 75

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Today's Topics:

   1. Re:  pasty hardener (Al Gietzen)
   2.  Velocity video (Al Gietzen)
   3. Re:  pasty hardener (Jack Prock)
   4.  Lower cowling- exhaust holes (Tom)
   5.  On focus (Terry Miles)


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Message: 1
Date: Fri, 25 Jan 2008 20:02:02 -0800
From: "Al Gietzen" <ALVentures at cox.net>
Subject: Re: REFLECTOR: pasty hardener
To: "'Velocity Aircraft Owners and Builders list'"
	<reflector at tvbf.org>
Message-ID: <000001c85fd0$35385660$6401a8c0 at BigAl>
Content-Type: text/plain; charset="iso-8859-1"

Andy wrote:

I have found that keeping the hardener in the warming cabinet shortens the

useful life

 

That was my experience also.  It darkened more rapidly, I guess due to
oxidation of the amines, or whatever.  The other factor is that the reaction
rate when mixed goes up exponentially with temperature, so it kicks off much
more rapidly at 95 F than at 75F which significantly reduces pot life.  At
95 F, if you don?t use what you mixed in about ? hour it begins to thicken
and doesn?t wet out as well; whereas at 75F you might have 3 times as long.
Yes, at 75 you will get some crystallization after some months if you are
not using it; but a short term warmup to 110 or so and stirring gets it back
in shape.  Each time I added resin or hardener to the pump, I heated it
prior to pouring it in.  Kept things working well ? never had to empty and
clean the pump.

 

I did on occasion put mixed epoxy in the freezer, and could warm it up and
use it a day or two later.  Also works for epoxy primers and acrylic paints.

 

FWIW,

 

Al

 

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Message: 2
Date: Fri, 25 Jan 2008 20:54:59 -0800
From: "Al Gietzen" <ALVentures at cox.net>
Subject: REFLECTOR: Velocity video
To: "reflector" <reflector at tvbf.org>
Message-ID: <000001c85fd7$9ad4e4f0$6401a8c0 at BigAl>
Content-Type: text/plain; charset="us-ascii"

For those who like; I'll share some video made by my son (with my 5 yr old
grandson who's nuts about airplanes).  It includes a takeoff, flyby, touch
and go, and landing; lasts about 8 minutes, and is 20MB non-streaming, so
high speed access will certainly be a plus.

 

http://photofu.com/darryl/Velocity_Vignette.wmv

 

Enjoy;

 

Al

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Message: 3
Date: Fri, 25 Jan 2008 21:31:45 -0800
From: "Jack Prock" <jackprock at comcast.net>
Subject: Re: REFLECTOR: pasty hardener
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Message-ID: <03ac01c85fdc$bdb10d00$c801a8c0 at jaxwindows>
Content-Type: text/plain; charset="iso-8859-1"

How much useful life do you need? Are we talking 5 years to 3 years? or 5
years to 1year. 
Is that something you've heard? or is there some documentation that I
missed?
In 2 years, everything is still working well. 

I also only mix up what I need, so it is usually used in 30 minutes or less,
then I
mix more if I need more. The only time I've had a problem with reaction time
being
short was when it was 110 outside and close to that in the garage.
Otherwise, the
working time seems fine.

Seems to work great so far... guess it's just a preference.

Jack
  ----- Original Message ----- 
  From: Al Gietzen 
  To: 'Velocity Aircraft Owners and Builders list' 
  Sent: Friday, January 25, 2008 8:02 PM
  Subject: Re: REFLECTOR: pasty hardener


  Andy wrote:

  I have found that keeping the hardener in the warming cabinet shortens the

  useful life



  That was my experience also.  It darkened more rapidly, I guess due to
oxidation of the amines, or whatever.  The other factor is that the reaction
rate when mixed goes up exponentially with temperature, so it kicks off much
more rapidly at 95 F than at 75F which significantly reduces pot life.  At
95 F, if you don't use what you mixed in about ? hour it begins to thicken
and doesn't wet out as well; whereas at 75F you might have 3 times as long.
Yes, at 75 you will get some crystallization after some months if you are
not using it; but a short term warmup to 110 or so and stirring gets it back
in shape.  Each time I added resin or hardener to the pump, I heated it
prior to pouring it in.  Kept things working well - never had to empty and
clean the pump.



  I did on occasion put mixed epoxy in the freezer, and could warm it up and
use it a day or two later.  Also works for epoxy primers and acrylic paints.



  FWIW,



  Al





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Message: 4
Date: Sat, 26 Jan 2008 05:41:30 -0500
From: Tom <tomcat05 at comcast.net>
Subject: REFLECTOR: Lower cowling- exhaust holes
To: reflector at tvbf.org
Message-ID: <479B0E5A.3040707 at comcast.net>
Content-Type: text/plain; charset=us-ascii; format=flowed

The exit holes in the lower cowling for the dual exhaust are slightly 
oversize to allow for removal/replacement of cowling. I have SS plates 
which screw on over the holes. I had a friend recommend that I attach 
red baffling material to the cover plates to make for a tight fit while 
allowing room for engine movement via the rubber. Has anyone done 
anything like this?? My concern is that the baffling material is only 
listed to tolerate 425 degrees. I have ceramic coating on the exhausts 
but I'd still bet they are hotter than that when the engine is running. Tom


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Message: 5
Date: Sat, 26 Jan 2008 08:25:21 -0500
From: "Terry Miles" <terrence_miles at hotmail.com>
Subject: REFLECTOR: On focus
To: "'Velocity Aircraft Owners and Builders list'"
	<reflector at tvbf.org>
Message-ID: <BAY141-DAV1375D7233FA2032E3A97F0F23A0 at phx.gbl>
Content-Type: text/plain; charset="us-ascii"

Dear All,

 

I have some disappointing news to pass along.  After a good ride around the
local area yesterday, I made a nice VFR approach, everything looked fine
until the rollout.or should I say the slide out.

 

When I first entered pilot school back I the 60's they cautioned us over and
over to think of it that ALL PILOTS fall into two groups regards ever
forgetting the gear.  The groups are:    "Them what have" and  "Them what
will."  

 

With no small amount of chagrin and disbelief I have now moved from the
latter to the former.  I just forgot.  Simple and at the same time as
unbelieveable as that is, it is what happened.  Yes I have the piezo (sp?)
horn hooked up to the idle stop on the throttle.  

 

The prop was an ACI and it shreaded.  I was at idle so I am hoping the
engine crank survived the sudden stop.  Inspections will tell on that.
Lycoming IO-540 300 hp.   Damage to the hull is limited to the belly.  At
the worst I am into the foam core on the belly.   The wings are fine.  The
lower winglets are damaged; one a little more worse than the other.  

 

She is back in the hangar.  For the archives, the fire department came out
with inflatable/deflatable air bags about 2 feet on a side.  Using these
bags and 4x4 posts and plywood and wedges and after two iterations of this,
we were able to raise the aft end enough to come around and with 3 guys
raised the nose by hand sufficiently to get the nose gear locked down.  Then
with a forklife lifting at the prop hub, we lifted the last foot or so
needed in the rear to get the mains overcenter.    

 

I am fine.  Heartsick, but fine.  

 

Terry

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