These
are the steps I took to replace a well used nose on a Varieze. In
the land of Canardians there are two camps, those who say what Burt
designed shall not be modified by mere mortals and those who feel
free to experiment as they deem fit. I fall into the latter group
in this case since the long nose has been done successfully by many
VariEZe and Long-EZ builders.
I give
credit to Eric Cobb with the process you see here. Eric was very
helpful in describing the process he uses. His site
has an excellent article on Nose
Art, a term that he originated as far as I know. Eric also has
several EZ video's on his site that are excellent! How
does Eric keep the floor of his hanger so clean? Does he pick up
before taking pictures?
Before
you take a saw to your nose, understand that some knowledgeable
EZ guys do not approve of the long nose especially on a Varieze.
Either for aerodynamic or aesthetic reason (or both). I researched
the issues and I concluded for my purposes it is safe and I prefer
the look of the long nose over the short.
Several
factors weighed on my decision, including underlying structural
problems that needed to be addressed. Here are the top ten problems
and issues that I had with the existing nose:
- The
NG-30 plates had been hacked up by a previous owner. Extensions
from some unknown type of foam were poorly glassed into place
in an effort to strengthen the NG-30 plates when an electric nose
list was installed.
- I
wanted to replace the existing lift with a lighter electric lift
made by Jack Wilhelmson that does not penetrate F22.
- The
aircraft is fitted with an O-235 and was carrying quite a bit
of ballast in the nose. To eliminate as much of the ballast as
possible and make up for the weight reduction of the nose lift
the battery needed to be moved forward.
- Access
to the nose area was poor and required removing the canard by
reaching in from under the instrument panel. The battery could
only be accessed by removing the Canard.
- The
nose had delaminations around the nose bumper and NG-30.
- Very
limited access to the rear of the instrument panel, also required
removing the canard.
- The
F22 canard alignment pin holes in the canard were elongated and
the guide pin bushings were missing.
- The
canopy was a replacement and was not fitted correctly and required
replacement. I believe the forward deck and nose are easier shaped
as a pair, I also wanted a more rounded forward deck. The instrument
panel was very short because of the flat forward deck.
- The
area of the forward canopy was long per-plans. This has been shortened
by other builders and successfully solves the forward canopy lifting
problems.
- The
"Cool" factor. The long nose just looks cool!
All
these reasons add up to major surgery. So I carefully measured,
placed some masking tape to define the cuts and thirty minutes later
the nose was laying on the floor looking just like the nose of a
decapitated shark. The total project not including the canopy fabrication
required about 37 hours over three weekends.
This
was my third nose job. The first two were on my Long-EZ. The same
procedure I describe here was used for the Long-EZ also. Having
carved three noses I can say, you definitely get better with practice.
I did not like my first nose on the Long-EZ, so much so that I did
not even glass it. I'm not much of an artist or sculptor and it
took careful study of nose's that I liked to imprint that picture
in my mind. When it came time to do nose two and nose three I had
it down. This is nose three and the best yet.
|

The
original nose, functional but not sexy in my opinion. |
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Here
are the extensions that were grafted onto the NG-30 plates. They were
easily (and I mean easily) broken off with just my hand. It was at
this point I decided that the entire nose was coming off to properly
repair this area. I could have fixed it in place but sometimes it
is just quicker to start over. |
Dant
dant... dant dant... anyone see Jaws? This is going on the wall
of my hanger.
I used
an 11 inch Sawsall blade to cut just forward of F22 and around NG-30.
|

|
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What
is left of the "front-end". You can see here where the
F22 bulkhead was cut to install the electric nose lift. The Wilhelson
lift does not require a hole in F22.
Battery
and the 20 pound barbells keeps the nose down while the process
unfolds. |
| Here
is the canard after carefully removing the cover. The forward deck
aft of the canard was also carefully and completely removed(not shown). |

|
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New
NG-30 plates layed up per plans with multi-ply glass hardpoints. |
| |
The
NG-31 bulkhead is enlarged, Here is a cad drawing
that can be used to properly size it. |
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The
NG-30 plates are installed per-plans. I used a temporary NG-31 that
was glassed with one ply only to stiffen it a little. The NG-31
gets cut a little later in the process.
Once
NG-31 is attached to the NG-30 plates you grab some blocks of blue
foam and start cutting.
The
bottom and sides are cut from blue foam and glued in place using
pour foam first. Then add the top pieces. |
| I
used softer urethane foam for nose one. Eric Cobb suggested using
the blue foam and I highly concur. It makes the job much easier. The
urethane foam besides being messier is too soft and cuts too easily.
Either foam is very messy, expect to have the stuff floating around
for days. |

|
 |
Eric
recommended pour in place foam from Hastings Plastics Co. 310-829-3449.
I
agree that the pour foam that Hastings sells is much better than
other types.
The
tool of choice for rough shaping is a butcher knife and hand saw. |
 |
Here
is the new nose at the end of the hacking phase. The wire brush
that is sitting on top is used at this point to further define the
shape you want.
No
templates are needed to shape the nose, just carve away anything
that does not look like the nose. Be careful to watch the symmetry. |
A
hour or so of brushing gets us to this stage. Work from the center
out and top down. Visually check your lines as you go. Take your
time at this point since it is harder to add material. If you do
get a low spot use pour foam to glue a new piece of foam on the
spot.
At
the last stage I switched to 40 grit sandpaper to carefully shape
the nose. |

|
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End
of day 1. The nose/deck looks just like what I wanted. The forward
deck is 1.5 inches higher, and shortens the canopy deck by 3.5 inches. |
|
The
carving is not complete, but you can see how much more panel space
the rounded forward deck provides. |

|
 |
The
nose with carving finished and glassed. I like the rounded look much
more than the flat look of the original. |
You
have to cut into that great looking nose to finish the process.
I placed a mark around the perimeter of the nose where I wanted
to cut and used a jig-saw to cut through the glass. A large butcher
knife finish's the cut.
Cut
the canard cover from the forward deck while you've got the jig
saw going.
Notice
the temporary NG-31 gets cut with the butcher knife... that is why
you only glass it with one ply. |

|
 |
Making
a canoe. Here is how the lower portion looks after using the wire
brushes to carve out the nose. Top and bottom. I used a nail wrapped
with duct tape as a depth gauge. |
 |
The
forward hatch is cut from the top piece. Make sure it is large enough
to remove the battery. The hatch will allow quick access to the battery
and nose lift. |
| I also
placed a removable panel over the IP. Here it the panel just after
cutting with the jig-saw. |

|
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While
I'm here I might as well clean up that ugly looking nose wheel. This
Varieze is a rehab project and as you can tell it needed lots of re-hab. |
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Here
is the nose wheel after getting cleaned up and a new tire. I used
a wire brush on a drill. After it was clean, I carefully checked
for cracks. I also cleaned and repacked the wheel bearings.
Notice
the early style foot. I plan to replace that with the newer version
as some of these early castings caused a split in the nose strut.
The
smooth nose tire will also reduce debris that is kicked up into
the prop.
|
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Here
is the layup for the hatch lip. Tape the hatch panel in place, cover
the edges with duct tape. Spread micro in the gap and then layup three
ply bid underneath. |
| You
pop off the hatch and the lip comes out looking like this. |
 |
 |
A
jig saw and some 40 grit cleans the lip up nicely. Notice the battery
will just slip out of the nose. There is room for other items, like
ballast, if needed.
Once
you are happy with the inside, a new NG-31 is glassed and the two
half's are glassed.
Hinges
and a hatch lock were added to finish it up. |
  |
The
nose, before and after... looking like a mini-Berkut. I plan to
do a new weight and balance once everything is done.
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