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Technical
Counselor Reports - 2003
by Gary Collins and Howard Wells, Chapter Technical
Counselors
| Reports of Project
Field Inspections by EAA Chapter 174's Technical Advisors |
| November, 2003 |
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Mark
Neubauer, GlaStar. Inspection on November 6,
2003. The airframe is complete. Mark will use the
Superior XP-360 engine with dual Lightspeed Engineering ignition, a
standard carburetor and a fixed pitch metal prop. Mark will go
to the Superior plant and observe the engine being assembled.
The electronic ignition will be installed by Superior and the engine
will go through a break-in test run in their facility and should be
delivered by the end of November. We reviewed the instrument
panel installation in some detail. The panel was developed
using the panel development tool available at
http://panelbuilder.com.
The airplane will be all electric and no vacuum system will be
installed. It will be set up for IFR operations. We
reviewed: (1) the intelligent switching system that controls the
pumps that transfer fuel from the aux tanks to the main tanks, ( 2)
the angle of attack system, (3) the antenna mounting, and (4) the
battery mounting structure (ask Mark where he is getting his
battery). Mark has utilized the Aero Electric Connection as
the main source for his electrical system design and has developed
very detailed wiring diagrams. Very nice. We discussed
getting the plane out of the basement workshop and prop selection.
Mark is looking for guidance on how to assemble the dyna-focal shock
mounts. I recall the process was covered in a Vans newsletter
awhile back but so far have not found it. Mark is doing a
thoughtful and high quality job of construction and is planning for
future maintenance access.
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| October, 2003 |
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Keane
Shockley, Vans RV-7A. Inspection on October 15,
2003. Keane started work on this kit on September 1, 2003.
In less than 60 hours he had the empennage completed and requested
the inspection to have his riveting technique checked. Since
Keane has taken a SportAir RV builders class, he had a head start
and is doing a good job. You will be able to follow the
progress of this project in detail since Keane is going to use his
web site as his builders log. Go to
www.shockleys.net.
There are lots of photos and details of the building process and the
supplies, like the self-etching primer, he is using on the non-alclad
parts.
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Jerry Hellmann,
Fisher Youngster V. Inspection on October 1, 2003.
This is one of the last kits shipped from the Fisher plant in
Portsmouth, Ohio. The plane is the same one featured on a TV
program about building a plane in 30 days. It is a single
seat, all wood, fabric covered, V W powered biplane. Really
cute. The wings have geodetic internal structure that take the
drag-antidrag loads and also provide torsional strength. The
upper wings, which have no ailerons, weigh about 11 pounds each
(without cover). They are amazingly light and strong
structures. The engine was temporarily mounted to work out
control arrangements. Jerry is considering changing the rather
primitive wheels/brakes provided with the kit to Azuza aluminum
wheels and brakes from the Go Cart world. That is the
wheel/brake system used by Monnett on the Sonex. All the wings
and control surfaces are ready for cover. Jerry has worked out
many unique techniques to bend wood – to make tip bows for instance.
The airframe is built with T-88 which seems to be an excellent glue
for the homebuilder. |
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| September, 2003 |
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Roger
Morello, Kitfox Sport.
Inspection on Sept. 9, 2003. The
airframe is essentially complete and was assembled to install
control cables and fuel lines and electrical wiring to the wings.
Roger’s goal is to build it as light as possible and to that end has
deleted wing tips and was discussing the need for the kit supplied
header tank. He would prefer a Cessna type system with right, left,
both and off and elimination of the header tank. We looked at rudder
pedal/brake assembly and possible control tube interference in the
rear fuselage. Roger is giving thought to access during future
inspections and doing very good work.
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| June, 2003 |
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Scott Hersha, Vans
RV-6. Inspection on June 11, 2003. Most
time was spent on inspection of the engine/prop installation.
The engine has one magneto and one electronic ignition system.
The timing of the magneto was checked and the process of confirming
the electronic system is properly set up was reviewed. This
airplane has no vacuum system - all instrumentation is electric.
To document the electronics, Scott has detailed wiring diagrams of
each separate system, something that will be very valuable for
future trouble shooting. The plane is set up for IFR flying
and has Navaid Devices autopilot. The 0-360 Lycoming is the
engine that was originally in Carl Pieper’s VariViggen. Scott
disassembled it, caught up on some service bulletins and AD notes
and put it back together with new bearings and piston rings.
The engine has less than 120 hours since new. The plane was
weighed and it is very light for an RV-6 with the 0-360 and constant
speed prop. Unpainted, it weighs 1040 pounds. The light
weight was achieved in part, by use of a Dynon electronic flight
display in place of gyroscopic flight instruments and a graphite
three blade prop. Most of the antennas are in the fiberglass
wing tips so there are only two external antennas, the transponder
and one com antenna. Being so clean externally and so light,
I expect the plane will be a great performer. Scott, at the
request of the FAA inspector developed equipment lists and a
condition inspection checklist. In many ways this is the most
sophisticated homebuilt airplane produced by a member of our
chapter. We had quite a discussion about how limits are
depicted using electronic displays. Example - how do you
depict rpm limits, oil temperature limits, airspeed limits if there
is no instrument to put lines on? The final inspection by the
FAA was scheduled for July 3 so the plane may be flying very soon. |
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| April, 2003 |
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Howard Plevyak Jr.,
Glastar. Inspection on April 23, 2003.
The wings, ailerons, flaps and rudder had been previously inspected.
Howard had bought the quick build fuselage from New Glastar which
comes with the fiberglass shells installed and mated over the steel
tube cage. We went over the fuselage in detail, looking at
bulkhead installation in the tail cone and control cable alignment.
All of our Glastar builder have had some issues with rudder
pedal/brake installation and Howard did too. The issue is that
the toe brake cylinders are attached to the fiberglass shell
according to the plans. All our Glastar builder worry about
the integrity of the fiberglass over time since a lot of force can
be applied through the feet to the brakes and all solved the problem
slightly differently but made the plane better by their thoughtful
modifications. It appeared that at the travel extremes, the
elevator cable was getting misaligned. But the horizontal
stabilizer and elevator were not installed and when they are hooked
up we think movement will be limited and the misalignment will not
be a problem. Howard was concerned about control cable
fabrication, not wanting to invest in a tool to make 8 or 10 crimps.
Several members have such tools and builders should contact a tech
counselor before buying special tools for a small number of uses.
Howard is beginning to think about engines with the Lycoming 0-360
or the Superior version of that engine, the XP-360, the most likely
candidate. The other option is a firewall forward package
based on a Subaru auto engine. |
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Gary Collins, Howard Wells and Howard
Plevyak's Glastar
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| March, 2003 |
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Tom Scherder, RV-8.
Inspection on March 20, 2003. Tom is building from
a Quickbuild Kit and is quite far along. All components of the
plane are done. The sliding canopy is fitted and the I0-360
engine and constant speed prop are installed. The ostrich
leather interior is complete. He was just completing the
engine baffle system. The engine has a smoke system and is set
up for inverted flight. Tom has designed and built the
instrument panel which is complete except for the last expensive
instrument – the electrical attitude gyro. He is deep into the
wiring of everything. The panel is painted and Tom plans to do
his own paint job which will be complete with nose art. Wing
tip strobes are installed as are landing lights. |
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Tom Scherder and RV-8 components
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Curtis Hoffman, RV-9.
Inspection on March 26, 2003. This was our initial
inspection of this project. The new Vans kits are amazing -
the parts will assemble with clecos right out of the box.
Curtis has completed the wings, ailerons and flaps and was just
beginning work on the tail parts. We looked at electrical wire
routing near the aileron hinge and discussed options. This
plane is being built to last - all parts are alodined and then
primed with epoxy primer. It appeared to us that the specified
rivet was slightly short on some of the wing skins and we discussed
how to determine proper length. You have to use not what the
plans call for but what is correct, so some judgement is required.
There is some variation in metal thickness. So if the ribs
were made out of thick material and the skins were of thick material
it is possible that the specified rivet might be a bit short. |
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Curtis Hoffman's RV-9 wing
components |
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| February, 2003 |
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Mark Neubauer,
Glastar. Inspection on Feb 22, 2003. Mark is
making good progress. The wing structure is complete.
The top skin is not installed pending installation of fuel tanks and
auto pilot servos. Control cable fabrication, routing and
retention over pulleys was inspected. Routing of brake lines
and parking brake modification reviewed. Mark has made a few
minor modifications to the standard design and he asked us to review
them to make sure he was not creating a problem. He added
quick drains to the fuel system at the lowest point in the system
and valves that permit selecting the right tank, left tank or both
tanks. These changes looked good. We discussed engine
options, final painting, instrument panel options, auto pilot and
aux fuel tank installation. Mark is doing excellent and
thoughtful work with good planning for future access. |
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Mark Neubauer's Glastar |
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| January, 2003 |
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Neil Hulin, Zenith
Zodiac 601XL. Inspection on January 21, 2003.
Neil has completed the horizontal stabilizer, flaps, rudder and
ailerons. The metal work looks good. The wings
were underway and we discussed plumbing the four fuel tanks that
Neil will install. This is not a standard installation.
Neil wants enough fuel to fly out into the outback of Australia
(home) and get back to where fuel is available. All the welded
tanks provided by Zenith were well made. We discussed
corrosion protection of the 6061 aluminum alloy used by Zenith.
Neil is evaluating the possibility of using a Corvair auto engine in
the plane. They are getting hard to find and only certain
models are suitable but the final cost would be much below the cost
of a Rotax 912 or a Jabiru 3300 which most builders use.
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Richard St. Onge Jr., Vans
RV-7. Inspection on January 21, 2003.
Inspected wing structure and fuel tanks prior to closing.
Reviewed tail structure which had previously been inspected.
After spin testing, Vans is recommending the RV-7 use the larger
rudder of the RV-9. The parts for the new rudder were supplied
at no charge. We discussed riveting issues and potential
engines. A Lycoming or the new Superior engine built using
certified parts is most likely. The quality of the Vans kits
is always impressive and just gets better. Now all the flat
skins are covered in blue plastic film to help control scratching
the surface during construction. |
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