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CONTROL LINE SCALE - 2004/12

Author: Bill Boss


Edition: Model Aviation - 2004/12
Page Numbers: 143,144,145

CONTROL LINE SCALE
Bill Boss, 77-06 269th St., New Hyde Park NY 11040
THE AERONCA Champ 85 shown this
month is the work of Frank Slavin of
Philadelphia, Pennsylvania. He is making
an attempt at CL flying after an absence
of more than 50 years. He noted that he
last competed in CL Speed in 1948. It
appears that it’s never too late to enjoy the
sport of model flying. Welcome back,
Frank!
His model is a Profile derived from a
Guillow’s kit and is powered with a GWS
400A electric motor turning an EP5043
propeller. The motor-and-propeller
combination is powered by seven 350
mAh Ni-Cds, resulting in approximately
10 ounces of thrust.
Construction is of balsa with a built-up
wing that is covered with 1⁄32 sheet top
and bottom. The front fuselage section is
made from 1⁄4 sheet balsa stiffened with
1⁄64 plywood to accommodate the motor
mounting. The rear fuselage was
constructed from 1⁄4 square members, with
the top member laminated to obtain the
curvature.
Frank covered the entire model with
colored Japanese tissue and finished it
with two coats of clear Krylon 1301. He
adhered the tissue with a glue stick
applied to the wing edges.
The completed model weighs 10.5
ounces and has a wing loading of 17.8
ounces per square foot. The batteries,
which weigh 3.5 ounces (heavier than the
motor), are rubber-banded to the outside
of the fuselage. Frank thought that by
doing this he would be balancing the
airplane about the longitudinal axis. He
added roughly 2 grams of outboard
wingtip weight.
The wing spans 25 inches, and the
wing area is 88 square inches. There is 0°
of dihedral. The stabilizer area is 14
square inches, and the rudder area is 8.9
square inches. The maximum chord is
3.56 inches, and the aspect ratio is 6.5:1.
The CG is at 35% chord. The motor is set
at approximately 2° right thrust and 0°
downthrust. The wing incidence is
roughly 2.5°.
Frank wrote that the Aeronca had been
flown on 40-foot steel and 28-foot Dacron
lines, and that it flew well except that the
lines tended to slacken when he attempted
a loop. He was going to look at increasing
the motor right thrust as a possible
solution.
He charges the batteries at home with a
RadioShack AC/DC converter or at the
Frank Slavin built his electric-powered Aeronca Champ 85 from a Guillow’s kit. These
types of CL models can be great for the gym or back yard. Frank Slavin photo.
Bill Reynolds submitted this CL Fun Scale Worksheet (Part 1) as the official staticjudging
scoresheet for the new event.
December 2004 143
12sig5.QXD 10/22/04 1:35 pm Page 143
field from the car cigarette lighter through
an ammeter. A full charge of the batteries
provides roughly three minutes of flight
time.
I thank Frank for sharing his
experience with an electric-powered
Profile Scale model, and I encourage
144 MODEL AVIATION
WWW.PSPEC.COM
Complete engine and muffler packages are available.
VISIT US AT WWW.PSPEC.COM.
DEALER INQUIRIES WELCOME!
TWISTER 4-STROKE MUFFLERS & ELBOWS
PISTON/CYLINDER ASSEMBLIES
ULTRATHRUST MUFFLERS
PERFORMANCE SPECIALTIES
PO Box 3146 • Gardnerville, NV 89410
Phone: 775-265-7523 • Fax: 775-265-7522
anyone else who is doing the same thing to
let us know about your projects.
This kind of model flying is well suited
to large school gyms and playgrounds, and
it would certainly go a long way toward a
solution for the noise problem. It might
also be great for some of you who live in
country-style settings and have big enough
back yards. The quietness of this type of
model wouldn’t bother your next-door
neighbors.
Scale rules changes are a subject for
consideration again. During the justcompleted
rules-change cycle, there were
several amendments that will have an
impact on CL Scale in one way or another.
Rules proposal CLG-05-1CP1 has
passed and will be published in the new
Competition Regulations. It is meant to
clarify and limit the allowable methods by
which we control CL models.
Under the “Control Line General” rules
in the 2002-2004 Competition Regulations,
section 2 states that the model’s elevation
control must be accomplished through
manipulation of the control surfaces, and
that the manipulation can be accomplished
by mechanical means or by electrical
impulses transmitted through the lines. It
does not address what other operational
features of a model, such as we have in
Scale models, are permissible.
For years, Scale modelers have used
two- or three-line systems, electronics, or a
combination of both to operate many of the
Scale models’ operational features, even
though the rule specified control-surface
manipulation only. And recently the
question of using radio transmission for
controlling CL models’ operational
features had surfaced and was being
experimented with.
Proposal CLG-05-1CP1 changes the
last line of “Control Line General” section
2 to read, “Such manipulation of control
surfaces, and any other of the model’s
operational features, may be accomplished
by mechanical means, electrical impulses
transmitted through the line(s), or by any
other system that does not interfere with
the control of any other model or present a
safety hazard to competitors or spectators.
The use of radio control to accomplish any
control function on a control line model is
specifically prohibited.”
This change not only clarifies the old
rule, but it leaves the door open for the
possible development and use of new
systems that would not have an impact on
the safety of other events or forms of
modeling. The restriction on the use of
radio control in CL models also adds a
measure of safety and does away with the
possibility of CL interfering with RC
activities.
The passage of SCA-05-2 creates the
CL Fun Scale event, which is an effort to
promote/increase CL Scale participation.
Bill Reynolds of Caldwell, New Jersey,
proposed the event. He noted that many
modelers express the desire to compete in
some sort of Scale class but do not think
their building skills can compete with the
more experienced Scale modelers.
Bill thinks the introduction of scale
The
“Cleviswedger”
is a device that
makes installing metal
clevises easier. You simply
insert the screwdrivershaped
lower jaw into the
clevis at the midpoint,
twist 90 degrees, push in
an additional 1⁄8 inch and
squeeze the handles together to engage the
positive locking device. The clevis pin is exposed
ready to receive the control horn.
The “Cleviswedger” can also be used as a mini
clamp during glue-up procedures, for pinching off
fuel ines, etc.
Go to www.cleviswedger.com for complete details!
Order direct from: Titan Industries
8143 E. Paul, Clovis CA 93619
tel: 559-325-1891 – fax: 559-325-9822
email: [email protected]
What in the heck is a
CLEVISWEDGER?
$9.95
plus $3.00 s&h
Patent Pending.
12sig5.QXD 10/22/04 1:35 pm Page 144
December 2004 145
ARFs and RTFs in the past several years
might provide a solution for the modeler
he described. The thrust of this new event
is to put the emphasis on flying—not on
the building aspects of the model.
Fun Scale is open to modeler-built or
factory-built scale models. The rules are
the same as for Sport Scale (event 509)
except for the static judging. The static
scale outline score is zero to five points for
proving that the model is of a full-scale
aircraft that does or did exist. An
additional zero to five points may be
awarded for proof of the color-andmarkings.
The official score for the event will be
the static judging (maximum of 10 points)
added to the flight score (maximum of 100
points), for a possible total of 110 points. I
have included a copy of the CL Fun Scale
scoresheet Part 1 (for static judging) in this
month’s column. The flight scoresheet—
Part 2—is on page 161 of the 2002-2004
Competition Regulations.
On the subject of the Scale-event
scoresheets, proposal SCA-05-12—which
was to provide a common worksheet for
static-judging the CL and RC Sport Scale
events—failed in the final voting.
The pull-test table for CL Scale models,
which is on page 157 of the 2002-2004
Competition Regulations, changes with the
passage of proposal SCA-05-1. The last
line in the table—for models in the 15- to
20-pound category—has been changed
from 5G 80-pound maximum to 5G 80-
pound minimum.
The passage of proposal SCA-05-5
exempts CL Profile Scale models from
having to include retractable landing gear
when the prototype had retractable landing
gear. This requirement is stated on page
163 of the 2002-2004 Competition
Regulations, in paragraph 4.2, item e, of
the “Control Line Scale Flight Judging
Guide.”
Be aware that the rules-change cycle
has been brought back to two years.
Although it is compressed, the crossproposal
phase has been retained. If you
want to submit rules-change proposals, get
them in early.
Technical Director Steve Kaluf has said
that although a printed version of the
Competition Regulations will still be
available, a decision has been made to
make an Internet version available on
AMA’s Web site (www.modelaircraft.
org). It will be the most up-to-date version
because it will include emergency/safety
or interpretation changes that might go
into effect during the rules-change cycle.
Look to the Web version for the final/full
wording of all passed proposals.
Please send ideas, notice of upcoming CL
Scale events, contest reports, and
especially photos of CL Scale activity to
me at the address at the top of this column.
MA
12sig5.QXD 10/22/04 1:35 pm Page 145

Author: Bill Boss


Edition: Model Aviation - 2004/12
Page Numbers: 143,144,145

CONTROL LINE SCALE
Bill Boss, 77-06 269th St., New Hyde Park NY 11040
THE AERONCA Champ 85 shown this
month is the work of Frank Slavin of
Philadelphia, Pennsylvania. He is making
an attempt at CL flying after an absence
of more than 50 years. He noted that he
last competed in CL Speed in 1948. It
appears that it’s never too late to enjoy the
sport of model flying. Welcome back,
Frank!
His model is a Profile derived from a
Guillow’s kit and is powered with a GWS
400A electric motor turning an EP5043
propeller. The motor-and-propeller
combination is powered by seven 350
mAh Ni-Cds, resulting in approximately
10 ounces of thrust.
Construction is of balsa with a built-up
wing that is covered with 1⁄32 sheet top
and bottom. The front fuselage section is
made from 1⁄4 sheet balsa stiffened with
1⁄64 plywood to accommodate the motor
mounting. The rear fuselage was
constructed from 1⁄4 square members, with
the top member laminated to obtain the
curvature.
Frank covered the entire model with
colored Japanese tissue and finished it
with two coats of clear Krylon 1301. He
adhered the tissue with a glue stick
applied to the wing edges.
The completed model weighs 10.5
ounces and has a wing loading of 17.8
ounces per square foot. The batteries,
which weigh 3.5 ounces (heavier than the
motor), are rubber-banded to the outside
of the fuselage. Frank thought that by
doing this he would be balancing the
airplane about the longitudinal axis. He
added roughly 2 grams of outboard
wingtip weight.
The wing spans 25 inches, and the
wing area is 88 square inches. There is 0°
of dihedral. The stabilizer area is 14
square inches, and the rudder area is 8.9
square inches. The maximum chord is
3.56 inches, and the aspect ratio is 6.5:1.
The CG is at 35% chord. The motor is set
at approximately 2° right thrust and 0°
downthrust. The wing incidence is
roughly 2.5°.
Frank wrote that the Aeronca had been
flown on 40-foot steel and 28-foot Dacron
lines, and that it flew well except that the
lines tended to slacken when he attempted
a loop. He was going to look at increasing
the motor right thrust as a possible
solution.
He charges the batteries at home with a
RadioShack AC/DC converter or at the
Frank Slavin built his electric-powered Aeronca Champ 85 from a Guillow’s kit. These
types of CL models can be great for the gym or back yard. Frank Slavin photo.
Bill Reynolds submitted this CL Fun Scale Worksheet (Part 1) as the official staticjudging
scoresheet for the new event.
December 2004 143
12sig5.QXD 10/22/04 1:35 pm Page 143
field from the car cigarette lighter through
an ammeter. A full charge of the batteries
provides roughly three minutes of flight
time.
I thank Frank for sharing his
experience with an electric-powered
Profile Scale model, and I encourage
144 MODEL AVIATION
WWW.PSPEC.COM
Complete engine and muffler packages are available.
VISIT US AT WWW.PSPEC.COM.
DEALER INQUIRIES WELCOME!
TWISTER 4-STROKE MUFFLERS & ELBOWS
PISTON/CYLINDER ASSEMBLIES
ULTRATHRUST MUFFLERS
PERFORMANCE SPECIALTIES
PO Box 3146 • Gardnerville, NV 89410
Phone: 775-265-7523 • Fax: 775-265-7522
anyone else who is doing the same thing to
let us know about your projects.
This kind of model flying is well suited
to large school gyms and playgrounds, and
it would certainly go a long way toward a
solution for the noise problem. It might
also be great for some of you who live in
country-style settings and have big enough
back yards. The quietness of this type of
model wouldn’t bother your next-door
neighbors.
Scale rules changes are a subject for
consideration again. During the justcompleted
rules-change cycle, there were
several amendments that will have an
impact on CL Scale in one way or another.
Rules proposal CLG-05-1CP1 has
passed and will be published in the new
Competition Regulations. It is meant to
clarify and limit the allowable methods by
which we control CL models.
Under the “Control Line General” rules
in the 2002-2004 Competition Regulations,
section 2 states that the model’s elevation
control must be accomplished through
manipulation of the control surfaces, and
that the manipulation can be accomplished
by mechanical means or by electrical
impulses transmitted through the lines. It
does not address what other operational
features of a model, such as we have in
Scale models, are permissible.
For years, Scale modelers have used
two- or three-line systems, electronics, or a
combination of both to operate many of the
Scale models’ operational features, even
though the rule specified control-surface
manipulation only. And recently the
question of using radio transmission for
controlling CL models’ operational
features had surfaced and was being
experimented with.
Proposal CLG-05-1CP1 changes the
last line of “Control Line General” section
2 to read, “Such manipulation of control
surfaces, and any other of the model’s
operational features, may be accomplished
by mechanical means, electrical impulses
transmitted through the line(s), or by any
other system that does not interfere with
the control of any other model or present a
safety hazard to competitors or spectators.
The use of radio control to accomplish any
control function on a control line model is
specifically prohibited.”
This change not only clarifies the old
rule, but it leaves the door open for the
possible development and use of new
systems that would not have an impact on
the safety of other events or forms of
modeling. The restriction on the use of
radio control in CL models also adds a
measure of safety and does away with the
possibility of CL interfering with RC
activities.
The passage of SCA-05-2 creates the
CL Fun Scale event, which is an effort to
promote/increase CL Scale participation.
Bill Reynolds of Caldwell, New Jersey,
proposed the event. He noted that many
modelers express the desire to compete in
some sort of Scale class but do not think
their building skills can compete with the
more experienced Scale modelers.
Bill thinks the introduction of scale
The
“Cleviswedger”
is a device that
makes installing metal
clevises easier. You simply
insert the screwdrivershaped
lower jaw into the
clevis at the midpoint,
twist 90 degrees, push in
an additional 1⁄8 inch and
squeeze the handles together to engage the
positive locking device. The clevis pin is exposed
ready to receive the control horn.
The “Cleviswedger” can also be used as a mini
clamp during glue-up procedures, for pinching off
fuel ines, etc.
Go to www.cleviswedger.com for complete details!
Order direct from: Titan Industries
8143 E. Paul, Clovis CA 93619
tel: 559-325-1891 – fax: 559-325-9822
email: [email protected]
What in the heck is a
CLEVISWEDGER?
$9.95
plus $3.00 s&h
Patent Pending.
12sig5.QXD 10/22/04 1:35 pm Page 144
December 2004 145
ARFs and RTFs in the past several years
might provide a solution for the modeler
he described. The thrust of this new event
is to put the emphasis on flying—not on
the building aspects of the model.
Fun Scale is open to modeler-built or
factory-built scale models. The rules are
the same as for Sport Scale (event 509)
except for the static judging. The static
scale outline score is zero to five points for
proving that the model is of a full-scale
aircraft that does or did exist. An
additional zero to five points may be
awarded for proof of the color-andmarkings.
The official score for the event will be
the static judging (maximum of 10 points)
added to the flight score (maximum of 100
points), for a possible total of 110 points. I
have included a copy of the CL Fun Scale
scoresheet Part 1 (for static judging) in this
month’s column. The flight scoresheet—
Part 2—is on page 161 of the 2002-2004
Competition Regulations.
On the subject of the Scale-event
scoresheets, proposal SCA-05-12—which
was to provide a common worksheet for
static-judging the CL and RC Sport Scale
events—failed in the final voting.
The pull-test table for CL Scale models,
which is on page 157 of the 2002-2004
Competition Regulations, changes with the
passage of proposal SCA-05-1. The last
line in the table—for models in the 15- to
20-pound category—has been changed
from 5G 80-pound maximum to 5G 80-
pound minimum.
The passage of proposal SCA-05-5
exempts CL Profile Scale models from
having to include retractable landing gear
when the prototype had retractable landing
gear. This requirement is stated on page
163 of the 2002-2004 Competition
Regulations, in paragraph 4.2, item e, of
the “Control Line Scale Flight Judging
Guide.”
Be aware that the rules-change cycle
has been brought back to two years.
Although it is compressed, the crossproposal
phase has been retained. If you
want to submit rules-change proposals, get
them in early.
Technical Director Steve Kaluf has said
that although a printed version of the
Competition Regulations will still be
available, a decision has been made to
make an Internet version available on
AMA’s Web site (www.modelaircraft.
org). It will be the most up-to-date version
because it will include emergency/safety
or interpretation changes that might go
into effect during the rules-change cycle.
Look to the Web version for the final/full
wording of all passed proposals.
Please send ideas, notice of upcoming CL
Scale events, contest reports, and
especially photos of CL Scale activity to
me at the address at the top of this column.
MA
12sig5.QXD 10/22/04 1:35 pm Page 145

Author: Bill Boss


Edition: Model Aviation - 2004/12
Page Numbers: 143,144,145

CONTROL LINE SCALE
Bill Boss, 77-06 269th St., New Hyde Park NY 11040
THE AERONCA Champ 85 shown this
month is the work of Frank Slavin of
Philadelphia, Pennsylvania. He is making
an attempt at CL flying after an absence
of more than 50 years. He noted that he
last competed in CL Speed in 1948. It
appears that it’s never too late to enjoy the
sport of model flying. Welcome back,
Frank!
His model is a Profile derived from a
Guillow’s kit and is powered with a GWS
400A electric motor turning an EP5043
propeller. The motor-and-propeller
combination is powered by seven 350
mAh Ni-Cds, resulting in approximately
10 ounces of thrust.
Construction is of balsa with a built-up
wing that is covered with 1⁄32 sheet top
and bottom. The front fuselage section is
made from 1⁄4 sheet balsa stiffened with
1⁄64 plywood to accommodate the motor
mounting. The rear fuselage was
constructed from 1⁄4 square members, with
the top member laminated to obtain the
curvature.
Frank covered the entire model with
colored Japanese tissue and finished it
with two coats of clear Krylon 1301. He
adhered the tissue with a glue stick
applied to the wing edges.
The completed model weighs 10.5
ounces and has a wing loading of 17.8
ounces per square foot. The batteries,
which weigh 3.5 ounces (heavier than the
motor), are rubber-banded to the outside
of the fuselage. Frank thought that by
doing this he would be balancing the
airplane about the longitudinal axis. He
added roughly 2 grams of outboard
wingtip weight.
The wing spans 25 inches, and the
wing area is 88 square inches. There is 0°
of dihedral. The stabilizer area is 14
square inches, and the rudder area is 8.9
square inches. The maximum chord is
3.56 inches, and the aspect ratio is 6.5:1.
The CG is at 35% chord. The motor is set
at approximately 2° right thrust and 0°
downthrust. The wing incidence is
roughly 2.5°.
Frank wrote that the Aeronca had been
flown on 40-foot steel and 28-foot Dacron
lines, and that it flew well except that the
lines tended to slacken when he attempted
a loop. He was going to look at increasing
the motor right thrust as a possible
solution.
He charges the batteries at home with a
RadioShack AC/DC converter or at the
Frank Slavin built his electric-powered Aeronca Champ 85 from a Guillow’s kit. These
types of CL models can be great for the gym or back yard. Frank Slavin photo.
Bill Reynolds submitted this CL Fun Scale Worksheet (Part 1) as the official staticjudging
scoresheet for the new event.
December 2004 143
12sig5.QXD 10/22/04 1:35 pm Page 143
field from the car cigarette lighter through
an ammeter. A full charge of the batteries
provides roughly three minutes of flight
time.
I thank Frank for sharing his
experience with an electric-powered
Profile Scale model, and I encourage
144 MODEL AVIATION
WWW.PSPEC.COM
Complete engine and muffler packages are available.
VISIT US AT WWW.PSPEC.COM.
DEALER INQUIRIES WELCOME!
TWISTER 4-STROKE MUFFLERS & ELBOWS
PISTON/CYLINDER ASSEMBLIES
ULTRATHRUST MUFFLERS
PERFORMANCE SPECIALTIES
PO Box 3146 • Gardnerville, NV 89410
Phone: 775-265-7523 • Fax: 775-265-7522
anyone else who is doing the same thing to
let us know about your projects.
This kind of model flying is well suited
to large school gyms and playgrounds, and
it would certainly go a long way toward a
solution for the noise problem. It might
also be great for some of you who live in
country-style settings and have big enough
back yards. The quietness of this type of
model wouldn’t bother your next-door
neighbors.
Scale rules changes are a subject for
consideration again. During the justcompleted
rules-change cycle, there were
several amendments that will have an
impact on CL Scale in one way or another.
Rules proposal CLG-05-1CP1 has
passed and will be published in the new
Competition Regulations. It is meant to
clarify and limit the allowable methods by
which we control CL models.
Under the “Control Line General” rules
in the 2002-2004 Competition Regulations,
section 2 states that the model’s elevation
control must be accomplished through
manipulation of the control surfaces, and
that the manipulation can be accomplished
by mechanical means or by electrical
impulses transmitted through the lines. It
does not address what other operational
features of a model, such as we have in
Scale models, are permissible.
For years, Scale modelers have used
two- or three-line systems, electronics, or a
combination of both to operate many of the
Scale models’ operational features, even
though the rule specified control-surface
manipulation only. And recently the
question of using radio transmission for
controlling CL models’ operational
features had surfaced and was being
experimented with.
Proposal CLG-05-1CP1 changes the
last line of “Control Line General” section
2 to read, “Such manipulation of control
surfaces, and any other of the model’s
operational features, may be accomplished
by mechanical means, electrical impulses
transmitted through the line(s), or by any
other system that does not interfere with
the control of any other model or present a
safety hazard to competitors or spectators.
The use of radio control to accomplish any
control function on a control line model is
specifically prohibited.”
This change not only clarifies the old
rule, but it leaves the door open for the
possible development and use of new
systems that would not have an impact on
the safety of other events or forms of
modeling. The restriction on the use of
radio control in CL models also adds a
measure of safety and does away with the
possibility of CL interfering with RC
activities.
The passage of SCA-05-2 creates the
CL Fun Scale event, which is an effort to
promote/increase CL Scale participation.
Bill Reynolds of Caldwell, New Jersey,
proposed the event. He noted that many
modelers express the desire to compete in
some sort of Scale class but do not think
their building skills can compete with the
more experienced Scale modelers.
Bill thinks the introduction of scale
The
“Cleviswedger”
is a device that
makes installing metal
clevises easier. You simply
insert the screwdrivershaped
lower jaw into the
clevis at the midpoint,
twist 90 degrees, push in
an additional 1⁄8 inch and
squeeze the handles together to engage the
positive locking device. The clevis pin is exposed
ready to receive the control horn.
The “Cleviswedger” can also be used as a mini
clamp during glue-up procedures, for pinching off
fuel ines, etc.
Go to www.cleviswedger.com for complete details!
Order direct from: Titan Industries
8143 E. Paul, Clovis CA 93619
tel: 559-325-1891 – fax: 559-325-9822
email: [email protected]
What in the heck is a
CLEVISWEDGER?
$9.95
plus $3.00 s&h
Patent Pending.
12sig5.QXD 10/22/04 1:35 pm Page 144
December 2004 145
ARFs and RTFs in the past several years
might provide a solution for the modeler
he described. The thrust of this new event
is to put the emphasis on flying—not on
the building aspects of the model.
Fun Scale is open to modeler-built or
factory-built scale models. The rules are
the same as for Sport Scale (event 509)
except for the static judging. The static
scale outline score is zero to five points for
proving that the model is of a full-scale
aircraft that does or did exist. An
additional zero to five points may be
awarded for proof of the color-andmarkings.
The official score for the event will be
the static judging (maximum of 10 points)
added to the flight score (maximum of 100
points), for a possible total of 110 points. I
have included a copy of the CL Fun Scale
scoresheet Part 1 (for static judging) in this
month’s column. The flight scoresheet—
Part 2—is on page 161 of the 2002-2004
Competition Regulations.
On the subject of the Scale-event
scoresheets, proposal SCA-05-12—which
was to provide a common worksheet for
static-judging the CL and RC Sport Scale
events—failed in the final voting.
The pull-test table for CL Scale models,
which is on page 157 of the 2002-2004
Competition Regulations, changes with the
passage of proposal SCA-05-1. The last
line in the table—for models in the 15- to
20-pound category—has been changed
from 5G 80-pound maximum to 5G 80-
pound minimum.
The passage of proposal SCA-05-5
exempts CL Profile Scale models from
having to include retractable landing gear
when the prototype had retractable landing
gear. This requirement is stated on page
163 of the 2002-2004 Competition
Regulations, in paragraph 4.2, item e, of
the “Control Line Scale Flight Judging
Guide.”
Be aware that the rules-change cycle
has been brought back to two years.
Although it is compressed, the crossproposal
phase has been retained. If you
want to submit rules-change proposals, get
them in early.
Technical Director Steve Kaluf has said
that although a printed version of the
Competition Regulations will still be
available, a decision has been made to
make an Internet version available on
AMA’s Web site (www.modelaircraft.
org). It will be the most up-to-date version
because it will include emergency/safety
or interpretation changes that might go
into effect during the rules-change cycle.
Look to the Web version for the final/full
wording of all passed proposals.
Please send ideas, notice of upcoming CL
Scale events, contest reports, and
especially photos of CL Scale activity to
me at the address at the top of this column.
MA
12sig5.QXD 10/22/04 1:35 pm Page 145

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