86 MODEL AVIATION
each for the elevator, rudder, and throttle. The review model was
flown with a four-cell, 1300 NiMH pack.
Any four-channel radio and a Y lead will allow you to fly this
airplane. However, a computer radio with channel-mixing options
will allow you to dial away any minor rudder-control coupling.
The instructions for the Groovy 50 are a series of photos and
basic directions. The builder is expected to have a certain amount
of RC model-airplane construction knowledge.
The engine took the most time to install. I attached the O.S.
.61 to the engine mount and then offered up the whole assembly
to the firewall and positioned it so the muffler was lined up
directly under the airplane. This hid most of the muffler and
directed the exhaust gases downward and away from the model.
The landing gear was predrilled and was mainly a matter of
assembly rather than construction. The wheel pants were opened
out to give better wheel/tire clearance. Each of the pants was held
in place with 2-56 bolts and blind nuts.
I glued the stabilizer in place with 30-
minute epoxy and lined it up with the
plug-on wings. I fitted the elevators
IN A PREVIOUS
column I wrote
about airplanes you
could use as
precision
Aerobatics
(Pattern) primers or
as good vehicles
with which to learn aerobatics. Now some ARFs are specifically
called “Pattern” airplanes. Their names often include the label
“F3A,” which is synonymous with Pattern.
The US has five RC Aerobatics classes of increasing
difficulty. The top level is AMA class 406, which is also referred
to as FAI F3A Pattern.
The top-of-the-line Pattern airplanes tend to be just inside the
2-meter size limit. They use big glow engines in the 1.40-1.70 cu.
in. range or large motor equivalents turning such propellers as
those measuring 24 inches.
Smaller, more economical Pattern ARFs are available in the
.45-.90 engine range, one of which is The World Models
Manufacturing Co. Ltd. Groovy 50. This airplane will not break
the bank, but it will do almost everything a 2-meter FAI airplane
can do.
The Groovy 50 spans 54.5 inches and has a wing loading of
20.3 ounces per square foot. It is expected to have a final weight
of 5 pounds, 11 ounces. Its primary construction is of balsa and
plywood. It is precovered with a fuelproof iron-on material.
The wing comes in two parts and is held in place with a wing
tube, as are many, if not most, of the current 2-meter Pattern
airplanes’ wings. Not many items were needed to complete the
Groovy 50.
When you look at the building instructions you can see that
this model was designed for the YS .53 engine, which has been
replaced by the more powerful YS .63. An O.S. .61 FX was
available and would more than hold its own against the YS .63.
It proved to be easy to adapt the airplane to accept an O.S. .61.
No special muffler was required. If you use the supplied muffler
with original baffle still inside, the sound is acceptable to Pattern
ears!
The airplane needs five servos: two for the ailerons and one
[[email protected]]
Radio Control Aerobatics Eric Henderson
Also included in this column:
• Congrats to the 2007 US
F3A team
An in-depth look at The World Models Manufacturing Co.’s Groovy 50
The Groovy 50 uses two pushrods to
operate the elevator halves. Shown is
their neat and reliable coupler.
There is a cavity already in the lower half of the nose that accommodates the muffler.
The exhaust goes out between the undercarriage legs.
The O.S. .61 FX is lined up at an angle to hide and position the
muffler directly underneath the Groovy 50’s fuselage.
11sig3.QXD 9/21/07 10:46 AM Page 86
before hinging the rudder to allow for
more accurate throw and neutral
alignment of the halves.
All the control surfaces used Mylar
hinges, and fitting them was a quick job.
The fin was already part of the fuselage,
making alignment basically automatic.
The fin and the stabilizer aligned correctly
with the wings. This was important
because the factory-fit wing tubes dictated
the finished model’s success.
It took less than 30 minutes to
complete the wing. The plug-on
configuration took away all the hard work.
The aileron servos fit in the wing panels
and needed no extension leads to reach the
fuselage.
The receiver and battery were held in place with double-stick
Velcro tape. The rearward placement of the rudder-servo work
proved to be successful because the CG with an O.S. .61 and
standard muffler on the front came out exactly as in the
instructions.
The Groovy 50’s all-up finished weight was 5.0 pounds, 3.2
November 2007 87
Above: The engine tucks in neatly under
the cheek cowl and the needle is in a safe
place to operate.
Left: All the model’s parts are waiting to
be assembled for flight. The JR 10X radio
gives you an idea of the overall size.
Below: Looking right for the Pattern
part, the airplane is ready to fly. It could
easily be kept assembled, depending on
what vehicle you drive.
The rudder servo was moved to the rear of the Groovy 50’s
fuselage to get the best possible CG.
ounces with an O.S. .61 FX engine. This was pleasing, at 8
ounces lighter than was called for on the box!
The decals were difficult to apply until I enlisted the help of some
soapy water! I spray-painted the canopy on the inside because there
was no need to add the weight of a pilot bust. The last thing to do was
iron down all the covering edges and wait for a good flying day.
11sig3.QXD 9/21/07 11:18 AM Page 87
The first thing to do at the field was
take a bunch of pictures. The second thing
was to break in the O.S. .61. It needed
only a half tank of Coolpower 15% to get
it sorted out.
The break-in process was interspersed
with many questions from the onlookers.
My favorite was “Are you going to fly it?”
I always want to say “Not if I can find a
good excuse!” Just joking of course.
This brightly colored airplane could be
readily seen from the far end of the pits. It
did not take long for the peanut gallery to
shuffle upwind!
As a safety precaution I programmed
the JR 10X fail-safe settings to have the
throttle go to idle and a touch of upelevator
before the first flight. It would be
reset after the flight to match any primary
control trims that were needed.
All the range checks were completely
satisfactory. The gallery was getting
restless, so it was time to fly.
The Groovy 50 tracked straight down
the runway and lifted off easily at half
throttle. It needed a tiny bit of right aileron
trim. The initial testing went so well that I
attempted most of the FAI F3A P-07
schedule. The rolling maneuvers were
easy.
The low rate throws chosen from the
manual were just right for smooth Pattern
flying. The airplane was able to do snaps
in the down-line and up-line without using
high-rate switches. Throws used were
18mm up and down for elevator, 45mm
left and right for rudder, and 10mm up and
down for aileron.
I performed Inverted Spins with rudder
and elevator only. The model stopped
rotating as soon as the controls were
centered. It was capable of long and
extremely slow rolls. (Those always seem
to please the spectators.)
In the knife-edge position I could see
that there was a minute roll to the canopy.
Later I dialed in 11% antiroll mix to fix
the issue. It really only happened in long
knife edges, so it might not be a problem
for everyone. Now knife-edge
performance is excellent. The Groovy 50
also did the Avalanche type of snap with
no problems.
Landing was simply a matter of lining
up on the runway, chopping the gas to a
low idle, and letting the airplane land with
a small flare on touchdown.
Although I aimed this review at
evaluating the Groovy 50 as a Pattern
airplane, it is an excellent sport model as
well. It is predictable and flies smoothly in
the wind.
Takeoffs were augmented with the use
of the ailerons as flaperons. This helped
88 MODEL AVIATION
Tru-Turn now offers the popular Ultimate shape in EIGHT
different sizes! This Spinner looks great on your Cessna as well
as CAP, Edge, Extra, Giles, and many other aerobatic and sport
designs.
You'll find this Spinner available in "120-Slot" for the prop range
used on 4-stroke .91-1.50 motors and "Menz Cut" for use with
most european style props up to 22". Special Slotting is
available upon request too! Use our "Adapter Finder" online to
find an Adapter Kit and learn of any possible Spinner Backplate
modifications you may need at our website today!
See your Hobby dealer or call Tru-Turn direct:
(281) 479-9600 www.tru-turn.com
Made in the U.S.A.
by Romco Manufacturing, Inc.
100 West First Street, Deer Park, Texas 77536
Made in the U.S.A.
the airplane leave the long grass that is
found just before the mower visits the
runway!
Slight up aileron on both sides helps
slow the airplane to a crawl on landing. A
total of 20° down flaps will give
extremely short takeoff runs that will save
the landing gear from unnecessary wear
and tear when using rough runways.
This is a small Pattern airplane with a
great deal to offer. It will make a good
practice model and could certainly be
competitive. It will let you quickly
become proficient in Pattern flying.
If you are new to Pattern or are already
into competition, this model could be
what you need. It is also great to fly just
for fun. It is smooth in the air, rolls on a
wire, and will help anyone develop his or
her aerobatics skills.
Aerobatics can often be out of the
reach of the average sport flier’s budget.
The good news is that the Groovy 50
meets all the regulations and is affordable.
Congratulations to Andrew Jesky, Jason
Shulman, and Quique Somenzini for
making it onto the US FAI Aerobatics
team. These fine young men will
represent our country in the 2007 F3A
World Championships in Argentina in
November. MA
Edition: Model Aviation - 2007/11
Page Numbers: 86,97,88
Edition: Model Aviation - 2007/11
Page Numbers: 86,97,88
86 MODEL AVIATION
each for the elevator, rudder, and throttle. The review model was
flown with a four-cell, 1300 NiMH pack.
Any four-channel radio and a Y lead will allow you to fly this
airplane. However, a computer radio with channel-mixing options
will allow you to dial away any minor rudder-control coupling.
The instructions for the Groovy 50 are a series of photos and
basic directions. The builder is expected to have a certain amount
of RC model-airplane construction knowledge.
The engine took the most time to install. I attached the O.S.
.61 to the engine mount and then offered up the whole assembly
to the firewall and positioned it so the muffler was lined up
directly under the airplane. This hid most of the muffler and
directed the exhaust gases downward and away from the model.
The landing gear was predrilled and was mainly a matter of
assembly rather than construction. The wheel pants were opened
out to give better wheel/tire clearance. Each of the pants was held
in place with 2-56 bolts and blind nuts.
I glued the stabilizer in place with 30-
minute epoxy and lined it up with the
plug-on wings. I fitted the elevators
IN A PREVIOUS
column I wrote
about airplanes you
could use as
precision
Aerobatics
(Pattern) primers or
as good vehicles
with which to learn aerobatics. Now some ARFs are specifically
called “Pattern” airplanes. Their names often include the label
“F3A,” which is synonymous with Pattern.
The US has five RC Aerobatics classes of increasing
difficulty. The top level is AMA class 406, which is also referred
to as FAI F3A Pattern.
The top-of-the-line Pattern airplanes tend to be just inside the
2-meter size limit. They use big glow engines in the 1.40-1.70 cu.
in. range or large motor equivalents turning such propellers as
those measuring 24 inches.
Smaller, more economical Pattern ARFs are available in the
.45-.90 engine range, one of which is The World Models
Manufacturing Co. Ltd. Groovy 50. This airplane will not break
the bank, but it will do almost everything a 2-meter FAI airplane
can do.
The Groovy 50 spans 54.5 inches and has a wing loading of
20.3 ounces per square foot. It is expected to have a final weight
of 5 pounds, 11 ounces. Its primary construction is of balsa and
plywood. It is precovered with a fuelproof iron-on material.
The wing comes in two parts and is held in place with a wing
tube, as are many, if not most, of the current 2-meter Pattern
airplanes’ wings. Not many items were needed to complete the
Groovy 50.
When you look at the building instructions you can see that
this model was designed for the YS .53 engine, which has been
replaced by the more powerful YS .63. An O.S. .61 FX was
available and would more than hold its own against the YS .63.
It proved to be easy to adapt the airplane to accept an O.S. .61.
No special muffler was required. If you use the supplied muffler
with original baffle still inside, the sound is acceptable to Pattern
ears!
The airplane needs five servos: two for the ailerons and one
[[email protected]]
Radio Control Aerobatics Eric Henderson
Also included in this column:
• Congrats to the 2007 US
F3A team
An in-depth look at The World Models Manufacturing Co.’s Groovy 50
The Groovy 50 uses two pushrods to
operate the elevator halves. Shown is
their neat and reliable coupler.
There is a cavity already in the lower half of the nose that accommodates the muffler.
The exhaust goes out between the undercarriage legs.
The O.S. .61 FX is lined up at an angle to hide and position the
muffler directly underneath the Groovy 50’s fuselage.
11sig3.QXD 9/21/07 10:46 AM Page 86
before hinging the rudder to allow for
more accurate throw and neutral
alignment of the halves.
All the control surfaces used Mylar
hinges, and fitting them was a quick job.
The fin was already part of the fuselage,
making alignment basically automatic.
The fin and the stabilizer aligned correctly
with the wings. This was important
because the factory-fit wing tubes dictated
the finished model’s success.
It took less than 30 minutes to
complete the wing. The plug-on
configuration took away all the hard work.
The aileron servos fit in the wing panels
and needed no extension leads to reach the
fuselage.
The receiver and battery were held in place with double-stick
Velcro tape. The rearward placement of the rudder-servo work
proved to be successful because the CG with an O.S. .61 and
standard muffler on the front came out exactly as in the
instructions.
The Groovy 50’s all-up finished weight was 5.0 pounds, 3.2
November 2007 87
Above: The engine tucks in neatly under
the cheek cowl and the needle is in a safe
place to operate.
Left: All the model’s parts are waiting to
be assembled for flight. The JR 10X radio
gives you an idea of the overall size.
Below: Looking right for the Pattern
part, the airplane is ready to fly. It could
easily be kept assembled, depending on
what vehicle you drive.
The rudder servo was moved to the rear of the Groovy 50’s
fuselage to get the best possible CG.
ounces with an O.S. .61 FX engine. This was pleasing, at 8
ounces lighter than was called for on the box!
The decals were difficult to apply until I enlisted the help of some
soapy water! I spray-painted the canopy on the inside because there
was no need to add the weight of a pilot bust. The last thing to do was
iron down all the covering edges and wait for a good flying day.
11sig3.QXD 9/21/07 11:18 AM Page 87
The first thing to do at the field was
take a bunch of pictures. The second thing
was to break in the O.S. .61. It needed
only a half tank of Coolpower 15% to get
it sorted out.
The break-in process was interspersed
with many questions from the onlookers.
My favorite was “Are you going to fly it?”
I always want to say “Not if I can find a
good excuse!” Just joking of course.
This brightly colored airplane could be
readily seen from the far end of the pits. It
did not take long for the peanut gallery to
shuffle upwind!
As a safety precaution I programmed
the JR 10X fail-safe settings to have the
throttle go to idle and a touch of upelevator
before the first flight. It would be
reset after the flight to match any primary
control trims that were needed.
All the range checks were completely
satisfactory. The gallery was getting
restless, so it was time to fly.
The Groovy 50 tracked straight down
the runway and lifted off easily at half
throttle. It needed a tiny bit of right aileron
trim. The initial testing went so well that I
attempted most of the FAI F3A P-07
schedule. The rolling maneuvers were
easy.
The low rate throws chosen from the
manual were just right for smooth Pattern
flying. The airplane was able to do snaps
in the down-line and up-line without using
high-rate switches. Throws used were
18mm up and down for elevator, 45mm
left and right for rudder, and 10mm up and
down for aileron.
I performed Inverted Spins with rudder
and elevator only. The model stopped
rotating as soon as the controls were
centered. It was capable of long and
extremely slow rolls. (Those always seem
to please the spectators.)
In the knife-edge position I could see
that there was a minute roll to the canopy.
Later I dialed in 11% antiroll mix to fix
the issue. It really only happened in long
knife edges, so it might not be a problem
for everyone. Now knife-edge
performance is excellent. The Groovy 50
also did the Avalanche type of snap with
no problems.
Landing was simply a matter of lining
up on the runway, chopping the gas to a
low idle, and letting the airplane land with
a small flare on touchdown.
Although I aimed this review at
evaluating the Groovy 50 as a Pattern
airplane, it is an excellent sport model as
well. It is predictable and flies smoothly in
the wind.
Takeoffs were augmented with the use
of the ailerons as flaperons. This helped
88 MODEL AVIATION
Tru-Turn now offers the popular Ultimate shape in EIGHT
different sizes! This Spinner looks great on your Cessna as well
as CAP, Edge, Extra, Giles, and many other aerobatic and sport
designs.
You'll find this Spinner available in "120-Slot" for the prop range
used on 4-stroke .91-1.50 motors and "Menz Cut" for use with
most european style props up to 22". Special Slotting is
available upon request too! Use our "Adapter Finder" online to
find an Adapter Kit and learn of any possible Spinner Backplate
modifications you may need at our website today!
See your Hobby dealer or call Tru-Turn direct:
(281) 479-9600 www.tru-turn.com
Made in the U.S.A.
by Romco Manufacturing, Inc.
100 West First Street, Deer Park, Texas 77536
Made in the U.S.A.
the airplane leave the long grass that is
found just before the mower visits the
runway!
Slight up aileron on both sides helps
slow the airplane to a crawl on landing. A
total of 20° down flaps will give
extremely short takeoff runs that will save
the landing gear from unnecessary wear
and tear when using rough runways.
This is a small Pattern airplane with a
great deal to offer. It will make a good
practice model and could certainly be
competitive. It will let you quickly
become proficient in Pattern flying.
If you are new to Pattern or are already
into competition, this model could be
what you need. It is also great to fly just
for fun. It is smooth in the air, rolls on a
wire, and will help anyone develop his or
her aerobatics skills.
Aerobatics can often be out of the
reach of the average sport flier’s budget.
The good news is that the Groovy 50
meets all the regulations and is affordable.
Congratulations to Andrew Jesky, Jason
Shulman, and Quique Somenzini for
making it onto the US FAI Aerobatics
team. These fine young men will
represent our country in the 2007 F3A
World Championships in Argentina in
November. MA
Edition: Model Aviation - 2007/11
Page Numbers: 86,97,88
86 MODEL AVIATION
each for the elevator, rudder, and throttle. The review model was
flown with a four-cell, 1300 NiMH pack.
Any four-channel radio and a Y lead will allow you to fly this
airplane. However, a computer radio with channel-mixing options
will allow you to dial away any minor rudder-control coupling.
The instructions for the Groovy 50 are a series of photos and
basic directions. The builder is expected to have a certain amount
of RC model-airplane construction knowledge.
The engine took the most time to install. I attached the O.S.
.61 to the engine mount and then offered up the whole assembly
to the firewall and positioned it so the muffler was lined up
directly under the airplane. This hid most of the muffler and
directed the exhaust gases downward and away from the model.
The landing gear was predrilled and was mainly a matter of
assembly rather than construction. The wheel pants were opened
out to give better wheel/tire clearance. Each of the pants was held
in place with 2-56 bolts and blind nuts.
I glued the stabilizer in place with 30-
minute epoxy and lined it up with the
plug-on wings. I fitted the elevators
IN A PREVIOUS
column I wrote
about airplanes you
could use as
precision
Aerobatics
(Pattern) primers or
as good vehicles
with which to learn aerobatics. Now some ARFs are specifically
called “Pattern” airplanes. Their names often include the label
“F3A,” which is synonymous with Pattern.
The US has five RC Aerobatics classes of increasing
difficulty. The top level is AMA class 406, which is also referred
to as FAI F3A Pattern.
The top-of-the-line Pattern airplanes tend to be just inside the
2-meter size limit. They use big glow engines in the 1.40-1.70 cu.
in. range or large motor equivalents turning such propellers as
those measuring 24 inches.
Smaller, more economical Pattern ARFs are available in the
.45-.90 engine range, one of which is The World Models
Manufacturing Co. Ltd. Groovy 50. This airplane will not break
the bank, but it will do almost everything a 2-meter FAI airplane
can do.
The Groovy 50 spans 54.5 inches and has a wing loading of
20.3 ounces per square foot. It is expected to have a final weight
of 5 pounds, 11 ounces. Its primary construction is of balsa and
plywood. It is precovered with a fuelproof iron-on material.
The wing comes in two parts and is held in place with a wing
tube, as are many, if not most, of the current 2-meter Pattern
airplanes’ wings. Not many items were needed to complete the
Groovy 50.
When you look at the building instructions you can see that
this model was designed for the YS .53 engine, which has been
replaced by the more powerful YS .63. An O.S. .61 FX was
available and would more than hold its own against the YS .63.
It proved to be easy to adapt the airplane to accept an O.S. .61.
No special muffler was required. If you use the supplied muffler
with original baffle still inside, the sound is acceptable to Pattern
ears!
The airplane needs five servos: two for the ailerons and one
[[email protected]]
Radio Control Aerobatics Eric Henderson
Also included in this column:
• Congrats to the 2007 US
F3A team
An in-depth look at The World Models Manufacturing Co.’s Groovy 50
The Groovy 50 uses two pushrods to
operate the elevator halves. Shown is
their neat and reliable coupler.
There is a cavity already in the lower half of the nose that accommodates the muffler.
The exhaust goes out between the undercarriage legs.
The O.S. .61 FX is lined up at an angle to hide and position the
muffler directly underneath the Groovy 50’s fuselage.
11sig3.QXD 9/21/07 10:46 AM Page 86
before hinging the rudder to allow for
more accurate throw and neutral
alignment of the halves.
All the control surfaces used Mylar
hinges, and fitting them was a quick job.
The fin was already part of the fuselage,
making alignment basically automatic.
The fin and the stabilizer aligned correctly
with the wings. This was important
because the factory-fit wing tubes dictated
the finished model’s success.
It took less than 30 minutes to
complete the wing. The plug-on
configuration took away all the hard work.
The aileron servos fit in the wing panels
and needed no extension leads to reach the
fuselage.
The receiver and battery were held in place with double-stick
Velcro tape. The rearward placement of the rudder-servo work
proved to be successful because the CG with an O.S. .61 and
standard muffler on the front came out exactly as in the
instructions.
The Groovy 50’s all-up finished weight was 5.0 pounds, 3.2
November 2007 87
Above: The engine tucks in neatly under
the cheek cowl and the needle is in a safe
place to operate.
Left: All the model’s parts are waiting to
be assembled for flight. The JR 10X radio
gives you an idea of the overall size.
Below: Looking right for the Pattern
part, the airplane is ready to fly. It could
easily be kept assembled, depending on
what vehicle you drive.
The rudder servo was moved to the rear of the Groovy 50’s
fuselage to get the best possible CG.
ounces with an O.S. .61 FX engine. This was pleasing, at 8
ounces lighter than was called for on the box!
The decals were difficult to apply until I enlisted the help of some
soapy water! I spray-painted the canopy on the inside because there
was no need to add the weight of a pilot bust. The last thing to do was
iron down all the covering edges and wait for a good flying day.
11sig3.QXD 9/21/07 11:18 AM Page 87
The first thing to do at the field was
take a bunch of pictures. The second thing
was to break in the O.S. .61. It needed
only a half tank of Coolpower 15% to get
it sorted out.
The break-in process was interspersed
with many questions from the onlookers.
My favorite was “Are you going to fly it?”
I always want to say “Not if I can find a
good excuse!” Just joking of course.
This brightly colored airplane could be
readily seen from the far end of the pits. It
did not take long for the peanut gallery to
shuffle upwind!
As a safety precaution I programmed
the JR 10X fail-safe settings to have the
throttle go to idle and a touch of upelevator
before the first flight. It would be
reset after the flight to match any primary
control trims that were needed.
All the range checks were completely
satisfactory. The gallery was getting
restless, so it was time to fly.
The Groovy 50 tracked straight down
the runway and lifted off easily at half
throttle. It needed a tiny bit of right aileron
trim. The initial testing went so well that I
attempted most of the FAI F3A P-07
schedule. The rolling maneuvers were
easy.
The low rate throws chosen from the
manual were just right for smooth Pattern
flying. The airplane was able to do snaps
in the down-line and up-line without using
high-rate switches. Throws used were
18mm up and down for elevator, 45mm
left and right for rudder, and 10mm up and
down for aileron.
I performed Inverted Spins with rudder
and elevator only. The model stopped
rotating as soon as the controls were
centered. It was capable of long and
extremely slow rolls. (Those always seem
to please the spectators.)
In the knife-edge position I could see
that there was a minute roll to the canopy.
Later I dialed in 11% antiroll mix to fix
the issue. It really only happened in long
knife edges, so it might not be a problem
for everyone. Now knife-edge
performance is excellent. The Groovy 50
also did the Avalanche type of snap with
no problems.
Landing was simply a matter of lining
up on the runway, chopping the gas to a
low idle, and letting the airplane land with
a small flare on touchdown.
Although I aimed this review at
evaluating the Groovy 50 as a Pattern
airplane, it is an excellent sport model as
well. It is predictable and flies smoothly in
the wind.
Takeoffs were augmented with the use
of the ailerons as flaperons. This helped
88 MODEL AVIATION
Tru-Turn now offers the popular Ultimate shape in EIGHT
different sizes! This Spinner looks great on your Cessna as well
as CAP, Edge, Extra, Giles, and many other aerobatic and sport
designs.
You'll find this Spinner available in "120-Slot" for the prop range
used on 4-stroke .91-1.50 motors and "Menz Cut" for use with
most european style props up to 22". Special Slotting is
available upon request too! Use our "Adapter Finder" online to
find an Adapter Kit and learn of any possible Spinner Backplate
modifications you may need at our website today!
See your Hobby dealer or call Tru-Turn direct:
(281) 479-9600 www.tru-turn.com
Made in the U.S.A.
by Romco Manufacturing, Inc.
100 West First Street, Deer Park, Texas 77536
Made in the U.S.A.
the airplane leave the long grass that is
found just before the mower visits the
runway!
Slight up aileron on both sides helps
slow the airplane to a crawl on landing. A
total of 20° down flaps will give
extremely short takeoff runs that will save
the landing gear from unnecessary wear
and tear when using rough runways.
This is a small Pattern airplane with a
great deal to offer. It will make a good
practice model and could certainly be
competitive. It will let you quickly
become proficient in Pattern flying.
If you are new to Pattern or are already
into competition, this model could be
what you need. It is also great to fly just
for fun. It is smooth in the air, rolls on a
wire, and will help anyone develop his or
her aerobatics skills.
Aerobatics can often be out of the
reach of the average sport flier’s budget.
The good news is that the Groovy 50
meets all the regulations and is affordable.
Congratulations to Andrew Jesky, Jason
Shulman, and Quique Somenzini for
making it onto the US FAI Aerobatics
team. These fine young men will
represent our country in the 2007 F3A
World Championships in Argentina in
November. MA
