Upon receiving the
package from CAPTRON, I must admit I was a
bit overwhelmed at first. I had previously
used their products such as HeliCommand 3A
and HeliCommand Rigid. This package
definitely has so much more.
It took awhile to figure
out how I was going to install the Profi. I
wanted to be able to use the optical feature
for the review, which meant a clear view of
the ground. At the same time, I had to
figure out how the center of gravity of the
helicopter will be affected by the entire
The GPS by default was
going to be installed on the tailboom, which
posed no problem…yet. During a test flight
I accidentally knocked the GPS and noticed
that my initial installation was
inadequate. I then purchased the aluminum
tailboom belt for the Trex600 (as this is
non-magnetic) as well as some stainless
steel screws to secure the CF plate to where
the GPS will be mounted to. This
installation is now rock solid. Just a
reminder, whenever the GPS mounting is
disturbed you must recalibrate.
The air pressure filter
installation was another issue I had to
figure out, as this is affected by air
flow. It was a bit cumbersome finding a
location where the "yellow ball filter”
would have the least amount of air
disturbance. During my test flights I found
the yellow ball not as consistent in holding
altitude. CAPTRON sent a new air pressure
filter that worked much better than the
yellow ball. The new air filter is much
easier to find a location for installation
due to its thin profile.
The RC module cable and
regulator cable also presented an issue at
how to lay them out without looking
cluttered. The "blackbox" was my
solution; it protects the RC module
connections and makes the overall
installation look orderly.
Flight Tests and
I found the Profi's boot
up time excellent with GPS. If booting up
in the same location it's even faster, as it
keeps a record of its "last known
On my first night out of
test flights the autotrim function was not
working. I was puzzled at first as I
thought it would be the same as HC 3A and
Rigid. I was wrong. There is a small red
LED on the bottom right of the LED monitor
on the Profi. If you raise the collective
stick you will notice this red LED will turn
off. Basically, you cannot autotrim in low
stick position. Once I figured this out the
system performed as expected. The
horizontal hold function is excellent.
Minimal cyclic input is all that it takes
Optical position hold is
dependent on ground contrast, but once it's
locked it holds position quite well, even
with moderate wind. Keep in mind that
ground surfaces which offers no contrast,
such as snow, will prove to be a difficult
surface to lock onto.
Altitude dampen mode is
excellent. As shown on the videos, it locks
the altitude of the helicopter during flight
quite well. The same for altitude hold
mode. Once the gain settings are adjusted
correctly the altitude is pretty much
locked. What I like about the H pilot is
the ability to adjust gain "on the fly" with
the sliders to fine tune the hold at varying
My favorite altitude
setting is "SINK STOP". This basically
senses the helicopter's altitude during
descent and slowly lowers the helicopter's
altitude until landed.
During low level flights
the Profi has another hidden instrument to
hold the helicopter's altitude. It has an
infrared sensor that works within 1.5m that
senses distance to the ground.
The internal tail gyro is
good -- it's good enough for professional
use. I would stay away from using it in any
hard aerobatic or 3D flights. Remember the
internal tail gyro is required for the FACE
home function. I had to use my Futaba 9254
tail servo as suggested by CAPTRON and could
not use tail servos such as 9256 or BLS251.
The FACE home function
will probably be the favorite for pilots who
venture out into the distance. It really
does "Face Home". "HOME" is where the GPS
first acquires coordinates. So if you need
this function remember to initialize the GPS
in a location where you have designated as
your landing zone. You could also activate
the Face home function during failsafe.
If you do not wish to use
the Face home function then you could use
any external tail gyro. I did not find any
issue with most popular tail gyros.
GPS position hold is
excellent. It works within its accuracy
range of 2.5m. Of course GPS hold is
dependent on the number of satellites that
is available. Stopping distance is good.
It doesn't abruptly stop the helicopter,
after releasing the sticks from forward
flight, on the spot but rather gently slows
down the helicopter then holds position.
Pilot input is instant,
at any flight mode the pilot is able to give
input to the helicopter without any delay
either cyclic or collective input.
With this system you are
not limited to the number of channels that
you are allowed to use. Also on the manual
it states to plug in power into the RC
module. You could bypass this and plug in
power directly into the receiver. Again you
are not limited to the number of channels.
So you could plug in a redundant power
source into the receiver as well as other
controls such as for cameras.
I did plan on adding the
RIGID function to this review, but
unfortunately I didn't like the flybarless
head that I had purchased. I will look into
other models and will update this review. I
have worked with HC Rigid on a flybarless
Maxi-Joker2. It works really well even with
the "hobbyist" version. I'm quite certain
the Rigid function on the Profi works well.
The only task that users
may find troublesome is finding the optimal
setup in the software for their helicopter.
As you can see there are a lot of options.
You have to remember the Profi has been out
in the market for quite some time so it's
software is very mature compared to its
peers. Take into consideration that you
will need some time to learn the software
and fine tune the setup of the helicopter.
Given all these features
the pilot will have to be competent at the
controls. There are a lot of options
available, so knowledge of the transmitter's
controls and features are mandatory to fully
utilize this system.
Improvements? One thing
I would wish for is the altitude sensor be
built inside the Profi's case and eliminate
the need for an external sensor. I do
realize the Profi is already packed with so
Second, a flight data
recorder for analysis would be useful.
Data could be saved on an internal or
Data such as pilot input vs. system output,
altitude, distance, power, head speed, etc.
This information could be used to analyze
flight performance or crash analysis.
Third, for aerial
photographers/videographers, an optional
gimbal stabilizer would be a neat function
to have as an add-on feature later on.
Customer service with
CAPTRON is excellent. I have dealt with
them in inspecting a crashed product and I
received the unit back in a timely manner.
Communication back and forth is excellent as
CAPTRON didn't hold back
with their Profi/GPS combination. This is a
feature "jammed" packed system. I can't
wait to see what else CAPTRON has brewing...
thank you to Joachim from
CAPTRON for making
this review possible.
Rotor RC for their continued support, contributions and
assistance in making this review..
Other RC Heli Autopilot Reviews
The use of remote
control aircraft models is inherently a
dangerous activity that can pose serious
injury or total destruction of the
aircraft itself if not operated and
maintained properly. You must possess a
high level of pilot competency to
control your aircraft in all
conditions. If you are new to this
hobby please seek professional help.
The Profi/GPS is
complicated equipment that requires
intermediate to advance remote control
helicopter piloting, building and
configuration understanding and
experience. Even with its failsafe
feature there is still a possibility of
system failure that can occur that is
beyond the system's control.
Therefore test flights, ritual pre and post flight
inspections should be performed.
I have made every effort to ensure that
the information provided in this review
is accurate and up-to-date. I will
continue to update this review as I
receive new information from CAPTRON.
If you notice any errors or details that
I may have missed please let me know as
soon as possible and I will correct them
Any use of information, in text, images
or videos, in this review is entirely at
the risk of the user. Rosauro
Photography assume no responsibility and
shall not be liable, directly or
indirectly, to the user or any other
third party for any damage or injury
resulting from the use of the
information within this review.
Rosauro Photography hereby formally
disclaims liability in respect of such