My Pantera 50 is getting a big-block modification to put it on steroids with a . 60 to . 90
engine for really extreme performance. Look for
an update on this great-performing helicopter in
my next Rotor Speed column.
ping pirouettes. To set up his gyro, Bobby
uses a rather small, about 13mm, servo arm
and he maximizes the endpoint limiter of
the gyro. This allows full movement of the
rudder servo so the gyro can perform to its
The XFC also pointed out the need for us to
know what our helicopters are doing in-flight so we can make the needed
adjustments to improve their performance.
This has typically been accomplished by listening to the engine and looking at the
exhaust smoke to evaluate engine performance, while the rotor speed can be
determined using an in-flight tachometer.
Unfortunately, this has been a rather hit-and-miss approach, but until recently it was
all we had. However, to better evaluate my
helicopter in-flight, I have been using the
Eagle Tree Systems Seagull (
eagletreesys-tems.com) wireless data recording system.
A variety of sensors are available to monitor
engine temperature, rotor speed, altitude,
etc., all of which are connected to the Flight
Data Recorder and sent real time to the
Seagull Dashboard for viewing. I ask a
friend to monitor the Dashboard and relay
the information so I know exactly what’s
happening in-flight and can evaluate a set
of rotor blades, engine mixture, etc. Then, I
can make small adjustments to the helicopter and evaluate the changes on another
flight. It doesn’t take long to see the effect
of these changes, and whether or not they
improve flight performance, head temperature, etc.
After returning home from the XFC, I
have a renewed interest in advancing my
flying skills. It was such a pleasure to see
what our helicopters can really do in the
hands of dedicated pilots, and the information they were willing to share is priceless.
If you have any questions or comments
about my column or helicopters in general, I can be reached either through this
magazine at firstname.lastname@example.org or on the
RC Zone at radiocontrolzone.com. Until
next time, remember to keep up your
The Eagle Tree Systems
Seagull wireless data
recording system lets me
evaluate in-flight performance of my helicopter in
real time. This data can
then be downloaded to my
computer for more analysis and record keeping.
Hitec ( hitecrcd.com) has recently released
their new HS-7695MG digital programmable
servos. When used with the Hitec HFP- 20
programmer, we can customize and test
each servo for a specific application.