like last time, I purchased a Trex 700 helicopter
right before Christmas (2009), and got it assembled just in time to put
under the tree. I used the Electric conversion kit from
HeliDirect.com, using a Scorpion 4035-560KV motor, and a Kontronik 63V
controller. I got it flying very nicely, so I would have a solid
mechanism to use as the core of this project.
I built this one with the
Electric Conversion package from KDE Direct. In addition to the Electric Mounting,
they have an optional pinion gear support system, and main bearing
holders with integral thrust bearings (yummy):
It hovered perfectly, with
only a few clicks of trim. I used JR 8717 servos for the cyclic, I
was tempted to go "High Voltage" on this one, but I already
have about 6 voltages to regulate to for all the goodies I am going to
hang on it, so another voltage bus would have just added to the
complexity of the wiring (more on that to come).
Well, I got the 700 all put
together and hovering, but before building it into a scale fuselage, I
wanted a bit more of a shakedown. For that I turned to my friend Bryan,
who flies 3D, and his reflexes are MUCH faster than mine (being an old
fart), so he would be far more likely to bring it down safely if
something went awry with the mechanics. He was a bit apprehensive in
taking someone else's $4000 plus machine into the skies, but it all
turned out well.