The batteries are connected
in parallel and placed in the
fuselage nose. Directly behind the
bulkhead, the receiver is secured
and wires are neatly channeled
to their destination servos.
Neatness is a must with this many
The Maxford USA Gotha G.IV is
well designed and presents itself
nicely in the air. It has good flight
characteristics and is enjoyable to
fly in calm conditions.
Control Throws and CG
I used the recommended throws and center of gravity
(CG), which worked well. I set up the high rates as the
recommended amounts and then a mid and low rate if needed.
I also added a switch to turn differential ailerons on or off
as desired. Because this is a big, slow bomber with a draggy
airframe, I like the option of differential and it works well.
After three weeks of waiting for flyable weather, I finally
made it to the field for some test flights. There was no problem
taking off from the grass field except for a stiff crosswind.
Upon leaving the ground, the airplane instantly wanted to
weathervane, but it was manageable. Controllability was very
good, but I will probably increase the rudder throw slightly.
This is a calm-day airplane and I pushed the limits during
the test flights. Gusts made it challenging, but the airplane
never felt out of control. Stalls were interesting because I
didn’t get a feel for when one was going to happen. It sort
of sneaked up on me, but when it stalled, it dropped straight
ahead and recovered easily.
There is so much rigging that you’ll want to avoid gliding.
The two 2,200 mAh
battery packs in parallel
provide more duration than
you’ll likely need. During
one test, I made three flights
on one pair of battery packs
totaling more than 10 minutes and the packs were at 3. 85
volts per cell upon landing.
One challenge is trying to fly at a scalelike speed. It’s easy
to fly faster than necessary, but it’s also a safe bet because the
airframe’s drag slows it so quickly. There is certainly enough
power for aerobatics, but I’ve resisted the urge to push the
envelope beyond the scale maneuvers a bomber of this vintage
would have done. The beauty is in flying it scalelike. The sound
of the wind through the rigging is impressive.
I set my motors up as counter-rotating so there was no
torque effect during maneuvers. Although unnecessary, it’s
easy to do with the brushless motors and the availability of
propellers. I recommend following suit.
The Maxford USA Gotha G.IV is a unique offering from the
people at Maxford USA who have made a habit of modeling
subjects not often seen at the field. It is well designed and it
presents itself nicely on the ground and in the air.
It’s not a glider, so I make sure I have enough power to land
and possibly go around for another attempt. The Gotha G.IV
gets plenty of attention and I enjoy people taking notice of it.
If you would like to do a semiscale WW I model that stands
out, this might be a great choice for you. I sure like mine.
68 Model Aviation JUNE 2015 www.ModelAviation.com