In 2003, Lithium-ion Polymer batteries and pager motors
enabled ultra-light micro-planes to make a huge step forwards.
Creation of 10 to 20 gramme R/C planes became available to everyone
while again some pionners were achieving amazing performances totally
unbelievable up to now. It's up to you to draw your own conclusions
...
The SE-5 by Matt
Keennon
A
1/72nd scale SE-5 sport scale model from sheet balsa. It
uses muscle wire for rudder and elevator control, about 60
position resolution. A 2.5V regulator drives the actuator to
keep the travel and current down. Pretty much everything is
custom/scratch from the radio to the gears to the prop.
According to Matt it flies wonderfully, very responsive,
lots of climb. Endurance time around 2 to 3 minutes.
The
2.7 grams Nanoflyer is by far the smallest and lightest
electric powered contra-rotating coaxial-rotor RC helicopter
ever built so far. It is powered by an on-board battery and
it uses the Proxflyer concept (his big brother at 6.9 g) to
give it inherent stability. It was built to test how small
can be helicopters that use the passively stable Proxflyer
rotor concept.
A
1/72nd scale SE-5 sport scale model from sheet balsa. It
uses muscle wire for rudder and elevator control, about 60
position resolution. A 2.5V regulator drives the actuator to
keep the travel and current down. Pretty much everything is
custom/scratch from the radio to the gears to the prop.
According to Matt it flies wonderfully, very responsive,
lots of climb. Endurance time around 2 to 3 minutes.
