Discus & Handlaunch Flying
Handlaunch flying is exactly what it sounds like. The model is
thrown in to the air and then flown. There are two distinct styles,
javelin and discus launch.
Javelin was the original style where the model was thrown like a
spear or javelin, over arm in to the air. This had problems, it
required a reasonable degree of physical fitness and flexibility.
Injuries to shoulders and backs were not uncommon.
This led to people of lesser physical ability experimenting with
Side arm launch (SAL) which metamorphed in to Discus Launch (DLG) In
Dlg, the flier spins with the model like a discus thrower and
releases the model with a whipping type motion. This requires less
physical ability (but better timing!), and often results in a higher
These 2 styles have produced distictive types of models to cope
with the stresses of the different launch styles. The major
distinctions are: as far as I am aware all DLG's are cross tail and
have a sub fin. This helps to reduce yaw in the launch phase. DLG's
are also generally stronger built, involving composite materials in
various areas of their construction.
Some "entry" level models for these disciplines
This is a
Terminator for Javelin style launching, simple to build from the
instructions on the Charles River RC site ( see
Gallery Page for more
unknown model, but it demonstrates the simplicity of this type.
Again for javelin style launch.
is a Gambler+, built from plans by Wright Brother RC, they also do a
kit for this.
from Mountain Models.
Some more advanced models
The Feather XL from Raptor
Aerosports. A competitive Javelin launch model
Competitive DLG model. Plans available on theCharles River RC
site. designed by Dr Mark Drela
Even wings can be discus
launched. although they tend to be more fun models than for
competition. The Boomer EX2
There are some excellent links for DLG/HLG at
The F3k Website.
Including some slow motion video footage of DLG launching.