ORIGINAL: dick Hanson

SFG is -I believe - George Hicks idea.
George is an aeronautical engineer by training and vocation.
also a active modeller who does not "go along with the flow " when it comes to design work.
His little biplane foamie design "Tensor"sold by Horizon a few years back was an exercize in SFG uses.
If you tilted inthe roll axis- the model did NOT turn -it just drove merrily along with one panel down the other up. It was sometimes very disconcerting to fly as a turn, required rudder - always . I would say, as a model designer, he is as good as it gets if you are looking to figure out or fix an aerobatic setup.


EDITED