Saito FA-120 & OS FS-120 5%

Two 1980's 120 size 4 strokes run on 5% fuel. Both engines had recently been torn done, cleaned up, and reassembled.
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[@jimmywade8259]

Had one just like fa-120

[@RBAERO]

Very good test. But 5% Nitro and % % Castor? Thanks

[@BWH1990]

The Saito just looks so much better to me.

[@dmrcflyr2]

Yeah, the OS is a bit awkward in appearance.