DominicM

Wasn't aware these projectiles could get THAT quick. I guess having a race tuned two stroke, very little fuel onboard to minimise weight and one wing helps ! Filmed in UltraHD / 4K. Watch out for the super slo mo at the end...it's still fast.

downunder

As the commentator said after the flight, that was Paul Eisner who's been setting records for years. Not bad for a 2.5cc engine and zero nitro fuel . The single wing is used to cover as much of the lines as the rules allow because most of the drag comes from the lines, not the model.

DominicM

I wouldn't have thought about the lines causing drag. Thanks. Good to know.

grotto2

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Dominic-
Just as a rule of thumb, an object with a cylindrical cross section traveling through air has about ten times the drag as an airfoil shaped object of the same thickness.
So line drag is indeed very significant in C/L.
Also note that C/L planes require substantially bigger engines than similarly sized R/C planes for the same reason.

DominicM

Thanks. I'll add that info to the vid description. Appreciate it. Cheers.