How do the Cobra and Argus compare? and where Does Ares fitin the lineup? Which would be best choice for first I beamer? My real wish is to build a Ballerina- does anyone have the kit for that?
The Cobra is around 55" wingspan, and is subsequently a little longer in the fuselage than the Argus. The "published" Argus was just under 50" WS.
The '59 Ares ia a 50" WS and carries a completely different airfoil than either of th eother two.
The Cobra and '59 Ares have an inherent better corner than the Argus, which is why Steve designed the Cobra. Steve actually built a different Argus to fly in the '60 World Championships with improvements to increase the corner.
The published Argus does some of the prettiest round manuevers you will ever see.
The only difference in buiolding either of them is that Steve used a "flat" leading edgfe stock while Billy used a more normal vertical LE. Otherwise they build th esame.
I have built an d flown all three. For the modern pattern (lots of squares!) the Cobra and '59 Ares will be ahead of the game. The Cobra, since it is bigger, can definitely use a stronger engine. An OS 46LA, ST 46, Aero Tiger 36, etc., would be good choices. We have flown the Argus wioth a Weber 32, Fox 35 (stock), L&J Fox 35, and Double Star 40.
In the Ares we have used an OS 32, Weber 32, and a square head Magnum 36, which was the best engine we used in it.
Bill <><
BTW, The Argus has minimal prop clearance in "stock" configuration.