I run mine with the Magnum.52 and an APC 12.25x3.75 FF prop GREAT combo. with the FX's I have had the best luck with the APC 12x4 on my profiles,the 12.25x3.75 at 2500ft ASL just spins up to slow for me, try both. If for some reason you aren't happy with the 12 inch props my next choice would be 11.5x4 FF prop or maybe just a plain 11x4.


when you get your magic extra I would sugest you buy a new fuel tank the stock tank is JUNK,make sure you fuel proof the firewall and tank compartment with thined epoxy. i also added hard wood doublers right above the balsa doublers in the fuse wing saddle area, the fuse is kinda weak right there. I also put flying wires on the tail surfaces ,helps keep the stab on IMHO. on the rudder i used pull/pull cables instead of the push rod set up,either works. I really didn't like the wheel coller elevator push rod set up, I used a short piece of dave brown fiberglass pushrod and epoxy to join the 2 rods together, i also placed bends in the rods once they were slid into the hollow fiberglass pushrod to keep them from coming out just in case the epoxy loosened.

oops i forgot i didn't use the ARF pushrods either, replaced them with 2-56 rod and clevises to match. I also glassed the wing joint, and replaced all the soft metric screws with good hard scoket head screws. If you do replace the tank and you really should set it up so the center of the tank is about 1/4 below the High speed needle valve, fill and redrill the hole in the firewall for the new location. the stock tank is MUCH to low for good fuel draw IMHO.
John