Looks like it flys well in the BHCorsair. I wonder why Top Flite does not recommend a 5 cylinder radial for it's giant scale Corsair, which is just a little smaller.

From Tower Hobbies (www3.towerhobbies.com/cgi-bin/wti0001p):
<pre>REQUIRES: Engine: Gas 2.5-4.1 cu in (41-70cc) Glow 2.1-2.8 cu in (35-45cc) (do not recommend 5 cyl radial)<span style="font-family: Arial;"> Sorry if it's a dumb question. I'm a noob.</span></pre>