RE: Sig Hog Bipe
it has some down-thrust built into the firewall, 1.5 deg if i remember correctly. However while building it, i didn't notice any right-thrust. I haven't finished building the plane, so i haven't flown it yet. I'm not sure it would need it however, it seems like the top wing would break up the "p-factor," but maybe somebody with more experience could chime in about this.