I didn't want to put the entire question in the Subject line so here goes....

Will the LA .46 be enough power for a 56" Span 50 ounce thereabouts Gypsy???  I think so, but would like all other opinions as well??

  Plenty.

    Brett

Yep., LA 46 would be a great engine for that, perfect size,,
I know my LA 46s ahve pulled lots of weight,, nope aint gonna say, but its at least 8 oz more than your projected weight, on a 570 inch wing, and didnt squack at all,, it was great then too,,

My profile Cardinal is 50 oz. and the L.A. 46 goes vertical with authority anytime I request it.........Also using the APC 12 1/4 x 3 3/4 prop.

Ty,

Yes, I have cut a set of ribs for the larger Gypsy but that's as far as I have gotten so far.  I'm going to build up the Stab and Elevators to lighten the rear load some so the LA .46 will balance it pretty well.  Next is to extend some 36" 1/8 inch balsa to 37" to make the slightly longer than standard fuselage.  I've also dreamed up fuselage doublers out of 3/32" balsa laminated to 1/32" ply with carbon fiber in between.  My buddy Mike Thompson built one in '73.  That one weighed 48 ounces and was powered with a GMA modified OS .40H-S.  I'm going to duplicate that plane except for the engine.

Jim Pollock