Originally Posted by
cat0020
Well, based on your preliminary answers, you're looking for two 20" wheels recumbent with low B/B height, under 25 lb. and cost under $2000.
Recumbents with dual 20" wheels usually have more rolling resistance than a dual 26"/650c or 20/26" wheeled recumbent. The smaller the wheels the more rolling resistance, that's the reason why most racing bikes are dual 700c wheels, early 80's time trial racing bikes even have 29" wheels.
So, to lower the rolling resistance, you should consider larger diameter wheels or at lease larger diameter rear wheel.
With low B/B height and more upright riding position, you are limiting your power output to mostly your legs. The futher you recline (to a point) you are able to use your back muscles (and body weight) more for the pedaling motion, hence the lowracer riding postition.. not just for aerodynamics.
so, you might also want to consider trying some 'bents that offer more recline to the back of seat.
Under 25 lb. and $2000, I think that could be more difficult to find but not impossible.. used bikes might be more likely.