From what I can tell, the Hirth 3003 engine is only 137 lbs dry. I think I might need a psru with it, because peak torque is at 6000 rpm, but if I am saving 100 lbs in dead weight, wouldn't I be able to get the performance out of an engine like this? Or even their 80 hp model?
Would I even need a psru, if I used a smaller prop?
It is only $10k new with starter and fuel injected, and obviously really really light, which would help useful load if built to 1440 gross weight.
Any thoughts? Is the torque enough to power the plane? Do I need a psru? Is two stroke bad vs corvair?
Here are the specs and power curve
If I save 100 pounds, any reduction in torque or hp (although it is a 110 hp) would seem to be offset. That is 20 percent of useful load. seems like it would beat an 0-200 at 270 lbs installed, bc it increases useful load by 100 pounds, which is 20% of plane's total useful load.