Very interesting discussion, now for my 2 cents worth!
I built a scratch built cub a few years back. It was light(750 empty) with a c90 with c-85 pistons and a Catto prop.
Hal Stockton came through 2 summers ago with his RANS s-7 with the big bore 912 uls, and we designed a custom exhaust for him. Now of course we had to have a fly off and see who could take off and climb the fastest. Hands down the cub outclimbed him, by 200 fpm or so I would guess.
Of course he could flat walk away in cruise but that's another story!
In my opinion, the big bore rotax would make a great engine for the lsa, but a hot rodded c-85/c-90/0-200 while considerably heavier, are capable of making more power.
I built a scratch built cub a few years back. It was light(750 empty) with a c90 with c-85 pistons and a Catto prop.
Hal Stockton came through 2 summers ago with his RANS s-7 with the big bore 912 uls, and we designed a custom exhaust for him. Now of course we had to have a fly off and see who could take off and climb the fastest. Hands down the cub outclimbed him, by 200 fpm or so I would guess.
Of course he could flat walk away in cruise but that's another story!
In my opinion, the big bore rotax would make a great engine for the lsa, but a hot rodded c-85/c-90/0-200 while considerably heavier, are capable of making more power.
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