I've been looking into this for a little while and here's what I've found:

A Pitts S1C/D (2/4 aileron, flat wing) with a small enough (100hp) engine
may fit. I can't find stall numbers for the C. The S1S is too fast both in
cruise and stall speed (stalls around 55 - 60mph). (I'm not sure you
could/would want to put a lower power engine in it.)

Most biplanes I've looked at have too high a stall speed. The starduster
VStar (SA-900) with the right engine might fit. Their site
(www.starduster.com) claims it's aerobatic, but I haven't seen any flying.
a baby great lakes might work, but the stall numbers I've seen for it are
around 50mph, so it's a little high. (without flaps, the stall required is
the 44mph number)

It seems to me, to get a reasonably performing LSA for aerobatics you need
to go monoplane. The Rans S-9, S-10 are aerobatic and I know there are
people who have competed with them (www.rans.com). The Sonex
(www.sonex-ltd.com) claims to be aerobatic, at the right gross weight,
although I don't know of anyone flying aerobatics with it. The S9/10 and
the Sonex are both kit planes.

If you are willing to restore instead of build, some variations of the J-3
cub and Taylorcraft will fit the LSA definition as well.

Hope this helps.

I would be interested in hearing about any other options you find out there.

Rob Petit

"At7000ft" <at7000ft@aol.com> wrote in message
news:20020707194812.11357.00002202@mb-cq.aol.com...
> I am a 2200 hr. CFII with no medical who used to teach flying including
> aerobatics long ago. I also like building things so when I heard of the
> upcoming Sport Pilot rating and Light Sport Aircraft (LSA) category I
started
> thinking maybe I could get into flying again. After having experienced
> aerobatic flying I think I would be bored with something I couldn't do
> intermediate (inside) aerobatics (have no interest in competition
aerobatics).
> Question is what options are available? I would prefer a biplane and with
the
> gross weight limit 1232 lbs. a 2 place is out of the question. How about
an
> S1-S Pitts? If kept light and with a medium HP engine (maybe 150 or under)
do
> you think it may qualify with a max speed under 132 mph and stall under 51
mph?
>
> And another associated question, the LSA max stall speed in what they call
> landing configuration is 44 mph. If a LSA has no flaps (and thus no
landing
> configuration) then must its max stall speed be 44 mph rather that the
> non-landing configuration max of 51 mph?
>
>

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