I'm confused (as usual) about the various -tiger branded engines.  I have seen mentioned on the forums and in magazines the Super-Tiger, the Thunder-Tiger, and the Aero-Tiger.  Are they all different engines from different manufacturers?  I noticed that many of the high scoring flyers at VSC used an engine called an Aero-Tiger 36.  What is this engine and is it commercially available?

Thanks for any help and explanations.

All are different.  The Super Tigre (re) was/is made in Italy/China.  Very old engine company and some of the ST's are icons in the stunt world, especially the 46 and small case 60.  The "newer" G-51 is a great stunt engine in it's own right.

Thunder Tiger is a different company, made in Taiwan, IIRC, and makes a lot of mainly R/C type engines.

The Aero Tiger 36 is based on a Thunder Tiger 36 case.  Randy Smith sells those which he fits with a new sleeve/piston of his design, does whatever else he does, and mainly transforms it into a killer CLPA engine!   I believe that Henry Nelson makes the parts for Randy which are about as good as one can get.  It runs completely different from the stock Thunder Tiger 36, and is a super friendly engine to use with PLENTY of usuable power.

Steve...
The AT .36 is a gem....and probably the least expensive "pure stunt" engine available....