I got a deal on a TF Score that came with a .46 LA installed. It flew OK but seemed to struggle a bit on the vertical up of the square loop, and slowed down at the top of a wingover.
I've seen a lot of post on ST.51 and various 4 stroke power for this plane.
I thought I had a ST .51, but I just pulled it out of the plane it was in and it is a V.56. older version, baffle piston w/ 1 intake port, ringed piston, ball bearing rear and 1 hole in the middle of the exhaust for muffler mount screw. Crank is marked BB56 on counterweight, and " CHROMED" is cast into the case below the mounting lug.
The engine is an R/C version, but I have a venturi for it somewhere.
Anyone have experience with this combo, or the .56 R/C running C/L venturi in general?