Hi,
I posted this first in Q&A and didnt really get any usefull info.
My first gas engine was completed yesterday by a friend in my club. Its a 52cc conversion engine. [link=http://duropower.com/item.asp?PID=86&FID=3&level=1]http://duropower.com/item.asp?PID=86&FID=3&level=1[/link] They went up on their price since I bought it...I got it for $80 including shipping

. What I was wondering is, how many pounds of thrust can this engine produce? When it was on the test stand it turned an old 20x10 Dynathrust prop at 9600 rpm. It weighs 6lbs with the stock muffler and carb (with will probably be changed).
I'm going to design and build a Biplane around this engine. I want it to be capable of performing basic 3D manuevers. What should my target weight be?
Here's some video of the engine.
[link=http://video.google.com/videoplay?docid=7063498753981003477]Running[/link]
[link=http://video.google.com/videoplay?docid=1899399485091143431]Starting[/link]
Thanks for reading