If you are building a KR2S you may not want a real light engine. My 2S is built per plans with a Corvair and I did not have to put ballast anywhere and I could not be happier with the CG and stability. I chose the Corvair mostly for cost (Remember I only have about 2500 in the engine and 3500 firewall forward) but I enjoy building engines and the Corvair is very simple and easy to work on. Yes you can choose to spend a lot of money on a Corvair but it is not required. The choice is yours.
Bill and 41768
