Eagle, are you buddies with vikas1974?

You are both from Down Under, and both trying to Design and Scratch Build an airplane, and if I may be so bold, you are also both totally clueless. (I don't mean to be rude, but your questions blatently point out that you know nothing about airplane construction).

I would HIGHLY recommend that you get an inexpensive kit and learn the basics before attempting anything on your own.