ORIGINAL: mjerome
Thanks guys! That sheds a little more light now.
One last for now, could you direct me to where I could shop for these engines, maybe online also? It would be nice to see the brands commonly used around. Also, are there engines which run on electric power and not gas? That would be nice.
I suggest you look at the very first posts in the "Beginner" forum. They are "Sticky", meaning they stay at the top of the list, and they are packed with information on planes, engines, electronics and techniques.
When you have read those posts, look in the Engine forums and the Electric Beginners forums, and you will find plenty of information.
Best wishes,
Dave Olson