Ok so yeah, I'm a newbie...

But a curious one... I see some gorgeous scale models, that are almost perfect but apart from one thing, they only have 2 bladed props? Why aren't there more 3/4 bladed props around? I know u can get static ones but what is the reason?

Cheers.

The biggest reason is that our engines turn much faster than full scale engines do, and the props, being smaller, bring the blades closer together. With a 4 bladed prop, each blade gets lost in the wake of the blade before it, therefore becoming much less efficient.

Ah cool, makes sence now! Shame though, nice 4 bladed prop would look so much better!

It's also a bugger to get a multi-bladed spinner or form your own. Most "real" full size multiblade props are also variable pitch to take advantage of the added surfaces. They also add significantly to weight - and therefore torque.

And they cost too much!