Hi All i have recently be putting together my extra 300 and am want your thoughts on what size spinner is best keeping in mind i want the scale look. And what size prop should i be using. The motor that is in it is a revolution 52cc. Any other tips that you might have will be much appreciated. Photo of the plane below is isnt my but it is the same plane and colour scheme.

22-8 for a general prop baseline. They type is controlled by what you want to do. Spinner at 3-1/2".

I have a 3W 55i in my extra and I use a 24 x 8 with a 3 1/2 tru turn spinner, but will shortly be moving to a narrow blade 21 x 11.5 3 blade Mejzlic carbon prop and 4" carbon spinner.