I am running 5000 rpm with a standard Mirage 25 and 4800 with a Mirage Plus 25 at WFO. I am thinking about trying a Quad IV. Should I stick with a 25 or go down to a 24 to compensate for the larger diameter and extra blade? I'm thinking the 24 would be the better but I'd like to get some opinions.

Stock 502 Mag(415hp) and X is at 17".

Thanks

noboat, what pitch is your Mirage Plus?

Julie

Whoops, my bad, they were both 25s.