stg61abc,

I used 8x8, 9x5, or 9x6 props on my 25. I used 10% nitro and stock muffler and liked the 9 x 5 the best. I later found a muffler that had slightly more volume and allowed 900 rpm increase using the same fuel as above. I liked the 9 x 6 after that. The 8 x 8 was for speed applications. It (8x8)would take a little longer to get off the runway, but was noticeable faster in flight and very quiet. I hope you enjoy the 25 as much as I did/do..



turbo

correction( edit)