I have a great planes .60 size extra with a saito 1.20 and was wondering what size and brand of prop to use?

Paul

I use a 15-8 on my Saito 120

I would start with an APC 15X7 for that engine. Other props to try are the 15X8 as mentioned above and the 16X6 for great vertical pull.

For best performance on the Saito use a fuel with at least 15% nitro and the OS F type plug.