My first UCD has an OS pumped 91FS and I've got a 15x6 APC prop. I think it's too much prop--engine seems to get pretty hot here in the GA summers (hot and humid). What props are the rest of you using with 91FS??? I'm thinking I should be using a 14x6 or even a 13x6.

I'm just starting UCD #2. I'll be using an OS 91FX with a Cline regulator. What props are you all using for this engine?

thanks in advance for your help,....WarpedWing.