Hello, I recently picked up a .60 size pattern plane ( not sure the model) with an OS 61V. I'm wondering if someone could help me with suggested prop size for pattern flying and maybe the practice rpm range. The headed appears to be full length which I assume based on my experience with tuning .45's is not correct. This will present a problem if I have to shorten it because the pipe is covered on top of the fuse with piping routed and exiting the bottom of the plane but I can probably resolve that.

Thanks in advance for any advice.

Cody