I may have too much time on my hands but I am wondering why impellers have to be made of flexible material like rubber, silicone or whatever? Most boaters are a little worried about their impellers and when they should be changed so that a failure doesn't leave them in a crisis situation.
Why do they have to be the way they are??
Doc on the Tenn Tom
Why do they have to be the way they are??
Doc on the Tenn Tom