RE: cavitation!!!!
I can get real specific if you like. I don''t want to get you spending a Bunch of cash to get something to work. You can''t go wrong with the Octura Y534. This was mentioned twice now. It should work and cost little. You can also give a Graupner CF K42 a try . Get the one that uses a 3/16" shaft. All the metal props could cost you $30 USD''s or more each. You are starting from nothing so you need everything. The problem for you is where to order from? n.h.schmidt