Hi, I am another newbie to the group, with a question. I currently have a 12" (diameter) x 22" crossflow turbine set horizontally at the end of a 11" (interior diameter) 13" (OD) pipe from a pond providing 10' useable head. There is enough water to run the pipe full. The turbine is set and works well, but I have not yet achieved a good nozzle design, in particular: what is the configuration and size of the rectangular opening, and how is the shielding set up to allow water to reach the turbine blades without waste. Diagrams, references, ideas welcome. Thanks. Chas Daloz
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