The realities of CPPs

Discussion in 'Inboards' started by cthippo, Nov 6, 2010.

  1. cthippo
    Joined: Sep 2010
    Posts: 813
    Likes: 52, Points: 28, Legacy Rep: 465
    Location: Bellingham WA

    cthippo Senior Member

    After getting feedback on various systems, I've settled on a single diesel with a CPP for the Kayak tender. I've done some reading on the theory of CPPs, but what are the realities?

    How do the control systems differ from a fixed prop and marine gearbox?

    How is engine RPM managed? Do you control it manually? Set it at a constant RPM? Set the pitch and let the engine adjust to the speed needed?

    Is the reducing gear built into the CPP system or is a separate reducer required between the engine and drive?

    I've seen sites mention a cost of around $2000 - $3000 for a suitable system for a 110-120 HP engine. Does this sound reasonable?

    Are there any particular shafting or engine placement requirements?

    Thanks
     
  2. apex1

    apex1 Guest

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