The Controllable Pitch Propeller, a summary.

Discussion in 'Props' started by apex1, Dec 26, 2009.

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  1. mark775

    mark775 Guest

    Thank-you, Richard. Not classification but US CFR Subchapter "T" (small passenger vessel) which follows ABS. The load is highly variable, can be anywhere from light to full fuel and 14 passengers, two crew, or maybe 7 tons of fish or building materials on deck. The boat has delivered 9,500 liters of water.
    No trawling. Top speed, light, 24.2 knots, cruise 18.9 knots. Heavy, 20.2 knots, cruise 16.9, typical. This is with present propeller, which is wrong. It is a .66m Diam. and I can swing .74m at 17% clearance.
     
  2. apex1

    apex1 Guest

    With proper clearance of min. 15%?
     
  3. mark775

    mark775 Guest

    I edited above to show 17%
     
  4. powerabout
    Joined: Nov 2007
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    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    I have looked at your gallery
    They are nice looking vessels.
    I would be intersted to know what they are powered by?
     
  5. apex1

    apex1 Guest

    By catpinkle, of course.
     
  6. apex1

    apex1 Guest

    Mark
    the offer:



    Technical Specification 5461, Propeller Plant

    Client: "Classic Cruisers"

    Fishing vessel

    Design Parametres:
    • Vessel type: High Speed, single screw monohull
    • Engine /output (kw): 368 kW at 2600 rpm
    • Design power, propeller systems: 368 kW
    • Gearbox: Nogva HCA-210, reduction 2,06:1
    • Propeller / gear box output speed: 1262 rpm
    • Max. propeller shaft angle: 8°
    • Ship speed: 25 knots
    • Classification: No class

    Scope of supply (per shaftline):
    • One propeller mounted on propeller shaft, shaft equipped with flange.
    • One water lubricated stern tube.
    • 3 sets of installation/operation manuals with arrangement drawing in English
    • Packing for covered transportation


    Features/Technical data:
    • System designation: 4H70-700 HS
    • Propeller type: Single screw, low noise/high speed, designed for gear
    with built-in servo
    Number of blades: 4
    Propeller diameter: 700 mm
    Propeller shaft diameter: 70 mm
    Propeller shaft length, approx. 3 m
    Stern tube length, approx. 0,75 m
    Propeller hub and blades material: CuNiAl
    Propeller shaft material: Stainless steel EN 1.4418
    Stern tube material: Aluminium
    Stern tube bearings: Thordon type
    Lubrication of stern tube: Water

    € 13.800 ex works Norway, excl. gear.


    In addition you need a electrical or hydraulic actuator (I assume you will not operate the prop by hand), that will be another 3.000€.

    Find attached the datasheet of the prop.

    Regards
    Richard
     

    Attached Files:

  7. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    Thats nice setup..
    Meantime I have checked about the possibilities sailboats/motorsailers and unfortunately SABB told me "Viser til din forespørsel om HVP25 gearbox, og må dessverre meddele at det ikke er mulig å vende propellen til ”feathering”. " which basicly means the only CPP manufacturer possible for me is West Mekan so I'm stucked with standard gearbox..
     

    Attached Files:

  8. SeaJay
    Joined: Jun 2007
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    Location: Sacramento

    SeaJay Senior Member

    Thanks for the post Teddy. I don't think SABB responds to US e-mails, or at least to inquiries from the US about small sailboats. It looks like WM is where we need to go. I'm glad Richard began this post as it has caused me to reconsider the installation of a CPP system.

    Regards,

    SeaJay
     
  9. apex1

    apex1 Guest

    Glad to hear it had some sense! You may send me a sixpack then..............?............:D
     
  10. TollyWally
    Joined: Mar 2005
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    Location: Fox Island

    TollyWally Senior Member

    Pardon my ignorance, are those prices in Norwegian Kroner?
     
  11. apex1

    apex1 Guest

    € 13.800

    large enough?
     
  12. TollyWally
    Joined: Mar 2005
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    Location: Fox Island

    TollyWally Senior Member

    Pardon my provincialism apex.

    Being an arrogant American I honest to god don't know what a C with 2 little slash marks means. The quote said 13,800 ex works Norway. When I translate Kroner it comes out $3,800. a good value. When I convert Euros it's closer to $29,000.00 a different story.
     
  13. apex1

    apex1 Guest

    13.000 € are about 20.000$ today! not 29.000. (maybe tomorrow, who knows)
    And how could one expect to get a replacement for a 20k $ system at 3.800$?

    Regards
    Richard
     
  14. TollyWally
    Joined: Mar 2005
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    Location: Fox Island

    TollyWally Senior Member

    Be that as it may Apex,
    We just don't get out much. I personally roam a loop about 5000 miles end to end denominated in dollars, gallons, miles, yards, feet and inches, horsepower and foot pounds, 120volts ac, 4' x 8' 1/2 " plywood, 2 x 4 lumber and board feet (nominal). At the track the ponies run in furlongs. We set the pace and the standards for a long time, now it looks like the Chinese are going to have a crack at it, economically anyway.

    I converted your prices here
    http://www.xe.com/ucc/convert.cgi?Amount=20000&From=NOK&To=USD&image.x=36&image.y=10

    13800.00 + 3000.00 =16,800=
    16,800.00 NOK = 2,963.52 USD
    16,800.00 EUR = 24,328.66 USD plus shipping

    My prices were wrong on the first post as are yours unless this converter is wrong.

    "And how could one expect to get a replacement for a 20k $ system at 3.800$?"

    No Apex I would expect to pay around 20 to 25 thousand for a $24,000.00
    system NOW THAT I FINALLY HAVE AN IDEA HOW MUCH IT MIGHT COST.

    While I can readily see the advantages of a CPP system it is sobering to compare the price of a new CPP unit capable of handling 300-500 hp with a replacement borg warner velvet drive such as I now have. I fully understand that I would have to compare the velvet drive along with a shaft and wheel to be comparing apples to apples. I wonder what the price of used gear might be?
     

  15. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    http://www.finn.no/finn/boat/object?finnkode=19781388 This is old announcement but in this site they have some units for sale time to time, smaller ones like this almost constantly. They got prices in NOK and the site in Norvegian so.. CPP is called Vribar propell.. 25000 NOK is about $4400 or 3050€
     
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