Lost propeller needs temporary replacement- help

Discussion in 'Props' started by yodani, May 22, 2016.

  1. yodani
    Joined: Nov 2010
    Posts: 190
    Likes: 1, Points: 18, Legacy Rep: 16
    Location: Danube Delta

    yodani Senior Member

    I just lost a propeller during a morning manouvre. I'm not sure we will be able to recover it as the water is 6-7 m deep and the current very strong.

    I'm not sure what the characteristics of the propeller where as it had nothing written on it. I'm reluctant to buy a new prop as I might repower next year so I've been looking on eBay to find a matching one.

    The boat is:

    Length - 8m
    Beam at water line- 2.8m
    Draft without keel - 1m
    Engine - 45hp@2400rpm diesel
    1:2 gearbox
    Two bearings on schaft
    Propcalc is recommending a 19.1x12.3 3 blade prop and a 18x12" four blade prop.

    These are the ones I found:


    https://www.ebay.it/itm/231835541513
    https://www.ebay.co.uk/itm/331856818129
    https://www.ebay.co.uk/itm/222108668647
    https://www.ebay.co.uk/itm/231928372552
    https://www.ebay.de/itm/201586495210

    What do you think?
    __________________
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  2. gonzo
    Joined: Aug 2002
    Posts: 13,613
    Likes: 383, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Is this the propeller that you thought had too much diameter and pitch? Did someone forget to put the nut on? 6-7 meters of water is a really easy dive. A metal detector will pick up a large object like a propeller with no problem.
     
  3. yodani
    Joined: Nov 2010
    Posts: 190
    Likes: 1, Points: 18, Legacy Rep: 16
    Location: Danube Delta

    yodani Senior Member

    No Gonzo, this is another boat. The 7 m deep river with 6km/h flow is not an easy dive. I will try to recover it with a neodium magnet but I need a backup just in case.

    The nut fell of for sure... And it was welded safety between nut and prop :(. The boats operating in shallow waters hit things and if the cone was not perfectly tighten...

    We have three boats that look alike...
     

    Attached Files:


  4. gonzo
    Joined: Aug 2002
    Posts: 13,613
    Likes: 383, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    In places with a strong current, it is possible to drop an anchor upriver from where the search are is. Then a long line is used by the divers to drift downstream. Are the propellers made of steel?
     
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