Cummins Marine Diesel Repower Specialists Forums Cummins Marine Engines QSB 5.9 extended slow speed cruising…..

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    Topic
  • #53708

    Robert Vetrano
    Participant
    Vessel Name: Knot Flying
    Engines: qsb 5.9
    Location: Merritt Island FL
    Country: USA

    I have twin 5.9 380s. Some friends are doing a paddleboard charity this summer, paddling from Bimini to West Palm. 80nm. Yes, they’re crazy. I will be their support vessel. I’m expecting this to take about 12-14hrs. Are there any concerns with going this slow for this long? I’ll likely have to be idling, or slightly above, for the whole crossing. Should I run up on plane 1x per hour or something like that?

    Thanks!

Viewing 5 replies - 1 through 5 (of 5 total)
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  • #53970

    Robert Vetrano
    Participant
    Vessel Name: Knot Flying
    Engines: qsb 5.9
    Location: Merritt Island FL
    Country: USA

    Can do! Thanks Tony!

    #53968

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Don’t even think twice about any type of extended low speed running running with this engine.. Do what needs to be done and at the end of the the “job”, find a window of weather and space to run at cruise speeds for 5-30 minutes and then , worry not………………….If you can work in a WOT run for a 30 seconds to a minute or so, all the better..

    Tony

    1 user thanked author for this post.
    #53793

    Robert Vetrano
    Participant
    Vessel Name: Knot Flying
    Engines: qsb 5.9
    Location: Merritt Island FL
    Country: USA

    I’ll have to go do a test run and see just exactly what rpm/load that is. I’m pretty sure it’s faster than what these guys can paddle at.

    #53787

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    You should have enough load on her to keep her at thermostat opening temperature.

    #53722

    Mike Mason
    Participant
    Engines: Qsb 5.9 380
    Location: San Diego
    Country: Us

    No problem. When your done run her up to speed and blow out the turbos.

    1 user thanked author for this post.
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