Diesel outboard

Discussion in 'Outboards' started by Hastings Harry, Apr 23, 2014.

  1. Hastings Harry
    Joined: Apr 2014
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    Location: Hastings Australia

    Hastings Harry Junior Member

    Hi All.

    I'm about to bolt a 40 Hp Chinese Runsun diesel outboard to my old fibreglass 1976 17 ft Pride Explorer. As you can already see I don't do anything normal. The boat is just getting a lick of paint and a tidy up and we shall see how the diesel goes. It is replacing an old two smoke Johnson 55 Hp seahorse and I'm praying that it pulls a skier. I've got two young skiers as sons and the boat runs all day costing me a fortune. Supposedly this motor does 3 litres per hour at full noise. Awesome if true, eh? I'll let you know how it goes.

    Cheers Phil
     
  2. Mr Efficiency
    Joined: Oct 2010
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    Location: Australia

    Mr Efficiency Senior Member

    That's interesting Harry. What did it cost you, and who is selling them ?
     
  3. powerabout
    Joined: Nov 2007
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    Location: Melbourne/Singapore/Italy

    powerabout Senior Member

    It might not go fast enough to ski with?
    Have you run it yet
     
  4. Squidly-Diddly
    Joined: Sep 2007
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    Location: SF bay

    Squidly-Diddly Senior Member

    I saw a teenager get pulled up to water ski behind one of these rental pontoon boats at Lake Del Val in CA....with canopy and everything, and just one guy in the boat. Top speed on lake is 10mph, and I'm guessing these RENTAL boats will not go much over that.

    Only been waterskiiing once, but IIRC both size of ski/board and weight are major factors.

    My guess is you will be able to do everything but 'bare foot', no problems.


    Good luck with Chinese engines. I hear their small scooters aren't worth hassle of buying, even for one summer.

    next previous
    [​IMG]
     
  5. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Most OB run 5500rpm with a cruise about 4000-4500.

    Many diesels will only do 2100-2800 rpm, tho car transplants might work.

    Not sure a prop change would get you fast enough?
     
  6. powerabout
    Joined: Nov 2007
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    powerabout Senior Member

    Thats the catch, no gears and a very small rev range
     
  7. rustybarge
    Joined: Oct 2013
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    Location: Ireland

    rustybarge Cheetah 25' Powercat.

    Please post some photo's!

    I looked at a Yanmar diesel OB, there's a company in Scotland who rebuild them for commercial use around the oil industry.

    The small one, about 28hp i think cost £12k plus 20% vat.......yes that is not a typo!

    Do you have a link for your Chinese manufacturer?
     
  8. cluttonfred
    Joined: Mar 2014
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    Location: United States

    cluttonfred Junior Member

    Here's a link to the outboard motor page on the company's site:

    http://www.runsungroup.com/bbx/712870-712870.html?pgid=219277

    And a video of one of the motors in use:



    I wonder, though, if it's even legal to use these engines in Europe or North America because of the lack of environmental certification.
     
    1 person likes this.
  9. rustybarge
    Joined: Oct 2013
    Posts: 533
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    Location: Ireland

    rustybarge Cheetah 25' Powercat.


    Interesting: Air and water cooling???????
    Very light at 120kg, same as 60hp petrol/gas OB>
    Full revs sounds like 2500, not 4500 revs as stated.

    ................................................................................

    Diesel Outboard Motor:
    1. Compact structure, patented design
    2. CE & ISO9001-2000 approved
    3. Excellent performance and economy
    4. Low noise and low vibration design.
    5. Excellent cooling system

    MODELS DOM40H
    Max. output 40hp
    Full Throltle Operating Range 4500~5500rpm
    stroke 4
    Cylinder 2
    Displacement 1.1L
    Bore*Strock 82*79 mm
    Compression Ratio 19:01
    Length*Width*Height 1100*450*1450mm
    Weight 120kg
    Gear Ratio 2(26:13)
    Gear Shiff Position F-N-R
    Cooling System Air&Water-cooling
    Starting System Electric system
    Control System Till control
    Fuel Diesel
    Recommended Gear Oil Hypoid gear oil-SAE#90
    Recommended Propeller 3*12-1/4"4*8"~3*11-1/4"*14"
     
  10. Hastings Harry
    Joined: Apr 2014
    Posts: 26
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    Location: Hastings Australia

    Hastings Harry Junior Member

    Mine cost about 8k by the time it landed at Hastings. I'd never bought an outboard before but liked the idea of diesel. so mine has a 16" leg. be interesting to see if the motor gets swamped because it is so low.
    www.dieseloutboardsvictoria.com are the local agents for the Runsun brand, dunno about others. mine is a runsun by the way.

    1st coat of undercoat on the hull tonite. wow. different boat.
     
  11. Hastings Harry
    Joined: Apr 2014
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    Location: Hastings Australia

    Hastings Harry Junior Member

    when I enquired the yanmar 36 Hp was costing $25000 AUD plus freight from UK.
    Mine was 8k. it's Chinese so needed a little love before I was happy but I am still so far in front.
     
  12. Hastings Harry
    Joined: Apr 2014
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    Location: Hastings Australia

    Hastings Harry Junior Member

    Thats my motor and no it's brand new, i'll wait a little before full steam
     
  13. Hastings Harry
    Joined: Apr 2014
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    Location: Hastings Australia

    Hastings Harry Junior Member

    what do you mean no gears? :)

    if you watch the video I put it in gear almost immediately after I start the motor. that was the first run of my brand new motor so I didn't feel like giving it everything just yet. Sorry.
     
  14. rustybarge
    Joined: Oct 2013
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    Location: Ireland

    rustybarge Cheetah 25' Powercat.

    Apologies, I thought the video was a factory demo of the engine!:D
     

  15. Hastings Harry
    Joined: Apr 2014
    Posts: 26
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    Location: Hastings Australia

    Hastings Harry Junior Member

    I hear you grasshopper. I have a chinese whipper snipper 7 years old now. My 4 year old chinese lawn mower can be started by my wife:) unlike the briggs and stratton. they were my major influences. And how many of you have maxus, sail, dolphin, or the other brand chinese petrol outboards. do you have stupid problems with them or just the usual outboard hassles?

    Chinese scooters- my son took 3 months to bend the motor mount so it throws the chain. had a lot of fun in the meantime.
     
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