Electric outboard drive for small cruisers

  • 13 May 2023 10:45
    Reply # 13201037 on 8809939

    Photos of the outboard.

    /outboard%20photos

    I've requested more info from her.

  • 01 May 2023 23:58
    Reply # 13187279 on 8809939
    Anonymous member (Administrator)

    Any chance of a link to her FB page?

    Here's a link to one of her posts. Its on the fb group "Dinghy Cruising NZ" . You'll just have to scroll back through them to find her other posts, I don't know how to navigate fb - its a dog's breakfast to me.


  • 01 May 2023 22:40
    Reply # 13187153 on 13185425

    Any chance of a link to her FB page?

    Anonymous wrote:

    You lose a bit with that flexible shaft and casing, due to lots of friction.

    Instead, I would use the bottom half of a straight shaft line trimmer, and put a drill on that.


    And while we are on the subject of marinising gardening tools, I have been following with great interest, on Facebook, the exploits of a most innovative kiwi who designed and built her own boat (including the design and making of the sail) all from cheap locally available materials, including grafting a lawn mower engine onto a clapped outboard motor bottom end. Quick build too,  Its not the first time she's done it.

    The lawn mower gives a speed of 5 knots.



  • 30 Apr 2023 09:22
    Reply # 13185425 on 8809939
    Anonymous member (Administrator)

    You lose a bit with that flexible shaft and casing, due to lots of friction.

    Instead, I would use the bottom half of a straight shaft line trimmer, and put a drill on that.


    And while we are on the subject of marinising gardening tools, I have been following with great interest, on Facebook, the exploits of a most innovative kiwi who designed and built her own boat (including the design and making of the sail) all from cheap locally available materials, including grafting a lawn mower engine onto a clapped outboard motor bottom end. Quick build too,  Its not the first time she's done it.

    The lawn mower gives a speed of 5 knots.


    Last modified: 30 Apr 2023 11:32 | Anonymous member (Administrator)
  • 30 Apr 2023 06:19
    Reply # 13185355 on 8809939

    What about hooking a cordless drill to one of these?

    1 file
  • 24 Nov 2022 11:31
    Reply # 13000796 on 8809939
    Anonymous member (Administrator)

    Seriously, what about those with disabilities for whom rowing or paddling are difficult? 

    In that case I'd take the trouble to make a decent mounting bracket which holds the shaft in place and allows easy one-handed steering. I'll bet you could come up with a way of doing that better than anyone. Steering seems to be a bit of an issue with the longtail configuration, although for a kayak maybe that is still the most practical configuration. For a small dinghy, I think a "L" configuration (like a conventional outboard) would be better, and I'd make one from a broken line trimmer, get rid of the non-functioning motor and apply a cordless drill to the input shaft - there is something rather fun about the idea of re-purposing something as ubiquitous as a cordless drill isn't there? And we are only talking about a bit of fun aren't we? Just bring along a spare battery.


    (Robb White Jnr reckoned the best invention of the 20th century was the white plastic bucket. I reckon the cordless drill driver comes a close second).

    (That's Robb White the boat builder. "Flotsam and Jetsam" his short stories compiled posthumously by his sister. A great read.)

    Last modified: 27 Nov 2022 00:02 | Anonymous member (Administrator)
  • 24 Nov 2022 09:21
    Reply # 13000700 on 8809939

    David Th: If there's one tool that a serious cruising boat should carry aboard, it's a cordless drill! Not just for holes; it can multitask:

    Turn your handheld drill into an electric winch handle

    That's not all that people have dreamed up either. Enter the phrase 'cordless drill powered' into your search engine, and see how many variations on a theme there are.

    Seriously, what about those with disabilities for whom rowing or paddling are difficult?  I'm no longer fit enough to paddle my kayak to the top of the river and back, if there's a breeze. Put it down to old age and parkinsonism.

    Graeme: Nothing very fancy in the way of engineering, just an oversized hole in a piece of low friction plastic ought to do it. [thinks: how would I make a hole? oh, I know, I have a cordless drill aboard!]. But other options are available: 

    https://www.youtube.com/results?search_query=cordless+drill+powered+trolling+motor

  • 24 Nov 2022 05:08
    Reply # 13000592 on 8809939
    Anonymous member (Administrator)

    Turns out the idea has been around for a while.

    The mad Brits used to have a "Makita 600 Cordless Challenge" at the Beale Park Boat Show.

    A 600m sprint attracting tri hulls, cats as well as monohulls, with multi-engine installations. Inboards, outboards and even paddle wheels - not to mention of course, the inevitable eccentric in a twin-engine cordless drill-powered floating motorbike side car.


    You can probably guess the prize

    https://www.youtube.com/watch?v=rVrmhoHepmk


    (David T I don't know if you are serious, but I can't see the need for any fancy engineering. If there is somewhere on the back of an inflatable to lash to, I would have thought a loose lashing around the rotating shaft would do well enough, of that cheap slippery rope (I forget what its called), you hold the drill in your hand of course. Quick to dismantle should you find you suddenly need to do some home handyman work on your boat. And as for water-proofing - same as for any outboard I suppose - just try not to drop it in the tide.

    David Th (very serious) - Ah! But you can't drill a hole in something with a pair of oars can you? Eh? I agree, the last thing we need on a junk is "needless junk", but I reckon in a flat calm one of those little Kohler catamarans should go like a rocket with a couple of 18V Ryobis on the back! (One in reverse of course - counter rotating props LH RH))



    Last modified: 24 Nov 2022 11:55 | Anonymous member (Administrator)
  • 23 Nov 2022 18:45
    Reply # 13000055 on 8809939
    Deleted user

    Whilst I applaud innovation and finding new ways of doing things I cannot help but feel that such a device is just needless junk on a small boat, and I expect that with any real load such a small battery will not last very long. I enjoy the simplicity of rowing, and enjoy the exercise gained from rowing. This contraption will maybe last for a little while, but will eventually end up in a landfill. A pair of wooden oars however can last for decades, and when they do eventually break, or wear out, the remains can at least be chopped up for firewood and used to keep someone warm in the winter.

    I am for keeping boating simple and wholesome.

  • 23 Nov 2022 10:00
    Reply # 12999551 on 8809939

    H'mm. Interesting. I don't know whether this comes from the same supplier, but clearly someone, somewhere in China, is giving the matter some thought. 

    I see that a 21V drill with two 2Ah batteries can be had for less than £40 in the UK. Still needs some engineering to mount it on a kayak, though ... and what about weatherproofing?

       " ...there is nothing - absolutely nothing - half so much worth doing as simply messing about in junk-rigged boats" 
                                                               - the Chinese Water Rat

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