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  1. #1
    crispyspa's Avatar
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    SI 1/4 scale 3 pt hydro electric conversion.

    Well, I made the decision to convert this boat to brushless Lipo electric power.



    The Super Tigre g2300 mk2 came off as well as the radio box and fuel tank (obviously). I mocked up the placement of the electric components and was not happy with it because the center of balance was way off due to the weight of the Lipo batteries.
    I had to reluctantly cut holes into the tub to be able to slide the batteries back enough to move the CB. I'll make trays to slide the batteries into so they don't slop around in the hull.
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    After all is said and done, more is said than done.

  2. #2
    1QwkSport2.5r's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    I can smell the burning electrons already... . Looking good so far!
    GlowHead Brotherhood #3
    Happily running Dynamite, Enya, Fox, Jett, K&B, SH, Super Tigre, Thunder Tiger, Traxxas.
    I will trade my OS .10FP for an Enya or..?

  3. #3

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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    HOw about a few specs... motor kv prop size
    Jim

  4. #4
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    OH yeah, that would be helpful.

    The motor is a Turnigy 160. 290kv 10 cell capable.
    Esc is a Hobbywing boat 80 amp high voltage water cooled. And the batteries are the turnigy nanotech 65-130c 5000mah 5 cell.

    Motor, batteries and the ESC

    I'll try a 16x10 APC prop first.
    After all is said and done, more is said than done.

  5. #5
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Did more work the past few days. I got the battery trays done and installed, made the long, bent, radio box cover and sealed most everything so far with thinned epoxy. I'll be working on the wiring and ESC cooling very soon....Must think of the shortest route for the wires without getting in the way of the swinging prop.

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    After all is said and done, more is said than done.

  6. #6
    1QwkSport2.5r's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Crispy - no worky on the latest pics. Thumbnails aren't showing up and clicking them just gives "Loading..." ... I wanna see!
    GlowHead Brotherhood #3
    Happily running Dynamite, Enya, Fox, Jett, K&B, SH, Super Tigre, Thunder Tiger, Traxxas.
    I will trade my OS .10FP for an Enya or..?

  7. #7
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.


    ORIGINAL: 1QwkSport2.5r

    Crispy - no worky on the latest pics. Thumbnails aren't showing up and clicking them just gives ''Loading...'' ... I wanna see!
    Are they working for you now? They show up in my browser. [&:]

    I haven't done a water test yet, but I do have a video. The set up seems to work great.
    At full throttle (static) 2300 watts (3 hp), 9200 rpm and pulling 65 amps. Motor timing set to 0%
    http://youtu.be/OY3l66-kV2Y

    I needed a way to protect the motor wires and the cooling tube from the prop so I made a removable cover plate.
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    After all is said and done, more is said than done.

  8. #8

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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Pardon for butting in!! Now are you the gentleman who built the blue airboat and had a video of it running on the snow by your house? I admired it for ages but went a more simple route of building a airboat. I wanted a fancier airboat like your blue one. Cajun of Libera,Miss. helped me on my simple airboat till his site went down. He was a real nice gent too. Have a good day! I see he posted here of late. BTW, your present airboat looks great.

  9. #9
    1QwkSport2.5r's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Working now, yes. Impressive indeed! Flies go splat in the prop arc! =D

    Now lets see a lake run! [8D]
    GlowHead Brotherhood #3
    Happily running Dynamite, Enya, Fox, Jett, K&B, SH, Super Tigre, Thunder Tiger, Traxxas.
    I will trade my OS .10FP for an Enya or..?

  10. #10
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.


    ORIGINAL: Mikeup

    Pardon for butting in!! Now are you the gentleman who built the blue airboat and had a video of it running on the snow by your house? I admired it for ages but went a more simple route of building a airboat. I wanted a fancier airboat like your blue one. Cajun of Libera,Miss. helped me on my simple airboat till his site went down. He was a real nice gent too. Have a good day! I see he posted here of late. BTW, your present airboat looks great.
    Thanks Mike.
    Not at all, butting in is accepted here. I don't recall building a blue airboat, silver, black and natural wood are all that comes to mind. The only blue one I built was a 3 pointer that never saw snow. I can't even think of the one to which you refer, or who owns a blue one. [&:]
    After all is said and done, more is said than done.

  11. #11
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    I tore it all apart, sanded the top of the hull and sprayed a fresh coat of epoxy on. Assembled this morning and I have no clue when the maiden voyage will be. I need to find a camera man to take a proper video.

    The weight is a tad out of control at 17Lb 7oz but that's only a pound more than the Zenoah powered gas version without fuel, so I should be ok.
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    After all is said and done, more is said than done.

  12. #12
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Well, here is the first electric run....

    http://youtu.be/vWvSbMsgntQ
    After all is said and done, more is said than done.

  13. #13

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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Excellent work Crispyspa! I bet with less wind and calmer waters that electric conversion will be a lot faster. Your conditions on the video did not look to be too good. Put up a video when you have a calm day and I bet you will have an ear to ear grin. Dennis

  14. #14
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Thanks DJ. Yeah, the wind wouldn't let up and the chop was horrible. A storm blew in and I got soaked from a short, hard rain. I had all my stuff out on the tailgate. Radios, charger, tool box, batteries....all got a little wet. My buddy high tailed it to his truck so he stayed dry. Good times, good times. LOL
    After all is said and done, more is said than done.

  15. #15
    1QwkSport2.5r's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Although sad to see the internal combustion engine go, it still looks good on the water, and I'm sure more speed will be had on calmer waters.

    Do we have to plan another meet?!?
    GlowHead Brotherhood #3
    Happily running Dynamite, Enya, Fox, Jett, K&B, SH, Super Tigre, Thunder Tiger, Traxxas.
    I will trade my OS .10FP for an Enya or..?

  16. #16
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.


    ORIGINAL: 1QwkSport2.5r


    Do we have to plan another meet?!?
    I was thinking about that. There is a place on the west side of Rochester called Whistle Binkies on the lake. They have a nice pond. I was wondering it they'd let us run there. Nice central location and we'd have a place to eat when we get hungry.

    Whistle Binkies on the lake
    After all is said and done, more is said than done.

  17. #17
    1QwkSport2.5r's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Sounds fine by me. My wife owes me a few personal days off anyway. I don't think I want to haul the canoe that far though... Got an idea for retrieval?

    I wonder if the pond is weedy... Have you been to that place and seen the pond semi-up-close?
    GlowHead Brotherhood #3
    Happily running Dynamite, Enya, Fox, Jett, K&B, SH, Super Tigre, Thunder Tiger, Traxxas.
    I will trade my OS .10FP for an Enya or..?

  18. #18
    crispyspa's Avatar
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    RE: SI 1/4 scale 3 pt hydro electric conversion.

    Drove by it a lot during my sickness and trips to mayo. Seems to be almost weed free.
    After all is said and done, more is said than done.


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