GX270 powered bathtub race boat.

Discussion in 'Surface Drives' started by Agrodyne labs, Nov 29, 2014.

  1. whitepointer23

    whitepointer23 Previous Member

    I was thinking of the way they used to race them here. Yours looks like more fun though.
     
  2. Agrodyne labs
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    Agrodyne labs Junior Member

    Total weight = 53 LBS, 113 1/2 inches long. Stiff like a board.
     
  3. Agrodyne labs
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    Agrodyne labs Junior Member

    GX-1 Race boat completed.

    Just want to post that our new design hit the water a few days ago.
    It handles very well, is quick for the first trial, stable, and just plain awesome.
     

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  4. Agrodyne labs
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    Agrodyne labs Junior Member

    One more.....

    Picture of steering setup and clutch...
     

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  5. Agrodyne labs
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    Agrodyne labs Junior Member

    Race complete!

    Lots of setup to do for next year's race....Barely got her race ready in time.

    But....I'm so happy with the way she ran. This will be a race winner I predict.
     

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  6. Agrodyne labs
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    Agrodyne labs Junior Member

    GX 270 in action on race day...

    She rides like a dream!
     

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  7. Agrodyne labs
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    Agrodyne labs Junior Member

  8. Agrodyne labs
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    Agrodyne labs Junior Member

  9. Agrodyne labs
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    Agrodyne labs Junior Member

  10. blisspacket
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    blisspacket Junior Member

    GREAT entertainment! WONDERFUL roostertail. A kick in the pants overall. Thank you.
     
  11. blisspacket
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    blisspacket Junior Member

    Forgot: Huge applause to the engineers, builders. INSPIRATIONAL!!!
     
  12. Agrodyne labs
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    Agrodyne labs Junior Member

    That vid is before ANY engine Mods...so 8.5HP at engine output shaft. A modded GX270 is capable of 12-20HP without blowing up. Also running a pretty tame prop in the vid. During the race I was blasting a 25-30' rooster! 3x the length of the boat! Thanks for the prop's , my team and I worked very hard to get her ready for the Nanaimo world championship bathtub race!
     
  13. Agrodyne labs
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    Agrodyne labs Junior Member

    A close up of the bits....

    These pics shows a bit of the surface drive and steering setup....started with this..
     

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  14. Agrodyne labs
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    Agrodyne labs Junior Member

    Video of drive bits...

    This short video shows some of the detail's that make up the drive and steering.

    https://www.youtube.com/watch?v=I9lpI58AF9o

    A bunch of welding and grinding made the steering mount / "Skeg" unit..it just sleeves onto the shaft tube , clamped by 4 allen head s.s screws , so it can be moved to alternate positions if required. We were not sure how low speed handling would be, so made all that stuff adjustable / replaceable. But turns out it handles great at low speeds with lots of rudder in the water , and as it comes up on step
     

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