amphibian

Discussion in 'Boat Design' started by richard gray, Oct 5, 2013.

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  1. richard gray
    Joined: Mar 2013
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    richard gray Junior Member

    hello; i have not given up on an amphibious vehicle . need input on using a dana 20 transfer case in reverse mode to power jet drive and differential. a dana 18 seems to work , but dana 20 not so much?
     

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  2. rwatson
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    rwatson Senior Member

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  3. tom kane
    Joined: Nov 2003
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    Location: Hamilton.New Zealand.

    tom kane Senior Member

    There must be millions of these craft built. I had fun with this conversion.
     

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  4. El_Guero

    El_Guero Previous Member

  5. asmith
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    asmith New Member

  6. El_Guero

    El_Guero Previous Member

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  7. asmith
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    asmith New Member

    Why buy an Iguana when you can have a...swan?
     
  8. Squidly-Diddly
    Joined: Sep 2007
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    Squidly-Diddly Senior Member

    Tom Kane, could you give me any info on that 'conversion'? Are the wheels powered and by what?

    You said 'millions'? What are they called? Link?
     
  9. jonr
    Joined: Sep 2008
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    jonr Senior Member

    I'd love to have a boat with powered wheels that could be raised when on the water (like a more affordable Sealegs). I'd be less excited about dragging wheels through the water or something that I had to push or pull when on land.
     
  10. tom kane
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    tom kane Senior Member

    Why bother to raise the wheels when you can aquaplane on them and they give extra stability to a small boat and give flotation and saves a lot of expense and weight.
     
  11. rwatson
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    rwatson Senior Member

    The thing about the Iguana, when I researched 'plastic' treads like the ones used on traxcavators, I was told that immersion in seawater would ruin them very quickly. I suspect that normal tyres would suffer the same problem, which would make the vehicle unroadworthy quickly.

    I wonder what the Iguana is using for its tracks ?
     
  12. El_Guero

    El_Guero Previous Member

    Salt water might damage tires more quickly ....

    But, it is metal that you have to worry about. I grew up on (by) the ocean, everyone was concerned with cars rusting, never about tires (tyres) going bad quickly.

    I think the tracks must not be built to handle salt water.

    Don't you?

    And you must have the seals for your bearing SEALED tight. But, that is really for any water.
     
  13. tom kane
    Joined: Nov 2003
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    tom kane Senior Member

    I was referring to the millions of attempts to build an amphibian craft
    that is practical and cheap and free from constant maintenance.
    Quad bike parts and early "gnat" farm vehicle parts abound now.
    My attempt was to try the concept for low cost. A 25 Johnson o/b (for light weight)fluid cooled to drive rear wheels with wide tires to aquaplane on instead of the weight and cost of raising the wheels.
    A trailer hitch to tow the boat on the roads and very wide tires. I did not want to ruin the boat so it had to be able to return it back to original.
     
    Last edited: Oct 8, 2013
  14. Squidly-Diddly
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    Squidly-Diddly Senior Member

    Now I'm thinking that TV Show dude needs to refocus slightly and do a showed called.....


    "Amphibian Evolution", and basic premise would be new amphib designs. The whole 'land vs water' design conflict would guarantee lots of conflict and 'drama'.

    I think that would be better(and bit more challenging) than some re-tread of http://en.wikipedia.org/wiki/American_Chopper, which was just slapping different colors of lipstick(mostly corp brand themes) on basically the same type of bike, without any regard to real design.

    I've always wanted to explore 80%water/20%land large civilian amphib.

    Something in the Max Road Size with tires and suspension that might take 5 minutes to deploy and might only be able to do 55mph on flat hwy and not 'handle well' on roads by any means, but would still be a decent boat, and a truly 'boat based' design, not a motor-coach with extra caulking (either cabin cruiser or motor sailer)
     

  15. rwatson
    Joined: Aug 2007
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    rwatson Senior Member

    I hope all this palaver has helped you out with your design problem Richard :p
     
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