[python] Re: AW: Re: Python waterbike? / Hydro Foil Python.
- From: UH-13P <uh13p@xxxxxxxxx>
- To: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
- Date: Sat, 6 Aug 2011 09:17:25 -0700 (PDT)
Hi,
I'm new to the list today and a hydrofoil wasn't my interest in joining but
here are some other attempts that may prove relevent to a foil python.
http://www.youtube.com/watch?v=96J_R7lcCvw&NR=1
http://www.youtube.com/watch?v=PBHCExUvqgQ&feature=related
From: Gerald <bepb@xxxxxx>
To: python@xxxxxxxxxxxxx
Sent: Saturday, August 6, 2011 6:13 AM
Subject: [python] Re: AW: Re: Python waterbike? / Hydro Foil Python.
Hi,
but it seems possible to power a hydofoil just with human power, just as an
expample, an hydrofoil kajak: http://www.youtube.com/watch?v=S5Nb3iGdTEM.
If we assume that the power output of the legs is more than you could do just
with the upper torso and arms, powering a hydrofoil by pedaling should be
possible.
Now the feat would be to have a python that is good in both, running on land
with wheels and running on water with hydrofoils.
Up to know I have given this concept just a cursory glance.
But I think that, If one would want to go forward with the idea, the following
points should be considered:
*In practice only the hydrofoils will not be enough to go on water. You will
need buoyancy to keep you above water if you stop pedaling. I would assume
about 130 liters of buoyancy at a minimum.
*You need a proposition system more efficient than just the front wheel
wheeling through the water.
*You need to consider stability, both in motion and in standstill. You will
have to balance the bike on water because you wont be able to support it with
you hand.
*The compromises required for buoyancy and proposition bear great risk of
making the bike both, poor on land and poor on water.
Since the next suitable lake is some 40 km form where I live, and considering
that going around it with the normal python is most probable still a lot faster
than going through with some kind of water bike, I think my python will stay
land bound for know :-).
Gerald
On 5.8.11 17:08 , pybuen@xxxxxxxxx wrote:
> Hi Vi,
>
> The Hydrofoil motorbike already exists:
>
> http://www.youtube.com/watch?v=wObflyTPLvM&playnext=1&list=PL729F9C5AE2D4C44E
>
> It seems to be using the same balancing principle as a bike to turn - another
> confirmation that gyroscopic effects are unimportant...
>
> You'd have to go pretty fast (or burn many calories) to make a waterpython
> version of this indeed... I look forward to it ;)
>
> Pascal
>
>
> On Fri, 5 Aug 2011, Gerald wrote:
>
>> Hi Vi,
>> nice picture, may be possible with the python too. The question is, if
>> weight so high above the driver would not make the python unrideable.
>>
>> But maybe it is possible to put hydro foils on the python. One pair right
>> and left off the front wheel, an other pair left and right off the rear
>> wheel.
>> Maybe the foils could be made to fold away for land usage.
>>
>> But wait - if you can't put enough power to the bike or stop peadaling you
>> will sink fast - very fast.
>> Getting startet will be difficult too.
>>
>> Gerald
>>
>>
>>
>> -----Ursprüngliche Nachricht-----
>> Von: Vi Vuong <vi_vuong@xxxxxxxxx>
>> An: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
>> Gesendet: Fr., 05. Aug 2011, 05:39:01 GMT+00:00
>> Betreff: [python] Re: Python waterbike?
>>
>>
>>
>> How about having the bike carries the board overhead on land, and vice versa
>> on water? Need friction rollers to transfer power to water, must rotate
>> with wheel to steer
>> http://media.photobucket.com/image/surfbike/quiveyman/bikeshots008.jpg
>>
>>
>>
>>> ________________________________
>>> From: Steffen <big.skangster@xxxxxxxxxxxxxx>
>>> To: python@xxxxxxxxxxxxx
>>> Sent: Friday, July 29, 2011 1:08 AM
>>> Subject: [python] Re: Python waterbike?
>>>
>>>
>>> I saw years ago on a fair the lifesize-modell of a students work which used
>>> a flevo as the skelett for a folding kayak. I had the websides but the
>>> project stagnated. The modeel was only foam but the ideas he had where
>>> great. He swing the suspension part to the front to make it longer and
>>> wanted to swing both crank levers to the front where he attached the lines
>>> for the steering. The not so nice part was that it was made to use paddles
>>> and driven with the legs. The hull was a a big package on the bicycle rack.
>>>
>>> Chears,
>>> Steffen
>>>
>>>
>>> Am 28.07.2011 22:11, schrieb Vi Vuong: Some help already
>>>> http://gizmodo.com/5825618/a-canoe-that-can-fit-inside-a-backpack
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> ________________________________
>>>>> From: Vi Vuong <vi_vuong@xxxxxxxxx>
>>>>> To: "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx>
>>>>> Sent: Wednesday, July 27, 2011 9:27 AM
>>>>> Subject: [python] Re: Python waterbike?
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> SF bay is too big to cover with an amphibious recumbent, but it would be
>>>>> really nice for a smaller lake not so far away. For now, I am thinking
>>>>> of something compact & modular that can be transported inside a small
>>>>> car. However, it all depends on what I can recycle - surf board, kayak,
>>>>> fins, propeller, etc ... so it will take a while to collect.
>>>>>
>>>>>
>>>>> Vi
>>>>>
>>>>>
>>>>>
>>>>>> ________________________________
>>>>>> From: Jürgen Mages <jmages@xxxxxx>
>>>>>> To: python@xxxxxxxxxxxxx
>>>>>> Sent: Wednesday, July 27, 2011 12:41 AM
>>>>>> Subject: [python] Re: Python waterbike?
>>>>>>
>>>>>> I once thought of building an amphibuous
>> python - But I reckon you'll be the first to
>> realise this ...
>>>>>>
>>>>>> Jürgen.
>>>>>>
>>>>>> On 26.07.2011 23:48, Vi Vuong wrote:
>>>>>>> Has anyone wondered about a python for
>> water/fishing?
>>>>>>>
>>>>>>>
>>>>>>> S1waterbike hands-free steering
>>>>>>> http://www.youtube.com/watch?v=mF5TN9hlT1M
>>>>>>
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>>>>>>
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>>>>>>
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>>>>>>
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>>>>>>
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>>>>>> ============================================================
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>
>>>
>>>
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