I like the "slithering" one. Waht do you think about using the fin ray effect, like the Festo Airacuda and the Air Jelly use it?
http://www.youtube.com/watch?v=N-O8-N71Qcw http://www.youtube.com/watch?v=TKeVVKGEDLcDoes someone where I can get some cheap pontoons like the one they used for the Akwabat?
http://www.akwakat.co.nz/ Regards, Steffen Am 06.08.2011 21:48, schrieb Vi Vuong:
I hope land-bound pythonauts don't mind the water diversion, and only plan to "swim" in calm water at a slower speed than on "slithering" on land, more like this one fish vehicle, http://www.youtube.com/watch?v=iIdR0YsqYkcHowever, if speed is desired, there is also plenty of wind power to pull hydrofoil, like this one in Maui http://www.youtube.com/watch?v=1oyWMusaDTI. The foil kayak pointed out is also a great achievement with arm power. The legs have much more power than arms, if we can find a way to apply it...For long distance, Greg probably has gone far... ( http://adventuresofgreg.com <http://adventuresofgreg.com/>)Vi ------------------------------------------------------------------------ *From:* UH-13P <uh13p@xxxxxxxxx> *To:* "python@xxxxxxxxxxxxx" <python@xxxxxxxxxxxxx> *Sent:* Saturday, August 6, 2011 9:17 AM *Subject:* [python] Re: AW: Re: Python waterbike? / Hydro Foil Python. 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=96J_R7lcCvw&NR=1> http://www.youtube.com/watch?v=PBHCExUvqgQ&feature=related <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 <mailto:pybuen@xxxxxxxxx> wrote: > Hi Vi, > > The Hydrofoil motorbike already exists: > > http://www.youtube.com/watch?v=wObflyTPLvM&playnext=1&list=PL729F9C5AE2D4C44E <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 <mailto:vi_vuong@xxxxxxxxx>> >> An: "python@xxxxxxxxxxxxx <mailto:python@xxxxxxxxxxxxx>" <python@xxxxxxxxxxxxx <mailto: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 <mailto:big.skangster@xxxxxxxxxxxxxx>> >>> To: python@xxxxxxxxxxxxx <mailto: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 <mailto:vi_vuong@xxxxxxxxx>> >>>>> To: "python@xxxxxxxxxxxxx <mailto:python@xxxxxxxxxxxxx>" <python@xxxxxxxxxxxxx <mailto: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 <mailto:jmages@xxxxxx>> >>>>>> To: python@xxxxxxxxxxxxx <mailto: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 >>>>>> >>>>>> ============================================================ >>>>>> >>>>>> This is the Python Mailinglist >>>>>> >>>>>> //www.freelists.org/list/python >>>>>> >>>>>> Listmaster: Jürgen Mages jmages@xxxxxx <mailto:jmages@xxxxxx> >>>>>> >>>>>> To unsubscribe send an empty mail to python-request@xxxxxxxxxxxxx <mailto:python-request@xxxxxxxxxxxxx> >>>>>> with 'unsubscribe' in the subject field. >>>>>> >>>>>> ============================================================ >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>> >>> >>> ============================================================ This is the Python Mailinglist //www.freelists.org/list/python Listmaster: Jürgen Mages jmages@xxxxxx <mailto:jmages@xxxxxx> To unsubscribe send an empty mail to python-request@xxxxxxxxxxxxx <mailto:python-request@xxxxxxxxxxxxx> with 'unsubscribe' in the subject field. ============================================================
