[python] Re: Pendulum effects
- From: Vi Vuong <vi_vuong@xxxxxxxxx>
- To: Python <python@xxxxxxxxxxxxx>
- Date: Fri, 11 Mar 2011 23:09:31 -0800 (PST)
Yes, there is some sort of entanglement alright, that might amuse Einstein and
his co-pilot while working on quantum in the 30's. The frame does move
slightly
side to side, transferring energy from one wheel to another, so technically the
vehicle is a coupled pendulum, but to the untrained eyes it may appear as
though the wheels have their own repelling and attracting forces :)
So replacing the word quantum with [python], we have
[Python] entanglement is a property of the [python] mechanical state of a
system
containing two or more objects, where the objects that make up the system are
linked in such a way that the [python] state of any of them cannot be
adequately
described without full mention of the others, even if the individual objects
are spatially separated.
http://en.wikipedia.org/wiki/Quantum_entanglement
Kurt, smaller wheels are more susceptible to small bumps, but so far have not
been an issue. Here is a video of my 20in FWD lowracer offroad, going over
both
big pot holes and small bumps http://www.youtube.com/watch?v=0Jq7xX5ASFw.
Unfortunately I have not ridden my 20in python enough to tell, but probably
more drama from bumps...
While the quad is for carrying big load, it is also very stable, so a tadpole
may be enough with longer wheelbase perhaps for a small passenger in the back
like the Pythoon, perfect for a young family. A third rider in the back is
also
a possibility.
Jürgen, the Wiki is really nice to work with. How about moving some of the
python-lowracer contents over that are still evolving, like the survey?
Vi
________________________________
From: Kurt Rutter <tokabago@xxxxxxxxx>
To: python@xxxxxxxxxxxxx
Sent: Fri, March 11, 2011 9:57:42 AM
Subject: [python] Re: Pendulum effects
How do you weld a quantum entanglement? I have been entangled in my wirefeed,
it
was not pretty.
The 20 inch front wheel design is very good looking, so compact. How does it
cope with paved but bumpy streets?
Also, Vi's design might be interesting as a tadpole trike. Oh no, another
project. ;=/
Kurt
2011/3/10 Jürgen Mages <jmages@xxxxxx>
Hi Vi,
>
>the video is funny indeed - maybe you just discovered quantum entanglement in
>macroscopic dimensions.
>
>Great, that you setup a wiki page about your project.
>
>Cheers,
>Jürgen.
>
>
>On 10.03.2011 06:24, Vi Vuong wrote:
>
>Hi All,
>>
>>We have been turning the Bango quad with mostly the outer wheel, because the
>>inner wheel only needs much less turning to minimize tire scrubbing. This
>>figure depicts the shallow angle compared to the Ackerman angle, which is
>>harder
>>to achieve with center steering.
>>http://en.openbike.org/wiki/File:Bango_steering.png
>>
>>After some calculation, it seems that the shallow is possible due to the
>>pendulum effect causing the wheels to go up & down. As we lean into the
>>corner,
>>the inner wheel must be higher than outer wheels via smaller angle. Wheel
>>tilt
>>angle may also play a role and asymmetry is also suspect, but the behavior is
>>almost the same in either direction.
>>We made some attempts to achieve Ackerman angles but it's hard to eyeball.
>>We
>>did notice the outer wheel skid along, as if it barely touch the ground. We
>>need to figure out a way to measure the steering angles and tire scrubbing
>>sound
>>simultaneously for more system dynamics analysis. Any thoughts on the two
>>distinct angles, Python vs. Ackerman? Can this be some sort of bifurcation?
>>We
>>do have a pendulum after all. http://en.wikipedia.org/wiki/Local_bifurcation
>>
>>A video for your entertainment...
>>http://www.youtube.com/watch?v=jzUr3GI_ulE
>>
>>Vi
>>
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--
Kurt Rutter, RN, MSN
Kauai Community College
Nursing Department
krutte@xxxxxxxxxx
cell: 631-9131
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