[python] Re: Wheel size and centrifugal force
- From: "25hz" <25hz@xxxxxxxxxx>
- To: <python@xxxxxxxxxxxxx>
- Date: Fri, 7 Sep 2007 22:40:47 -0400
I remember the whole centrifugal force point came up a while back and
someone even managed to find a website that allowed you to enter a bunch of
parameters and calculate the force generated by a rotating mass (wheel). It
turns out that the highest forces are felt/generated when all three
rotational axis intersect. The centrifugal force effect really drops off
fast when you remove one of the pivot axis and drops off even faster the
further you move it from the point the other axis intersect. In the case of
the pythons, the pivot is the "yaw" axis, the axle is the rotational axis,
and the front tire's contact patch with the ground is the roll axis. It's
fine to spin a wheel and feel the centrifugal effect, but when you add the
actual dynamics of the python's frame design, there's very little effect
left at all. The same rule applies to normal diamond frame bikes. The mass
of a spinning object has far more effect than the size/diameter.
> "Bigger wheels also means larger wheelbase (to some extend), which
> results in a bigger turning circle. But on the other hand, a long
> wheelbase could also mean more stability during high speed travel. "
>
> I think centrifugal force would be the bigger difference, perhaps more
> so on the front.
>
> Dave
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