Speed limits

"Richard" <richard2002@ntlworld.com> wrote in message
news:E811b.499$vM3.51@newsfep1-gui.server.ntli.net...
> >
> > I don't know exactly how big it is, but seeing a racing bike drive
> > through an S bend, with something like 90 degrees of roll rotation in
> > under a second it must be a fair old size.
>
> So assume 180 degrees/second squared, and 50kgm2 MoI - still only requires
> 50pi moment, which with a 50cm moment arm as assumed throughout is a 100N
> force. Inconsequential, and hence I ignored it.
>

just out of interest, do these calculations suffice to explain why a Formula
1 car is theoretically capable of driving on the ceiling of a tunnel, yet
they still prang them now and then. (not trying to make a point or anything)

--
athomik

In message <Dec0b.383$W%.351868@newsfep1-win.server.ntli.net>, Richard
<richard2002@ntlworld.com> writes
>You will note from the image in question that the bike/body CoM is
>clearly outside the base of contact. The only way in which he can stay
>on his bike is to be turning at sufficient speed (in angular and linear
>terms) to produce a 'centrifugal force' relative to the internal
>reference frame:
Shouldn't this really be "Centripetal force"?
--
Clive

In message <bhtbg4$2sbq8$1@ID-109418.news.uni-berlin.de>, athomik
<athomik@transaxon.co.uk> writes
>> The original question was about the fact that the picture *may* show a
>> dangerous undertaking maneuvre.
>>
>Make that an *over*taking maneuvre.
>
>--
No, he might just be right, and making a killing for some poor sod in a
not very nice job.
--
Clive