[python] Sv: Re: gyro forces


----Ursprungligt meddelande----
Från: 25hz@xxxxxxxxxx
Datum: Oct 22, 2005 4:43:08 AM
Till: python@xxxxxxxxxxxxx
Ärende: [python] Re: gyro forces

I showed it to two acquaintances that ride penny/farthings and one of 
them
said it happened to him, but not as fast or as ugly.  The huge rubber 
tire
is solid and stretched to fit over the rim.  They said the tire heats 
up on
long, fast downhills because of the frame wobbling badly, and as the 
tire
heats up, it doesn't need to stretch much to come off the rim they 
said.

It's doubtful gyro forces had much to do with it because, from the 
gyro math
page, big diameter + low mass = weak forces.  If anything, it might be
centrifugal force, plus the wobble, that helped the warmed up tire 
come off
the rim.



Yes, centrifugal force was what I had in mind while I wrote gyroscopic 
force. 
Another enigma to solve.


olaf



> If you have high speed service it's not a big deal. Just get it 
going and
do
> something else for a while. I really enjoyed it. He *did* have his 
feet
over
> the bars. I initially thought he was a weenie and bailed out but in 
fact
in
> the slo-mo replay you see he looses the rubber tire on his front 
wheel
> resulting in slippery steel wheels on pavement.
>
> Daryl
>
> >From: Jürgen Mages <jmages@xxxxxx>
> >Reply-To: python@xxxxxxxxxxxxx
> >To: <python@xxxxxxxxxxxxx>
> >Subject: [python] Re: Sv: Re: gyro forces
> >Date: Thu, 20 Oct 2005 21:15:42 +0200
> >
> >>Watch "Jack Castor's Epic Downhill Crash!!"
> >>http://www.bikeroute.com/jacksCrashclip.avi

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