--- In
DSN_KLR650@yahoogroups.com, "Jud Jones" wrote:
>
> --- In
DSN_KLR650@yahoogroups.com, Lou wrote:
> >
> > At 07:28 PM 11/19/2008, Ross Lindberg wrote:
> >
> > >If it really is a joke and driveshaft equipped motorcycles cannot
> > >pull a wheelie, can someone explain to me how Charlie Boorman
pulled
> > >several wheelies on his big, fully laden BMW GS on the DVD "Long
Way
> > >Round"?
> >
> > The key concept to understand in this process is the Coriolis
Force,
> > which varies by hemisphere and by latitude. A spinning shaft
that is
> > aligned with the direction of the bike's motion is subject to
forces
> > that simply don't apply to the chain-drive situation. In the
> > northern hemisphere, the shaft rotation (particularly at higher
> > speeds) generates so much downward "pitch" that the front wheel
is
> > virtually glued to the pavement. At lower latitudes, near the
> > equator, the pitch forces tend to balance out so that the bike
merely
> > accelerates somewhat more quickly. In the southern hemisphere
these
> > effects are reversed and wheelies are a daily occupational hazard
of
> > motorcycling, to the extent that operators in the higher southern
> > latitudes -- and in particular on the continent of Antarctica --
are
> > compelled to ride their bikes backwards most of the time just to
keep
> > the "front" wheel in contact with the road.
> >
> > Hope this helps.
> >
>
> Yeah, it's like if you are riding on a merry-go-round and try to
throw a softball. What
> happens?
>
JUd,
it is a lot like shooting a .50cal M2B out the door on a helicopter.
Some figure it out and others, are just converting bullets to noise.
It is an amazing thing to see an aerial gunner that knows what he is
doing while engaging a target that is 90degress to the direction of
flight. How does he do it? He aims:
left (port), left, low,; right (starboard), right, high.
Its all quantum physics or was it quantum majik?
revmaaatin. who converts jet fuel to noise. I leave the difficult
jobs to aerial gunners.
.