Crosswinds
How
to handle them
Sooner
or later you are going to wonder about how to handle severe
crosswinds - probably while fighting them.
Surprise,
surprise - you don't have to do anything and the motorcycle will
handle most crosswinds just fine - with only normal responses from
you.
[When
I originally published this article I implied strongly that the
bike would automatically apply some counter-steer in reaction to a
wind gust. It turns out that your own counter-steering input is so
normal and modest when you respond to being blown off course that
you FEEL like it is automatic, but it is not.]
There
are a couple of things that you can do to make the experience less
stressful, however. For example, you can quit white-knuckling your
grips. When you hold on tight you also tend to stiff arm your
controls. That, as we've talked about before, merely allows
front-end instability to propagate into the rest of the
motorcycle. Relax your grips and droop your elbows. Allow your
bike to be a bit unstable. Drive in the CENTER OF YOUR LANE. Lean
forward and down to reduce your profile, and snug up your jacket.
What
about traction? You neither gain nor lose any significant traction
when the wind blows from your side unless you are in a curve.
While you are leaned into the wind all of the weight of the bike
remains on your tires (fancy that) and there is very little
lateral force scrubbing that traction away.
How
much lean do you need? Whatever the bike dials in for you. Should
you anticipate those gusts?
Should
you just respond quickly to a gust in order to remain in control
and traveling in a straight line? No, and no. Your bike will NOT
travel in a straight line. That is, as long as you allow it to do
its thing, your bike will be modestly blown off course with a gust
and the result of that movement is EXACTLY the same as any other
minor course change - you will need modest counter-steer input to
correct it - the CG of your bike will then be on the side the wind
came from and the result is that it will lean towards the wind.
Is
a heavier bike less likely to be blown around than a lighter bike?
No. What is primarily determinant of how great the effect of a
crosswind is on your bike is its profile. A garage door (GoldWing)
will typically be more harshly affected by crosswinds than a
lighter low profile bike.
Can
you mitigate some of that instability in any way? Yes. There are
cowling additions that can be designed (some are available off the
shelf - called 'belly pans') that streamline the airflow under
your bike and help (modestly) to reduce crosswind handling
problems.
Crosswinds
can be murder if you are leaned way over in a curve. Don't, if you
can avoid it.
As
a result of a crosswind your bike will move off course and normal
modest counter-steer will lean it into the wind. A strong gust
will blow you out of track. So, correct your steering, gently, and
keep going.
I
admit that sometimes a gust can be ferocious! I was on the Golden
Gate bridge once when a crosswind blew me into the adjacent lane!
But the bike was in no danger of falling down and it was easy to
get back in lane. Had the gust been a sustained blast I would have
been leaned over nearly 45 degrees. It was not, thankfully.
Note
... there are TWO times when a gusty crosswind changes your bike's
direction of travel: when it hits, and when it stops. Both require
that you allow the bike to respond and use normal modest
counter-steering. (When it quits you will be leaned over and, as a
result, your bike will move towards where the wind WAS coming from
until you straighten it up.
If
crosswinds involve huge short gusts, go park the bike. If the
crosswinds are more sustained, pucker up and keep going.
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