Posted by Stephen! on July 9, 2007, 11:43 pm
> You made the right choice in running the risk of overbraking instead of
> underbraking. That is - IIRC - why the MSF teaches students to hold a
> locked rear wheel rather than modulate.
The stated purpose of the "Controlling a Rear Wheel Skid" exercise is
to teach you not to release the rear brake should the rear wheel start to
skid. The reason for that is to prevent a "high side" get-off should the
rear wheel slide to one side or the other.
The underlying purpose of the "Controlling a Rear Wheel Skid" exercise
is to show the neophyte motorcycle operator that a rear wheel skid is not
an automatic death sentence. That having the rear wheel locked will not,
in and of its self, cause you to crash. MSF knows the motorcycle rider
*will* eventually be in a situation where the rear wheel will skid (think
pre-ABS days) and doesn't want the skid to come to them as a surprise
causing a "WTF do I do now?!?" reaction when it happens. By then they've
"Been there, Done that."
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Posted by Cam Penner on July 12, 2007, 12:50 am
>
> > You made the right choice in running the risk of overbraking instead of
> > underbraking. That is - IIRC - why the MSF teaches students to hold a
> > locked rear wheel rather than modulate.
>
> The stated purpose of the "Controlling a Rear Wheel Skid" exercise is
> to teach you not to release the rear brake should the rear wheel start to
> skid. The reason for that is to prevent a "high side" get-off should the
> rear wheel slide to one side or the other.
>
> The underlying purpose of the "Controlling a Rear Wheel Skid" exercise
> is to show the neophyte motorcycle operator that a rear wheel skid is not
> an automatic death sentence.
I read a research paper once where they tested various bikes and rider
skills with stopping distances where they were told to release or not
release the rear brake skid.
Releasing and re-applying (iirc)resulted in longer stopping distances on
average because riders were unintentionally releasing some front brake
pressure while trying to modulate the rear. This ultimately was to
their braking detriment.
--
Cam
'00 Sprint RS
Posted by David Steuber on July 11, 2007, 12:30 am
> All in all - from the video - it looks like once the deer started moving
> you did more things right than wrong. Your speed looks a bit high for
> the type of road you were on though, eh?
I may have been going a bit fast. I should have gotten on the brakes
earlier rather than just rolling off the throttle. Deer are crazy
beasts.
It happened so fast that doing anything by the numbers was out of the
question. There's a reason for the two second rule for following
another vehicle. It takes two seconds to begin to react to
something. Looking at the video frame by frame, I can't argue with
that.
My first thought after I passed the deer was surprise that I didn't do
an endo.
--
I will not be a puppet to a corporation! --- Faye006
Posted by .p.jm on July 11, 2007, 12:42 am
On Wed, 11 Jul 2007 00:30:52 -0400, David Steuber
>> All in all - from the video - it looks like once the deer started moving
>> you did more things right than wrong. Your speed looks a bit high for
>> the type of road you were on though, eh?
>I may have been going a bit fast. I should have gotten on the brakes
>earlier rather than just rolling off the throttle. Deer are crazy
>beasts.
OK. So, you agree, then, with my posts, where I argued with
the folks saying 'nice save', and I said 'No, it was rider
error, coupled with some good luck and a deer who got out of your
way for you' ?
>It happened so fast that doing anything by the numbers was out of the
>question. There's a reason for the two second rule for following
>another vehicle. It takes two seconds to begin to react to
>something. Looking at the video frame by frame, I can't argue with
>that.
>My first thought after I passed the deer was surprise that I didn't do
>an endo.
Or a doo-doo :-)
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Posted by David Steuber on July 11, 2007, 11:22 pm
..p.jm@see_my_sig_for_address.com writes:
> On Wed, 11 Jul 2007 00:30:52 -0400, David Steuber
>>
>>> All in all - from the video - it looks like once the deer started moving
>>> you did more things right than wrong. Your speed looks a bit high for
>>> the type of road you were on though, eh?
>>
>>I may have been going a bit fast. I should have gotten on the brakes
>>earlier rather than just rolling off the throttle. Deer are crazy
>>beasts.
> OK. So, you agree, then, with my posts, where I argued with
> the folks saying 'nice save', and I said 'No, it was rider
> error, coupled with some good luck and a deer who got out of your
> way for you' ?
No, I don't. I did not lose control of the bike. But there was luck
involved in the deer not following a closer path that would have
caused contact.
There was luck involved in the deer moving at all instead of just
staying safely in the field. I've gotten used to them staying put
rather than bolting out in front of me. And I have passed hundreds of
deer by now on my bike.
When I rode my mountain bike (Trek 6500) on dirt trails through a
park, I would ride past some deer that were so unafraid of people that
they practically smirked at me.
My only deer strikes were while I was driving a car. In both cases I
did not even see the damn thing until after I hit it. The first case
was a deer that was the first of many jumping a hedge row. The second
was a deer that ran into my passenger side mirror. The later just
broke my mirror. The former busted up my grill, headlights, a fender,
and the hood.
--
I will not be a puppet to a corporation! --- Faye006
> underbraking. That is - IIRC - why the MSF teaches students to hold a
> locked rear wheel rather than modulate.