Posted by Dean Hoffman on April 7, 2010, 5:28 pm
David T. Ashley wrote:
> 2006 Honda Shadow 600 ...
>
> The other day I was maneuvering the motorcycle at the gym (turning it
> around by forward-reverse-forward-reverse-repeat) and nearly ran into a
> brick wall going forward at maybe 1/2 MPH. I was on the brake at about
> the same time, so I stopped about 1 cm short. But I thought ... what if
> I had hit the wall?
>
> Other times I've been slow on the brakes and hit a parking stop (those
> silly cement things about 4-6 inches high) at well under 1 MPH.
> Essentially I was coming to a stop just as the front wheel touched.
>
> Other times I've taken the motorcycle over a curb by positioning the
> front wheel against the curb, standing on the pavement with my but off
> the seat, and then applying power and walking with the bike to get first
> the front wheel then the rear wheel over the curb.
>
> I was just curious about a few points ...
>
> First, what are motorcycle front ends stressed for? What do you have to
> do to do damage? My common sense tells me that the activities listed
> above wouldn't do any damage because they don't generate as much stress
> as braking hard and/or hitting a pothole with the front wheel.
>
> Second, when is it wise to inspect things? How bad does it have to be
> before you'd want to look at things carefully?
>
> Third, what is the inspection protocol for front ends? What do you look
> for?
>
> Fourth, is it possible to have invisible damage where you have to remove
> the steering stem and have a look? Looking at the mechanical system, it
> looks like (because you have upper and lower bearings) that any
> overstressing would get the welds near the steering tube first, then the
> fork holders second, and that you wouldn't succeed in doing invisible
> damage internally where you had to tear things apart. What goes first?
> Can anything be invisible?
>
> Sooner or later I will bump something harder than I'd like ... so just
> curious.
>
> Thanks.
A miss is as good as a mile, they say. Did you get thrown
forward when stopping? You would've felt it.
There are too many things in this world that could maybe possibly
happen. A chunk of space rock or satellite could land on you. Don't
sweat the small stuff or the highly unlikely stuff. Life is too short.
A herd of doctors won't save you if God says your time here is up.
Posted by Outback Jon on April 7, 2010, 6:07 pm
On 4/7/2010 5:28 PM, Dean Hoffman wrote:
> A chunk of space rock or satellite could land on you.
Did you really have to give him something else to worry (and post inane
questions) about?
Posted by Doug Payne on April 8, 2010, 9:32 am
On 4/7/2010 12:35 PM, David T. Ashley wrote:
> What goes first?
> Can anything be invisible?
> Sooner or later I will bump something harder than I'd like ... so just
> curious.
Wear a cup so when your nuts clang off the tank they don't become
invisible.
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>
> The other day I was maneuvering the motorcycle at the gym (turning it
> around by forward-reverse-forward-reverse-repeat) and nearly ran into a
> brick wall going forward at maybe 1/2 MPH. I was on the brake at about
> the same time, so I stopped about 1 cm short. But I thought ... what if
> I had hit the wall?
>
> Other times I've been slow on the brakes and hit a parking stop (those
> silly cement things about 4-6 inches high) at well under 1 MPH.
> Essentially I was coming to a stop just as the front wheel touched.
>
> Other times I've taken the motorcycle over a curb by positioning the
> front wheel against the curb, standing on the pavement with my but off
> the seat, and then applying power and walking with the bike to get first
> the front wheel then the rear wheel over the curb.
>
> I was just curious about a few points ...
>
> First, what are motorcycle front ends stressed for? What do you have to
> do to do damage? My common sense tells me that the activities listed
> above wouldn't do any damage because they don't generate as much stress
> as braking hard and/or hitting a pothole with the front wheel.
>
> Second, when is it wise to inspect things? How bad does it have to be
> before you'd want to look at things carefully?
>
> Third, what is the inspection protocol for front ends? What do you look
> for?
>
> Fourth, is it possible to have invisible damage where you have to remove
> the steering stem and have a look? Looking at the mechanical system, it
> looks like (because you have upper and lower bearings) that any
> overstressing would get the welds near the steering tube first, then the
> fork holders second, and that you wouldn't succeed in doing invisible
> damage internally where you had to tear things apart. What goes first?
> Can anything be invisible?
>
> Sooner or later I will bump something harder than I'd like ... so just
> curious.
>
> Thanks.