[928uk] Off topic - Nurburgring

[Paul R Smith]

I thought it must be GPS based but didn't realise they had off the shelf 
things to do it in real time. (It may not be done real time of course, 
but with that dashboard type display on the video, it has the look of 
something that is displaying as it is happening. I can do it with GPS 
data and a spreadsheet but with only a 1 second resolution, the g data 
is effectively the average over 2 seconds.)

Reading that link, I am amazed at how people who obviously have a 
reasonable understanding of physics still mix up force and acceleration: 
"acceleration data is usually referred to in units of G, or the force 
due to gravity."

The other one I see all the time in TV programs is people calling 
themselves engineers mixing up force and pressure.

Smiffy


On 26/02/2012 3:44 a.m., Kevin Fearon wrote:
> Interesting question!
>
> Short answer - GPS data acquisition system.
>
> The problem being that in a bend - when the motorcycle is leaning - 
> centrifugal forces are balanced by gravity and the net lateral forces 
> (measured perpendicular to the axis of the motorcycle are not the same 
> as those perpendicular to the direction of travel, unlike the 
> situation on four wheels.
>
> I was going to construct the Free Body Diagram etc, but then I found a 
> good explanation here.
>
> http://www.sportrider.com/tech/how_to/146_0805_data_acquisition_analyzing_g_forces/viewall.html 
>
>
> Kindest regards,
>
> Kevin
>
>     ------------------------------------------------------------------------
>     *From:* Paul R Smith <smiffypr at clear.net.nz>
>     *To:* 928uk at lists.928.org.uk
>     *Sent:* Saturday, 25 February 2012, 1:36
>     *Subject:* Re: [928uk] Off topic - Nurburgring
>
>     How do you measure sideways g on a motorbike?
>
>     Smiffy
>
>     On 25/02/2012 5:17 a.m., Kevin Fearon wrote:
>>     One for Paul, and anyone else who enjoys the 'Ring.
>>     (Also on PistonHeads)
>>
>>     http://www.youtube.com/watch?v=W2KnufuYK5M&feature=player_embedded <http://www.youtube.com/watch?v=W2KnufuYK5M&feature=player_embedded>
>>
>>
>>     Kindest regards,
>>
>>     Kevin
>>
>>
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