[Fwd: Re: [ILUG-Social] using a notebook on the train?]

[Brendan J. Farrell]

I have used my laptop on the move for a long time, there are 2 low tech
options,

1. put it on your lap, if space permits, pretty good suspension in the
average
lap !!!

2. more practical, if you have a fleece or some such garment fold it
neatly, put
a hardback notepad or just the hard cover something solid (just slide it
into
your backpack or laptop bag along with your laptop) on top of the fleece
and put
the laptop on top. this gives you the vibration dampening without the
overheating
that comes from resting a laptop directly on fabric.

Brendan

Padraig Brady wrote:

> OK I got a new notebook:
> http://www.dnuk.com/systems/quadra-141-1200c.html
> which has a HD with the following specs:
>
> --------------------------------------------
> Vibration
> --------------------------------------------
> Operating      9.8m/s2 (1.0G) (5 to 400 Hz)
> Non-Operating  49m/s2 (5.0G) (5 to 500 Hz)
>
> --------------------------------------------
> Shock
> --------------------------------------------
> Operating  1,715m/s2 (175G) (2ms)
> Non-Operating  (800G) (2ms) (120G) (11ms)
>
> Note IBM give ratings like:
> Random (RMS) 0.67 G (5-500 Hz)
> Swept swine  1 G 0-peak (5-500 Hz)
> So this suggests and even smaller
> typical operating vibration window :-(
>
> Anyway I'm wondering about the operating vibration
> when using the train. On the intercity sligo
> line the carriages were bought in 1956!
> http://www.cie.ie/html/news/media/oirail.html
> And there is a VERY noticable vibration at
> about 10Hz I'm guessing, and it's seems very
> close to 1G, as my finger is tapping the table
> (though due to the springiness of my finger I
> can't be sure).
>
> So my question is, is there any way I can test
> the vibration level?
> Could I make/buy a 4 legged springy stand for it?
> Would it be easier to lobby government for new
> carriages?
> Am I being too careful with my new toy?
>
> thanks
> Padraig.
>
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