where does the model roll?

[JOddino]

----- Original Message -----
From: "Koenig, Tom" <Tom.Koenig at actewagl.com.au>
To: "'Discussion'" <discussion at nsrca.org>
Sent: Wednesday, January 08, 2003 3:31 PM
Subject: where does the model roll?


> Hi Guys,
>
> I've just been asked this question.........it never occurred to me to
really
> think about this, now I'm open to opinions, facts and anyone that has the
> cold hard knowledge.
>
> I have always assumed that a model rolls around the datum line ie: the
> crankshaft center line (not taking down and side thrust into
consideration)
>
> Now a mate of mine swears black and blue that in actual fact the model
rolls
> around the wing center line ie: it is the wing that rolls and all else
> scribes an arc around this.
>
> Can anyone can set us straight......please?
>
> Thanks
>
> Tom
>
I'll say it rolls around the cg but how many of you know where the cg is
along the vertical axis?

Jim

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