Hi,
I placed the Time Machine hook at the front to keep
the weight down. For low ceiling gliders weight is
very important. I hold the Time Machine just under
the leading edge of the wing at the wing pylon/fuse so
the rubber stretch is also somewhat maximized.
Kurt
--- barrysholder <barry_at_signandart.com> wrote:
> --- In Indoor_Construction_at_yahoogroups.com, Kurt
> Krempetz
> <krempetz_at_...> wrote:
> >
> > Hi,
> > The location of the hook is not a very
> important
> > issue except it must be in front of the CG of the
> > model. After that it boils down to a design
> choice of
> > maximizing the rubber band stretch and/or reducing
> the
> > amount of additional clay in the front of the
> model.
> >
> > So for example if you hold the model at the
> end of
> > the fuse you want to move the hook as far back on
> the
> > model as possible to maximize rubber stretch. Or
> you
> > may want to place the hook is place up front to
> reduce
> > the amount of clay that is needed to have the
> model
> > balance.
> >
> > I hope this helps,
> > Kurt
> > Well that makes complete sense. I guess I was
> trying to make it
> more complicated than it had to be. I am building a
> modified Coot
> for this weekends contest and really didn't know if
> a low ceiling
> made any difference than a high ceiling. The Time
> Machine had its
> hook way up front and these are very ,similar
> proportion wise. We'll
> see this weekend. Thanks Kert
> >
> > --- barrysholder <barry_at_...> wrote:
> >
> > > Can anyone explain the pros and cons of hook
> > > location a catapult
> > > gliders? Thanks guys
> > >
> > >
> > >
> > >
> >
> >
> > Kurt Krempetz
> >
> > __________________________________________________
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>
>
>
>
>
>
Kurt Krempetz
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Received on Tue May 09 2006 - 11:43:24 CEST