RE: Curtain Motor RPMs

["Mick Furlong" <dorsai@xxxxxxx>]

doh
Thanks Keith
realised it was down t  gearing after I sent the mail!

Mick





> -----Original Message-----
> From: Keith Doxey [mailto:ukha@xxxxxxx]
> Sent: 01 July 2001 12:37
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Curtain Motor RPMs
>
>
> How long is a piece of string?
>
> Depends on the size of the pulley that is driving the cord and
> how wide your
> windows are.
>
> If you have a 4" diameter pulley then each revolution will move
the cord 1
> foot. My 3 foot wide window would be fully open in 1.5 revs. If the
motor
> does 10RPM then the curtains are either open or closed.
>
> If you have a 1" diameter pulley then 1 rev = 3" travel.
Gear
> down t  1 rpm
> and you get 3" per second etc.
>
> If you have windows 10 feet wide then each curtain has to move
> 60". How long
> do you want it t  take for a full open/close.
>
> I have some industrial size curtain motors that I "rescued"
from
> the skip. I
> cant use then at the moment unless I want digital curtains (open or
closed
> but nothing in-between) but on the original 20 foot wide windows they
were
> fine :-(
>
> Keith
>
> > -----Original Message-----
> > From: Mick Furlong [mailto:dorsai@xxxxxxx]
> > Sent: 01 July 2001 12:18
> > To: UKHA Group
> > Subject: [ukha_d] Curtain Motor RPMs
> >
> >
> > Anyone have any idea what sort of RPM curtain motors need to run
> > at to get a
> > fairly smooth contolled opening speed?
> >
> > Mick
> >
> >
> >
> >
> > ____________________________________
> > Automated Home UK
> > http://www.automatedhome.co.uk
> > ____________________________________
> >
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>
>
>




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http://www.automatedhome.co.uk
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____________________________________
Automated Home UK
http://www.automatedhome.co.uk
____________________________________

Your use of Yahoo! Groups is subject t  http://docs.yahoo.com/info/terms/