On Sun, 28 May 2017 09:29:23 +0100, "Brian Gaff"
wrote:

Do these curtains need motor control or are they for the armstrong method?
If the former, then all are rubbish, get stuck break teeth off their gears
etc.

I am sure there are good and bad automatic curtain system and ours has
been running pretty reliably (twice daily) for over 30 years now. [1]
That said the track is straight and the curtains are only down to the
windowsill, rather that the floor (although they are lined and
weighted).

You are right though in as much as they can sometimes get stuck and
that is generally down to humidity and dust in the track making the
sliders create more drag. Next day or later the same day and without
any other intervention, they work perfectly again.

Cheers, T i m

[1] I have had to replace the main unit reservoir capacitor because
the unit lost any real torque ... and the LCD display no longer works
(so we can't change the opening / closing time (not looked into that
yet as it's item 1,638 on my 'to do' list)). ;-)