On 24/09/2019 19:25, Andy Burns wrote:
Harry Bloomfield wrote:

The are supplied with an emergency manual winding handle, for use when
the electrics fail.

But it would take hours and wear you fingers to the bone to do it that
way ... use a cordless drill with suitable bit.


These guys can help, I think they do something with the volts ...

https://www.youtube.com/watch?v=wK30R1gsgGk

--
Adrian C