"N_Cook" wrote in message ...
On 18/02/2016 16:46, Snuffy "Hub Cap" McKinney wrote:
I'm looking at adding a resistor or bulb inside an Acorn stair lift motor housing to keep the temperature about 40degF. The unit is in an unheated area and temps get too low for the motor to turn normally. I considered an electric blanket or pad but having an elderly person messing with something on the stairs is not a good idea. Also, there's the issue of having a separate part and cord to deal with.

Check this out and post some comments what you think. I have done this when setting up electronic devices in remote locations, installed in an insulated box with a car battery & resistor. In this case a night light bulb might be another choice.

Sketch
http://i67.tinypic.com/t9jmac.gif
http://oi67.tinypic.com/t9jmac.jpg


What happens if the room is cold and you selectively heat only the
bearings/gear box with hot air?

It keeps the grease from getting hard.