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Commander Kinsey Commander Kinsey is offline
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Default Why are stairlifts so slow?

On Tue, 09 Jun 2020 06:48:22 +0100, Clare Snyder wrote:

On Tue, 9 Jun 2020 11:44:25 +1000, Xeno
wrote:

On 9/6/20 12:24 am, Commander Kinsey wrote:
On Mon, 08 Jun 2020 15:19:12 +0100, Xeno wrote:

On 8/6/20 11:55 pm, Commander Kinsey wrote:
On Thu, 21 May 2020 19:05:23 +0100, Thomas wrote:

It is all about the gearing to be able to get your fat heavy ass up
there.
Shift you car to 4th from a stop and see how far you go.

A motor is not like an engine, it has more power when slower, and
wouldn't have a problem getting it going.

Electric motors have 100% torque at stall.

Not induction motors. or even shunt or mermanent magnet motors.
Series wound DC or universal brush motors do -Max torque at minimum
RPM, minimum torque at max RPM - all due to a phenomenon called
"counter EMF". MOST chairlifts today use a permanent magnet DC motor
which still has reasonable starting torque - but overloading a
permanent magnet motor can actually demagnetize the permanent magnet
to a fegree. Not as seriopus a problrm with newer rare earth magnets
as it was with alnico.

I am pleased to see that you at least know the difference between a
motor and an engine. There is hope for you yet.

I also know that a lot are designed so badly that if they stall for more
than a couple of seconds, they burn out. This includes an £80 strimmer


Motors are designed to *rotate*. Stalling them for any length of time is
never a good idea.

I bought (so not cheap ****). I just sent it back and got it replaced,
happy in the knowledge that either the shop or the manufacturer was out
of pocket.


Sounds like your example was *abuse*.

ANY use of ANYTHING by Com Kinzie is abuse


WHAT is YOUR problem WITH capitals? And don't try blaming yahoo groups like you usually do.