Re: Help! Smoking Motor;

["Sutton" <sutton@ekokarts.com>]

Well the rating is around 30 amps from 24v correct? It probably is not
willing to handle the 75+ amps you are probably running constantly. If at
all possible, can you gear it down lower? Give it a good helping of boot
scoot to get it going too. Unlike series motors, your field power is kind of
fixed. You can over power your armature at start easily, quickly cooking it.

I don't know if this helps you any though...
Erik

>
>
> I have just put a new motor on my e-scooter and when I wired it up
> and took it for a drive and it smoked.  It smelt of Flux and general
> electric burning smell.  The motor is a Bosch 24v 750 watt permanent
magnet
> motor and is being powered by two 12 v deep cycle batteries in series,
> through a scoota 24v 120 controller from 4QD.
>
> The motor is too hot to touch and keeps on smoking for a long period
> when the bike is not moving.
>
> Any body know what I can do?
>
>
> James
>
> -----Original Message-----
> From: PETER VANDERWAL [mailto:peterv@peoplepc.com]
> Sent: 13 March 2000 16:23
> To: ev@listproc.sjsu.edu
> Subject: Re: JM2000 electric scooter
>
>
> > I am in winchester in England if anyone knows of a British Controller
> > manufacturer.
> >
>
> 4QD is in England and they make some really nice PMDC motor controllers
that
> are VERY affordable.
>
> http://www.argonet.co.uk/education/4qd/index.html
>
>