Subject:
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Re: HELP! Train motors dead and dieing!
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 14 Nov 2003 23:12:07 GMT
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Viewed:
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2191 times
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On Nov 14, 2003, at 5:51 AM, Peter Ehrlich wrote:
> On Fri, 14 Nov 2003 17:06:47 +0000, Mark Riley wrote:
>
> > In lugnet.trains, Reinhard "Ben" Beneke wrote:
> > > In lugnet.trains, Peter Ehrlich wrote:
> > > > Hmm. I've setup a bigger layout (one floorsworth) and still its a
> > > > full
> > > > 9v on the farthest away point.
> > >
> > > Hi Peter!
> > >
> > > But that is only measured without electric load. Even if you have a
> > > really high resitance in the joints of the track, you still will have
> > > the 9V at any given point of the track as long as you have no
> > > parallel
> > > load on the track. A motor might have much less than 9V at that far
> > > away point of the loop...
> >
> > You can test this for yourself. Measure the voltage of a 9v battery
> > with your voltmeter, then measure it again in series with a 10K
> > resistor. It's still 9V! Now, think of all those track pieces (and
> > joints) as tiny little resistors...
>
> Okay I tried measuring resistance on track 47 joints long (a broken
> circle) but still, the resistance is only 2-6 ohms. Then I tried
> running
> them one at a time. Even on top notch the older motor needs nudging to
> start on straight, has real power only on curves, and slowly stops on
> longer straight sections.
>
> The second, newer, motor cannot start on straight (even right next to
> the
> contact bricks) but can go down to notch two before grinding to a halt
> on
> straight.
>
> Has anyone else had problems of this nature?
>
> Thanks for the help,
> --Peter
Peter,
It sounds like the wheels are too close together and can not contact
the inside of both rails of a straight. Curves are closer together for
a train motor. Wheels are press fit on axles so can move.
Bruce
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Message is in Reply To:
 | | Re: HELP! Train motors dead and dieing!
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| (...) Okay I tried measuring resistance on track 47 joints long (a broken circle) but still, the resistance is only 2-6 ohms. Then I tried running them one at a time. Even on top notch the older motor needs nudging to start on straight, has real (...) (21 years ago, 14-Nov-03, to lugnet.trains)
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