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 13:51:56 GMT
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Viewed:
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1861 times
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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
---------------------------------
Only when you try to build with Mega Bloks do you realize the tremendous
quality of Legos.
Peter Ehrlich
peter@dairysight.com
www.routetruck.com
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Message has 1 Reply:
 | | Re: HELP! Train motors dead and dieing!
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| (...) 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 (21 years ago, 14-Nov-03, to lugnet.trains)
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Message is in Reply To:
| | Re: HELP! Train motors dead and dieing!
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| (...) 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... :-) Mark (21 years ago, 14-Nov-03, to lugnet.trains)
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