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Thanks for the reply, Mark.
Mark Riley wrote:
> Perhaps the speed of the two motors was mismatched for one reason
> or another.
>
> Do you know what brand and model of decoders you were using? • Both motors had Digitrax DN121 decoders
>
> Different decoders may move at different speeds with the same
> speed setting. This could be because of special decoder features, like
> "Back-EMF" or "silent drive" or whatever.
I don't think the DN121 has this.
> Also, most (if not all)
> decoders allow you to vary how the decoder responds to speed
> settings.
Both had the factory default speed tables.
We ran both motors without loads (okay, 1 had a bumper on it) around the loop,
and the speeds weren't identical, but they were close. Because the DN121 doesn't
have any kind of motor feedback control (it just puts out whatever voltage
corresponds to the speed setting) I would think the motors wouldn't fight unless
they were severely mismatched.
I would put my money on a combination of defective grey wheelsets and over-heating.
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Message has 1 Reply:
 | | Re: DCC slowing?
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| "Brian B. Alano" <throwaway@insightbb.com> wrote in message news:HJKpvH.1IqC@lugnet.com... (...) over-heating. Also the bottoms of 10025 and 10022 seem to rub. I've had to replace some plates so i made them tiles... Randall Lee Crabtree (...) (21 years ago, 14-Aug-03, to lugnet.trains, lugnet.org.us.indylug)
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Message is in Reply To:
| | Re: DCC slowing?
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| Perhaps the speed of the two motors was mismatched for one reason or another. This would cause the two motors to generate more heat (because they're pushing or pulling against one another) and lead to a possible overheating situation. I've read (...) (21 years ago, 13-Aug-03, to lugnet.trains)
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