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'DelTang' Failures - What Am I Doing Wrong ?
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 Posted: Sun Oct 27th, 2019 03:20 pm
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Rick Dow
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My last two DelTang conversions have been failures.


Tonight's failure is as follows:

I finished up the conversion and plugged in the 2 cell Li-Po Battery.
The LED on the DelTang RX61-2 receiver immediately began blinking. 

Since I had the Transmitter nearby,
I grabbed it and waited until the receiver began blinking rapidly.

When it did, I depressed the BIND push button on the transmitter (DT Tx21).
After a few moments I pressed the power button on the transmitter.
The LED on the receiver stopped flashing and stayed on steadily. 
 
All Good ... or so I thought.


When I opened the throttle, nothing happened.
There appears to be no connection between the transmitter and the locomotive.
I have checked all the wiring connections. 

So, I turned off the transmitter. 

Then I picked up my DelTang pencil shaped magnet,
to turn off what passes for a reed switch on the Rx61-2,
and it would not turn off like in my other installations. 

I had to unplug the battery from the receiver, to get the thing turned off.


For what its worth, this installation was on an Alco diesel by Atlas,
that I was hooking up for the grandchildren.
I definitely had removed all of the track pick-up wiring.

Any idea what I'm doing wrong?    


Thanks

Rick




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 Posted: Sun Oct 27th, 2019 03:30 pm
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Rick Dow
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Last month, I attempted unsuccessfully to convert a Mantua 2-6-6-2 logger.


I will say that this locomotive was a bear to take apart and put back together.
I know for a fact that I disconnected all the track pick-up wiring and brass axle sliders.

Then I re-wired the two motor leads and fed the wiring back into the tender,
after which I did the usual conversion to a Rx61-2 receiver. 

After binding the transmitter I assumed I was in business.
But when I opened up the throttle there was no reaction. 


I have three other locomotives that work splendidly with exactly the same installation process,
so these past two failures are a mystery that needs solving.


Rick




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 Posted: Sun Oct 27th, 2019 08:57 pm
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W C Greene
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Howdy Rick

I'm not sure about the problem,
but Mantua locos with the stock open frame motors (and other brands also)
have one of the brushes "wired" to the metal frame.

You might try isolating the motor(s) from the frames,
and see if that fixes the issue.
Keep us informed.

Woodie




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 Posted: Sun Oct 27th, 2019 10:27 pm
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Rick Dow
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Aha, okay Woodie.

I will try my best to check. 
Not great at this stuff. 

I'm assuming that in order to isolate the motor,
I will make sure there are no soldered wires or strips of brass,
leaving the motor and connecting to the frame somehow.

Rick




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 Posted: Mon Oct 28th, 2019 07:48 am
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fallen
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Hi Rick,

A couple of suggestions to check.


Binding is usually quite straightforward,
the only time I have had problems has been when there is a strong WiFi signal in the area,
which seems sometimes to confuse the Rx.

This has happened in an exhibition hall, when the fix was to go outside to bind the loco,
and next to my desktop PC, when the solution was to turn the PC off.


On the magnetic switch, my Rx has one but it only turns the Rx on,
you have to hold down the Bind button on the Tx for a few seconds to turn it off.

Of course, if the Tx and Rx have failed to bind this will not work.

You really need a normal switch as well to turn the loco off before storing it,
as the Rx draws a small current even when the on board switch is off.


Frank


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 Posted: Mon Oct 28th, 2019 08:03 am
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davecttr
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I also had binding problems when near my computer and my WIFI hub,
plus surprisingly my desk lamp.

Paradoxically it is sometimes better to increase the distance,
between the Tx and Rx when binding.

The Lemon 6 channel DSM2 Rx's I am using in my coupler project,
have instructions actually recommend an increased distance,
as being too close can confuse the Rx.




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 Posted: Mon Oct 28th, 2019 01:20 pm
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Rick Dow
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Thanks so much guys.


I suppose the question I would immediately ask is this ....

In this recent unsuccessful installation,
when I turned on the transmitter after holding the bind button down for a few seconds,
the rapidly blinking LED on the Receiver, immediately changed to steady light.

In the past, when my receiver's LED reacted in that manner,
it was an indicator that binding had been successful. 


Am I perhaps incorrect assuming,
that the change from rapid blinking, to a steady light,
is an indicator of successful Binding?


Thanks

Rick




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 Posted: Tue Oct 29th, 2019 11:45 am
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fallen
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Rick,

Usually when binding, the sequence is from slow blinking to rapid blinking,

then when you switch on the Tx a short period of slow blinking on both Rx and Tx,

then steady on both.

Frank


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 Posted: Tue Oct 29th, 2019 12:16 pm
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davecttr
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fallen wrote:
Usually when binding, the sequence is from slow blinking to rapid blinking,

then when you switch on the Tx a short period of slow blinking on both Rx and Tx,

then steady on both.


That's what happens when I bind a Rx.

Am I right in thinking that the Rx is actually transmitting during the bind process?




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 Posted: Tue Oct 29th, 2019 12:27 pm
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davecttr
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Thinks - check with 'paperclick' to confirm that your RX's have the Selecta feature disabled.






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