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'Micron' Radio Control 'DelTang' Tx22X Transmitter & Servos
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 Posted: Tue Jan 1st, 2019 12:49 pm
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davecttr
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Has anyone any experience of the Micron Radio Control Rx22X transmitter?

In addition to Throttle, Selecta and Inertia knobs, it has 2 switches and 2 push-buttons controlling channels 3, 4 , 5 and 7.
The channel 5 button is also used for binding.

I am interested in using these switches to control the Toggle Servo option in RX60 series receivers.
If the channel 5 bind button can control a servo, I would be able to control up to 48 servos?

The servos would be used to operate on vehicle (not loco) couplers with 2 couplers per vehicle up to 24 vehicles could be controlled.
Binding 2 Rx to each Selecta position and using the P1/P2 pads on the first receiver and the P3/P4 pads on the second Rx.

I estimate the need for about 20 vehicle conversions at the end of the project.
I also need couplers which work!
Prototype development is in its early stages.





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 Posted: Tue Jan 1st, 2019 04:43 pm
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Toeffelholm
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Hi,

Yes, basically this would work, if you program the Rx outputs to servo control.
For use with the toggle switches you could program the half stick/offset option.
So you can control 2 Servos with one switch.
But surely only if you don't have to reduce servo movement. 

The servo toggle option is part of the v611/v610 programming procedure and thus available for all R6x. 

Maybe choosing the "half stick" option to control 2 servos with one channel is preferable in general.
Then uncoupling is activated only as long as your thumb is on the button. 

With max. 7 channels on Tx2, 12 Servos could be controlled.
An Rx61 provides 8 outputs that can all be set to control servos.
Then handling with 4 selecta positions would be sufficient.
Sure, that would give you the task to build a transmitter with 10 push buttons,
and a 4 position switch from an Tx2 to control 20 cars.

Do you really need to control both couplers of a car?

I don't know what couplers you want to use,
but If the direction of the cars don't change on your layout,
maybe controlling one side would be sufficient and servos would reduce to 20?

But sure number of needed Rx's would remain.


Juergen




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modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track
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 Posted: Tue Jan 1st, 2019 07:42 pm
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davecttr
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Thanks Juergen. Lots of useful information there.

I am thinking if Microns Tx22X variant has 4 channels available for servo control I could use the toggle servo option,
which has the advantage that the amount the servo moves can be varied from 60% to 120% in 10% increments.

Pressing a button or moving a switch sends the channel low and the servo moves and stops,
pressing the switch again send the channel low and the servo moves back to its original position.

Why do I want to control 2 servos from one receiver?
I have two fixed 3 coach sets of local passenger coaches hauled by small steam locos.

They will be stabled in the carriage sidings overnight and in the morning the loco pulls the coaches out of the siding,
propels them into the station platform, uncouples then runs around the train using the passing loop,
couples at the other end and then pulls the coaches away.
 
The arrive, uncouple, run around, turn the loco, couple and move away sequence will happen several times an operating session.

Hopefully I can have one Rx in each 3 coach train and a servo at the end of the outer coaches.
There are also small rakes of freight wagons which could have a servo at each end,
plus I have the idea of a few individual wagons with a servo at each end, allowing some flexibility in dividing up trains.

The general idea is hands off operation anywhere on the layout, or a DC/DCC layout as well.




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 Posted: Tue Jan 1st, 2019 11:11 pm
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Rod Hutchinson
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Hi Dave,

I am using TX22a & RX60 to operate couplers.
I have been experimenting with Magnetic Actuators to operate Link & Pin.
Video below.

My next experiment is to use a 4mm coreless motor to pull open a Kadee.
I would be interested to see your experiments.

https://youtu.be/ZDWcx4PuuB4





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 Posted: Wed Jan 2nd, 2019 12:03 pm
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Toeffelholm
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Hi Dave,

If you need the automatic coupling only to change the loco from one end of the train to the other,
wouldn't it be sufficient to have the servos in the locos ?

I mean, operation on my layout will be similar and only my locos will be equipped with automatic coupling.

For example

shunting test


Juergen




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 Posted: Wed Jan 2nd, 2019 01:12 pm
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davecttr
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This is the type of 00 scale loco that will be hauling the trains.
It will need to couple from the tender or the 4 wheel bogie at the front.
Hardly enough room in the tender and no room at all on the front bogie.
Prototypical operation requires it couples at the front and then pulls the coaches out of the storage sidings.
My layout station would not have a dedicated loco to move coaches and wagons.
The loco assigned to that train would do the job.

Many UK 00 scale model rail operators remove the hook from loco tension lock couplers,
leaving the bar to which the hook on the rolling stock engages.
It makes coupling/uncoupling easier, so I intend to fit the RC uncoupler to the coach or wagon.

I also need to look at the option of using an actuator rather than a servo.







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 Posted: Wed Jan 2nd, 2019 07:14 pm
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Toeffelholm
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Ah yes, that would be difficult.


But with this type of coupling, may be this would be worth considering:

Hambleden Valley

coupling in action from 3:30.


Juergen




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 Posted: Wed Jan 2nd, 2019 07:49 pm
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davecttr
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That looks like an under track magnet or electromagnetic coupling.
These are already available for 00 scale tension lock couplers, but I have tried them and don't like them.
They only uncouple when over the magnet and I would need dozens of magnets for my layout.

With an on vehicle system you have the flexibility of uncoupling anywhere and you can do it at a distance, say 5 metres.
Just push the train into the siding, press the button on the TX and drive away, no need for precise positioning.
Nice live steam locos!

Your video is interesting, are you using a linear servo to raise your coupling?
This might work for me.
A tiny linear servo from Micron only has about 35 grams of pulling power,
but the coupling hook for a 00 scale tension lock weighs less than 1 gram.




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 Posted: Sat Jan 5th, 2019 07:08 am
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Toeffelholm
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Hi Dave,

Yes it's a simple linear servo.

The mechanic at the buffer is mounted visible here, as this represents a warehouses own shunting loco,
pulling loaded wagons inside, distributing them in the warehouse and pushing empty wagons outside again. 

So for ease of operation for the driver, he is able to lift the clevis with a lever in the cab.
The simple wire will later be replaced with a chain or something representing a steel rope.


Juergen




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 Posted: Sat Jan 5th, 2019 02:22 pm
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Rick Dow
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Hi,

If applicable in any way, please discuss the same application in HO for Kadee couplers.

Thank you

Rick




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