Garden Railway Forum

BaBBLR:117842 wrote:Hi Rik,

Is it possible to operate servo's using the TX22 transmitter and a deltang receiver?

The previous responses say it all - not just in theory but also in practice.

I'm thinking of supplying a transmitter which is better suited to live steam models, let me know if you are interested.

Rik

ge_rik:117845 wrote:

BaBBLR:117842 wrote:Hi Rik,

Is it possible to operate servo's using the TX22 transmitter and a deltang receiver?

The previous responses say it all - not just in theory but also in practice.

I'm thinking of supplying a transmitter which is better suited to live steam models, let me know if you are interested.

Rik

Thanks all for the responses. It was being able to ditch the lump of Tx for my steam engines that appealed Rik. If you need a guinea pig to trial one, Im in!

I will be doing this very shortly with one of Rik's TX 24's and an RX102. Once I get the chance to swap it all over linkage wise I will post up how it goes.

Hi Rik,

First let me say, albeit belatedly, good luck with your venture.
I have studied your web pages and have a couple of questions if you don't mind (the questions are preceded by background info).
We have four live steam locos currently fitted with Saturn 2.4gHz RC gear using 2 Tx's (2 locos on one Tx and 2 on the other - yes they are his and hers!); will your Tx's bind to a Saturn Rx, or are the coding protocols (if that is the correct term) different?
I have in stock a GRS body kit and an Otto chassis which I am intending to build as a battery powered loco. The (5) track powered locos are controlled via a 'Train Engineer'. If I have understood your info correctly I should be able to fit RCT Rx's to all of the 'electric' locos, irrespective of power source? However, would I be correct in assuming that a Rx can only be bound to a single 'Selecta' Tx, i.e two different Tx's could not be bound to the same Rx to provide operational flexibility? I am pretty certain that I know what that answer will be -no you can't, but it may answer somebody else's question. That's it - thanks.

Hi Merlin
I'll address your questions in turn

merlin2:118041 wrote: will your Tx's bind to a Saturn Rx, or are the coding protocols (if that is the correct term) different?

I'm afraid your suspicions are correct. The two systems are not compatible. The RCT/Deltang system uses Spektrum DSM2 which is not the same as that used by Saturn

merlin2:118041 wrote: If I have understood your info correctly I should be able to fit RCT Rx's to all of the 'electric' locos, irrespective of power source?

Yes, that's correct to some extent. The RCT rxs can cope with anything between 3.5v and 18v. If your track power is 22v or 24v, then you will have problems. The Rxs can be constructed with components which will take higher voltages, but they will have to be a special order.

merlin2:118041 wrote: However, would I be correct in assuming that a Rx can only be bound to a single 'Selecta' Tx, i.e two different Tx's could not be bound to the same Rx to provide operational flexibility? I am pretty certain that I know what that answer will be -no you can't, but it may answer somebody else's question. That's it - thanks.

Yes, you're right. Each Rx is bound to a specific Tx or to a specific Selecta ' channel'. You can't bind an rx to a more than one Tx (or selecta channel).

However, there is a feature called 'TxChange' which can be enabled on the Rxs which allows them to controlled by more than one Tx22. I've not played with it myself so can't comment on how flexible it is. If you are interested I could do some experiments.

Sorry, looks like RCT gear is not going to be able to meet all your needs.

Rik

Hi Rik,

Many thanks for coming back to me so promptly and for the info.

Still gives me food for thought for the future though. At the moment every thing is working (now that'll be the kiss-of-death!) but future conversion to RCT equipment is not unlikely. The max track voltage is 16v so no issues there.

The first candidates are likely to be my wife's 2 loco's, as she doesn't like the aircraft type Tx, which raises another question which occured to me after I had sent the previous message. The Merlin, which as you know, uses a single control valve for direction and steam admittance which I can see would operate from a Tx using the rotary control in centre off mode. However, her RH loco, of course, has a 2 channel requirement for reversing lever and regulator. The reverser I assume would be operated from a function switch, but ideally would require the speed control to be from stop to stop. To avoid having to re-program the Tx each time, would I be right in thinking that the regulator could use centre off to, logically, full clockwise, albeit with less fine control?

Thanks again
Cheers,
Mike

merlin2:118093 wrote:Hi Rik,

Many thanks for coming back to me so promptly and for the info.

Still gives me food for thought for the future though. At the moment every thing is working (now that'll be the kiss-of-death!) but future conversion to RCT equipment is not unlikely. The max track voltage is 16v so no issues there.

The first candidates are likely to be my wife's 2 loco's, as she doesn't like the aircraft type Tx, which raises another question which occured to me after I had sent the previous message. The Merlin, which as you know, uses a single control valve for direction and steam admittance which I can see would operate from a Tx using the rotary control in centre off mode. However, her RH loco, of course, has a 2 channel requirement for reversing lever and regulator. The reverser I assume would be operated from a function switch, but ideally would require the speed control to be from stop to stop. To avoid having to re-program the Tx each time, would I be right in thinking that the regulator could use centre off to, logically, full clockwise, albeit with less fine control?

Thanks again
Cheers,
Mike

Hi Mike
You can set up an individual receiver to use the full span of a servo. All you (or she) would need to do is remember which loco uses the speed knob 'centre off' and which uses the speed knob 'low off'.

I do produce a Tx with a potentiometer in place of the direction switch - which would be a lot gentler on the reverser mechanism. It's not (yet) featured on the website but I have made them for customers by special request.

Rik

Many thanks Rik. All info now copied and safely stored for future ref.
Thanks again for taking the time to answer my questions.

Cheers,
Mike

Some time ago I bought a Tx22 (and other bits) from Rik and a couple of days ago I finally unpacked it and found that it had a small problem with a component. Rik advised me to return it which I did and I've already had the postage refunded and the repaired controller is on it's way back to me. An excellent service I feel.

Howardws:118449 wrote:Some time ago I bought a Tx22 (and other bits) from Rik and a couple of days ago I finally unpacked it and found that it had a small problem with a component. Rik advised me to return it which I did and I've already had the postage refunded and the repaired controller is on it's way back to me. An excellent service I feel.

Thanks Howard
I suppose, being a fellow modeller, I know how frustrating it can be when you are waiting for something to arrive so I like to turn things around as quickly as I can.

Hope we get some more decent weather soon so you can get back out into the garden.

Rik