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Hornby Turntable with R8247? what settings what cable goes into which + - ?


brigader

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Hi

I have a spare port in one of my R8247 accessory/point decoder and it says I could use this to run a turntable..

However I am not quite sure what I have to do to get it to actually work:

So far I have done the following:

programmed

the CV517 (output 3) to 0 to provide constant power.

connected the turntable to the decoder port 3, and then select the accessory 83 on the elite and clicked the button... Nothing happened.

Am I doing this right, or do I need to do anything

different?

I also have a lighthouse which i would like to turn on and off, can I use this decoder to turn it off and on for a period of time...

It implies that I can do this :- So not sure what I am doing wrong.... Also is it worth doing this

or is it better to use a loco decoder as per the hornby turntable guide...(This will save me having to purchase a loco decoder just for the turntable though ;-( )

any help would be great thanks for reading.

thanks

Paul

The Hornby

R8247 Accessory/Point Decoder can be programmed to accommodate four point motors or solenoid operated accessories, plus other electrical accessories that require a constant or delayed current flow, for
example a turntable. Connection of the points or accessories

to the Hornby Accessory/Point Decoder is straightforward. The four outputs are factory set for the operation of solenoid (point) motors, however, by adjusting the CV settings of each output a graduation of varying ‘bursts’ of current up to a constant current

(turntable motor operation, lighting, etc.) can be obtained for each individual output.
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The easiest way to control a turntable is to use an engine decoder. Look at the thread "DCC turntable problems" for advice on this plus the the advice contained in decoder installation guides. The control speed control dial is used to control the direction

of the turntable.

As I see it, you need two ports on a R8247 to control the direction of a turntable, one to turn clockwise and another to turn anti-clockwise.

See these links to see how the turntable works ubder DCC decoder control:

http://www.youtube.com/watch?v=u_bPPfKpS94

and
http://www.youtube.com/watch?v=-4pXs3YYo88
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Hi

Thanks both of you for your replies..

I have seen the loco decoder demos and the hornby website previously, but as I had the R8247 and it states in all the blurb that this can do it.. I was hoping to save the price of a decoder as I have

two ports free on this R8247.) if I had something that supposedly already could do it... Or is using the R8247 a no no for this type of thing.. If so then Hornby should remove the info regarding the use of Turntable and lights on the R8247.......
just be

interested to know .. looks like i will be shopping tomorrow ;-)

regards

paul
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Thanks for searching Brightstar, I will ask customer care at hornby and see if they can

suggest anything.. Otherwise I will be buying the a loco decoder.. ;-) I take it using DCC with the turntable will make it queiter? I have an old Hornby turntable from the 70s, and it used to make a loud noise when turning ; Next task will be to see if anyone

has a diagram of how the motor fits together with all those plastic cogs to make sure i have put it back together properly.. All good fun.

regards

Paul
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I don't know what CVs are supported on the R8247 as there is nothing on the Hornby website.
The NMRA has two variations of CVs for accessory decoders.
F1 could be adjusted by CV3 or or CV515.
F2 CV4 or CV516.
F3 CV5 or CV517.
F4 CV6 or CV518.

See

Table 3 Accessory Decoder Configuration Variables on the NMRA website.
http://www.nmra.org/standards/DCC/standards_rps/RP-9.2.2%202007%20July.pdf
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Hi Brigader,

Follow this link for information on installing a turntable on a DCC layout:

http://www.brian-lambert.co.uk/DCC.htm#Turntables.

Follow this link for data sheets on R045 Turntabl, includes and exploded diagramme.

http://www.modeltrains.net.au/hornby/service_sheet_menu.asp

Follow

this link for the data sheet on R070 Turntable

http://www.modeltrains.net.au/hornby/service_sheet_details.asp?sheetid=212

I hope these are of use.
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excellent thanks for these, I will hopefully go and buy a loco decoder tomorrow and give this a try.

regards
Paul
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I've tested the output of the accessory decoder and if you do decide to go down this route, you will only be able to make it run in one direction, and at one speed. Connect one wire to the common terminal and the other to either the + or - terminal. When

you call up the turntable, one press will stop it and the other will make it move. The same should work for the lighthouse. I haven't tried running a turntable in this way but it would make sense. Good luck.
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Thanks Finner,

I will give this a try for the light house, for the turntable I have decided to go with a loco decoder.

I will play with the output settings for the light, at the moment i have set it to 0 on the cv value 517 for port 3 to

give it constant power.. I will have a play and see what can be done some time this coming week.

regards

Paul
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Ok I went to buy a loco decoder, but MZ were out of stock! Hmm no wonder why the high street is in decline, its easier to order online... But no good when you want something now!
Anyways I took a decoder from my cleaning car for now.. Which i only ever

need on full blast anyways so not sure if i will replace the dcc chip in it.

A bit fiddly on the solder front, but now got the motor and DCC control working.. Now just to work on these cogs.. Found the back page for the motor and assembly details..

So will have a play.. I remember previously the cogs would not work to well. My plan is to use the DCC to run it slower and hopefully keep it working and make it less noisy!... I have the original r070 the one with the water arm out the top ;-) Is the latest

model any better?

http://web.blissett.me.uk/house/hornby-service-sheets/ss-178-back.jpg

I will let you know how i get on...

best regards

Paul.
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Ok
I managed to get the turntable working... Trouble is, it is a little bit old now 33 years or so...so I am thinking of replacing it as where the cogs go in to the plastic base the whole seems a little warped. So It does not like going clockwise very

much.
I need to understand is there a better model out there? Or is the Hornby one still the one to go for? Is it any quieter than the old one.?
If it was just for my use I would live with it, but as it is my sons train set, i think i will have to replace

it.....

regards

Paul


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