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Bath Queen Square


queensquare
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looks good Jerry. Word of warning if you have stay alives on locos the relay will not stop them. There is an answer to that using a broadcast zero generator but that involves electronickery even then it may not be quick enough not having tried one.

 

Don

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2 hours ago, Donw said:

looks good Jerry. Word of warning if you have stay alives on locos the relay will not stop them. There is an answer to that using a broadcast zero generator but that involves electronickery even then it may not be quick enough not having tried one.

 

Don

Hi Don , I did consider that.  Whilst the stay alive would allow a loco to continue rolling after the relay has tripped, as long as the loco has received the instruction to stop then the relay will prevent the loco from receiving a new instruction to set off.  I therefore think the relay is sufficient to achieve the desired outcome.

Frank

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You don't need a relay, you can "interlock" the traction and turntable supplies using a simple DPDT switch, furthermore if that DPDT switch has a centre-off position it will also provide an emergency stop facility which the relay won't. Eileen's Emporium sell suitable DPDTc/o sliding switches at just £ 1 each.

 

The procedure would be to set the switch to "track", run the loco on and stop it (to negate the stay-alive facility), reset the switch to "turn" and press the button to start the turn. When the turn is complete, reset the switch again to "track" and run the loco off. Leaving the switch set to "track" facilitates shunting moves across the table safe in the knowledge that even an inadvertent touch on the button won't start a turn.

 

Turntable.jpg.36689041d4098b3805a3e25558d9d8ca.jpg

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Gentlemen, Frank’s  circuit works perfectly and does everything I require of it, why add layers of complication. 
 

Don, as Frank says, stop the loco, turn it, drive off. Nothing else needed. Stay alives in 2mm are to get you over a speck of dirt, nothing more. 
 

Backasse, why add another switch which would only result in more complication and having to drive the table off the track bus so would require a chip.

 

Frank’s  circuit is simple, elegant, works perfectly and just requires me to press a button and the table turns . Enough said.

 

Jerry

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Great to see you earlier this evening and the turntable works beautifully.

 

We could tell that Kim was really impressed too(!!)

 

Seriously, a great piece of work and an important step towards getting Bath Queen Square running - brilliant.

 

Simon

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On 11/10/2022 at 14:45, queensquare said:

Gentlemen, Frank’s  circuit works perfectly and does everything I require of it, why add layers of complication. 
 

Don, as Frank says, stop the loco, turn it, drive off. Nothing else needed. Stay alives in 2mm are to get you over a speck of dirt, nothing more. 
 

Backasse, why add another switch which would only result in more complication and having to drive the table off the track bus so would require a chip.

 

Frank’s  circuit is simple, elegant, works perfectly and just requires me to press a button and the table turns . Enough said.

 

Jerry

 

I rather agree with you, big stay alives are not needed. The issue is more likely to occur on an exhibition layout when you may have a driver unfamiliar with DCC and unknown locos.

 

Don

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4 minutes ago, Not Jeremy said:

Well that is very good, of course what we are all really waiting for is the "panto" function.

 

Oh yes we are...


I was thinking Pano chocolat in honour of Kim’s cakes 😆

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No idea what and why you are doing it but its good to see progress on a layout. Unlike myself,  any chance of resuming modelling after a house move has been set back by discovering a leak in the bathroom needing a total refit.

 

Don  

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Huzzzahh!!

 

I'd volunteer to help you ballast, but I just can't see anything that small any more... Seriously, so good to see the "bones" of Bath taking shape, with those distinctive track formations already shouting out the location.

 

They are busy "improving" that part of the City right now, and it is becoming increasingly impossible to picture how it all used to be. I console myself with memory and my BR fire bucket rubbish bin, collected from the goods shed when everything was being finally ripped up fifty years ago.

 

Can it really be so far away in time?

 

 

 

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48 minutes ago, Re6/6 said:

 

Jerry, is that the Baron's run of double slips there? Sure looks good!


It certainly is John.

 

31 minutes ago, Not Jeremy said:

Huzzzahh!!

 

I'd volunteer to help you ballast, but I just can't see anything that small any more... Seriously, so good to see the "bones" of Bath taking shape, with those distinctive track formations already shouting out the location.

 

 

 

Thanks Simon, I’m sure I can find some jobs that you’re 1/32 eyes can cope with!

 

28 minutes ago, Donw said:

Thanks Jerry now I know where it fits in. I couldn't place quite where it fitted in. 

 

Don

 

 

 

Good to have you back up to speed again Don!

 

Jerry

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