Junctionmad

Cleaning things for soldering with IPA is really of little value , as all that happens is you partially dissolve the film and just move it around, the IPA then flash’s off and the film of dirt is now nicely distributed best just give it a rub with a file , then use Rosin cored solder. To attach the wire , or if you wish a liquid “ no clean “ flux then you don’t need any clean up

50Hz before rectification is the normal nomenclature

Looking on AliExpress I see cd-Rom motors from 1.5V to 9v which many rated at 5.9 I wonder why the OP figures they would be compatible with a 12V system ?

No reason why the GM shouldn’t be “ solid “ it’s essentially a series pass emitter follower with In some cases simple poly fuse protection, the 50 hz full wave rectification provides a degree of pulsing virtually as an aside

If you open the gaugemaster units they have about £1 of jelly bean components that you could knock up in a few minutes , it’s very difficult to see where the cost is.

DCC will run just fine over two wires connected to a simple track plan. If the wiring works on DC it will work with DCC . There are “ best practices “ etc, but the basic connection will work fine

Thanks , double disk it is

I’ll need to read that several times to understand it im quite happy that the route into the spur ( headshunt ) , would be locked out if the points were not set out to the main line , I would not expect a movement to be authorised simultaneously up the spur from the goods yard while the road from the platform loop to the spur was not put to the main. But am I not correct in assuming that once the up loop is clear , with no route into it signalled , it’s entirely possible to exit the goods yard or exit to the spur , ie where the exit road to the main is not set , but there is no route into the loop signalled , ie only the main line is clear However i I would have assumed if the train was standing at the loop starter it would be possible to both exit the goods yard to the main line or exit to the spur if not what would you suggest should happen to allow the signalling to support it. Also would you therefore suggest a splitting goods exit or a double disk ? Are you saying this arrangement wouldn’t have been used , I’d be happy to loose the ring

We have discussed this track plan before, but to put the discussion in context , heres the control panel mimic ( i hope the numbers are clear ) Mike I will change the diamonds Signal 41 is the bay that we discussed and 42 and 28 are the goods signal and the disc below it The slips are single slips , with no facing routes the + and * are placeholders for LEDS etc Im confused re the discussion about the goods exit signal , to me the arrangement makes sense of course you could argue that a double disk might be more realistic , but I like the goods exit signal !!!!. I would not agree it should be a splitting signal with two goods exit signals as the second route is not onto a main line, but I do accept in this era of largely tubular steel signals , it would have been a double disk ( I can easily retask that signal if I decide to replace it ) Its visibility makes it easy for the actual real life operators to see as well !!!. Disk 13 in the headhunt is being upgraded to a double disk Mike not sure what you mean re route " lockout " . Surely if a train is stopped at the starter in the UP loop , the exit from the goods is available , equally if a train is signalled back from the Up loop to the UP main , the route from the goods yard into the headhunt is still available !! ( via disc 28) what we call the "goods avoiding line" , ( which in the prototype was a loop with the goods shed ) , allows us to shunt while a train is standing on the UP loop platform . Its ( the headhunt ) also designed to be converted to a Branch line in the future

My justification is all tracks to that signal are track circuited I draw my perspective from the likes of this having said that I can easily mod that signal and put diamonds on each main doll

The LH road is into the headshunt and hence imho is correctly signalled with a disc at the base of the running signal. There is no further signal on that road the ringed signal is there because that route leads out onto a main running line and onwards to the up main line

I love the picture I had to zoom in to convince myself it wasn’t real. What’s the layout ?

The goods exit signal and the ground disc to be added are positioned to the eight solely because there is no space under the baseboard to the left at all. !! Sometimes real life intrudes the comment Re the rule 55 diamond on the big gantry is valid. But all tracks ( 2) leading to this signal are track circuited as was the prototype , and hence the diamond applies to both approaching tracks. If you think there’s a better way to indicate this I’m all ears

It’s too tight when we store long wagons or coaches in the sidings , and the Falcon is virtually brushing it. !!! Also to maximise bay space and signal sighting confusion , I think the gantry of the platform is a better bet.

I agree , that my current thinking

Thanks guys yes there are two routes out of the goods yard , there isa ground disk going on at the base of the goods signal to signal this move ( which is into the headshunt ) in fact because of the adjacent walk , sighting requirements would probably dictate that ground disk should be elevated up on a stub gantry ! I would have thought as a general comment that discs would be on the inside of the curve so it could be seen towards the front of a propelling train , no ? I appreciate the path of the shunter is into the V ,

This shows a similar arrangement with a single pole starter to the right and an offset gantry to the left ( it’s the same location different timeframe I think )

In the attached photo. You can see the bay starter , this position isn’t really working out as clearances are too tight and to improve clearances , id have to move the starter back towards the buffers and the bay is already short , so putting the starter behind the loco/auto coach that typically lives here I know most likely the solution would be a two doll starter one for the up loop and one for the bay. But that would mean bringing the up loop starter back and that platform is short anyway , if I just converted the up loop starter to a two doll , it would cause the bay starter to be in the wrong position as locos would foul the goods exit so I’m thinking of leaving the up loop starter as a single pole what about one of these for the bay without the modern H&S stuff of course , unfortunately the platform is narrow ( things are tight in O gauge ) and another member just fitted a water crane !!! ) but the Reading engineers can pull rank ! essentially I’m looking for “ prototype cover “ for my decision. ( ps the wrong pattern loading gauge is now gone )

I’m building the later style “ white strip “ mounted on a wooden doll thank you for the very kind offer , I would be delighted with any close up info

Just bear in mind that dcc control of accessories is “ one way “, mimic panels for example can’t determine point position by getting feedback from a point module or motor position. if you want to consider in depth control , you might want to factor in looking at layout control busses like LocoNet or MERG CBUS etc. These are proper two way layout busses there are some ancillary advantages to separate the traction control ( DCC) bus from the layout control bus

Have a search for Molex Picoblade connectors , they are about the smallest practical connector

Thanks , so the C gets exposed , was it also lit was the lamp box , the standard round size ?

The common being D in all the diagrams I’ve seen

I’m building a 7mm GWR calling on , actually two , one on a wooden post and one of a tubular post , I haven’t been able to track down a picture of the oil lamp arrangement , what I have seen is a long rectangular box behind nearly the full length of the arm , but can’t be sure this isn’t a modern rendition any help much appreciated , pictures of backs of signals arnt that common ! Dave

I did some more research and came across discussions on a Dutch and German site. The CDE interface isn’t identical to the NMRA spec as it contains the E line , emergency stop line which is not specified in the nmra spec , however it’s likely the CD lines use the NMRA spec essebtially C is DCC data D is common E is booster short circuit output indecator , pulled to D by an opto coupler used to inform command station that the booster has shorted dave