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through the looking glass


Chrislock

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My last entry perhaps came over a bit more glum than I intended, giving the impression that I was abandoning 2mm rather than just having a break for a while to give my eyes a rest! So am adding this one to balance things out a little!

Firstly, as I indicated I have been tweaking my little 2mm goods engine and am pleased to report that it is now running more smoothly, having traced the cause of the intermittent the short to a frame catching a crank.

 

I also mentioned that I have been having a go at building some C+L finescale points using code 75 bullhead .

My experience of constructing 2mm turnouts has been of good use in this process.

 

Just a quick resume of my method, as I'm not sure I have mentioned this before, and which I have used for the 4mm turnouts.:

 

First a template is printed off Templot.

Second, the sleepers are measured and cut to size. With copper clad obviously the isolation cuts are made also.

The sleepers are then stuck to the template with pritt stick.( This holds them very nicely while glueing/ soldering, and peels off the template easily on completion, with a little water if required.)

Outer rails cut and fitted using the templates as a guide. Gauges / plain track used to check gauge.

V crossing constructed - I have used the association jigs and gauges; but also just used the Templot template as a guide - both seem to work as well as each other.

Switch rails filed and added again using the template as a guide.

Then a temporary pcb tie bar is attached to allow the turnout ot be tested more easily by rolling a wagon through. When happy, the check rails are added.

 

Using this method I can build a working turnout comfortably in an evening if I so choose, although with the glued points I like to leave time for the Butanone to dry thoroughly.

 

I have used the same construction method with a 3 way point in 2mm, but that is the limits of my experimentation.

Of course, I have not added chairs to the 2mm points, which would improve their appearance but be extremely fiddly..

If I were planning a sizeable new layout I would need to get to grips with Templot to learn how to print off the complete track plan for better transition.

 

I have found the C+L turnouts ( all Butanone) relatively straightforward, and because of the increased gluing area compared to 2mm scale, have found the completed turnout strong enough not to add any soldered sleepers, even where a chair has been trimmed for clearance.

Whether I still think this after fixing them down and running the loco over a few times remains to be seen!

 

 

Something in the C+L instructions which I completely endorse - point building should be enjoyed.

 

 

Regards,

Chris

 

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"Something in the C+L instructions which I completely endorse - point building should be enjoyed."

 

​ Totally agree,Having just made two B6 turnouts for my new project I can honestly say I really enjoyed making them.

It's very satisfying to see stock running through your home brew track and points and saying to yourself "I did that"

 

 

Cheers!

Frank

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Good work Chris. In the larger sizes the chairs get a better grip on the rail. In 7mm you can trim quite a bit off the chairs. The trouble with the 2mm easitrac chairs is that the chair can open and release the rail under stress. However once you have got a few of them glued they hold the rail.

Don

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It is also easier to cut a chair in half and add a cosmetic half-chair to complete the look.

 

To construct a 4mm turnout in this way using C+L components is considerably more expensive than a (glued) easitrac one ( £9,30+rail as against £4.50*+rail by my reckoning). However, you get more for your money in terms of material in 4mm.

 

I switched over to simple soldered turnouts for the advantage of strength and durability, so I can't say how strong easitrac abs sleepered points are once gued down. I do know that the couple I did make are almost impossible to adjust once down if anything shifts, whereas the soldered variety are relatively easy to tweak.

 

I find it is easier to get the 4mm points right from the off, as eveything is easy to see, and you can get a scalpel under a chair without breaking it if necessary.

 

Still I guess that's part of the challenge of working in a small scale. It does appear a lot easier to get things working well in 4mm. My wagon rolls smoothly through all 3 points I've made so far. One of them uses a C+L v-crossing assembly I picked up at AP show recently, though at £13,50 each, I won't be using another!

 

 

Regards,

Chris

 

*Providing you avoid the expensive milled bases of course, and you need to add a few pcb sleepers for strength.

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Those are great-looking points, Chris. Thanks for noting down the main steps, I look forward to getting to this point (sorry!) myself.

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I'd second Chris's comments re soldered versus C&L. I've got concerns about the long-term viability of solvent-based joints in any case. My preferred approach in 4mm is solder + cosmetic chairs - although that can be quite long-winded!

 

In 2mm I'm relatively happy with soldered joints alone - once painted-over you have to be close/a rivet-counter to notice the lack of chairs.

 

Nice pointwork Chris - I like the three-way.

 

Regs

 

Ian

 

 

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The only point I'd make with pcb construction is to cut the insulation gap on *both* sides, against the rail flange. Not quite so noticeable as a centre cut - and a 'belt & braces' approach!

 

Regs

 

Ian

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The only point I'd make with pcb construction is to cut the insulation gap on *both* sides, against the rail flange. Not quite so noticeable as a centre cut - and a 'belt & braces' approach!RegsIan

 

I just tend to fill the centre cut by rubbing over some filler, then once painted it is nigh on invisible. Also the fewer cuts as possible is my order of the day!

Also I'm hoping that the 4mm points will be servicable enough in the context I'm using them. The only thing I've needed to do is to add some cyano here and there to strengthen and prevent the rail from sliding through the chairs.

 

But, as they say, points taken... :blush thingy:

 

What I still have to get to grips with is a good method of tiebar construction.

For the modest shunting board I'm planning, I will stick with Cobalt motors ( I have 3 spare which is exactly enough). I just have to reconcile somehow using an 04 on a Norfolk single line ex GER working...

Anyone happen to know the weight/loading comparison between an 04 and a Claude Hamilton 4-4-0.......!

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Those are great-looking points, Chris. Thanks for noting down the main steps, I look forward to getting to this point (sorry!) myself.

 

Mikkel - they are actually quite easy to produce if you haven't had a go, someone of your skills would find it very straightforward. I made the first by pinching some rail from a cut section of flexitrac and using the £9.30 point kit sleeper set.

The second used one of the pre formed V's - extravagant but worth trying.

The third as the first, but this time I ordered 10m of bullhead with the kit!

 

 

All three work like a dream!

Regards,

Chris

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