Search found 211 matches

by abenn
Wed Jun 12, 2019 8:22 pm
Forum: DCC Forum
Topic: Best way to wire up test track?
Replies: 7
Views: 173

Re: Best way to wire up test track?

Lenz is the only system I know, and it has a socket on the back of the control unit for programming purposes. So, a piece of track with two wires soldered to it, and a plug on the end to go into the programming socket, is the simplest way for me. It goes in a drawer when I'm not using it. With diffe...
by abenn
Sat Jun 08, 2019 8:17 pm
Forum: N Gauge Model Railway
Topic: Help
Replies: 1
Views: 90

Re: Help

From Wikipedia: " United Kingdom The standard height for platforms is 915 mm with a margin of +0,-25 mm.[5][14] On the Heathrow Express the platform height is specified at 1,100 mm (43.3 in) .[15] High Speed 2 is expected to be built to dimensions conforming to the European Union technical stan...
by abenn
Fri Jun 07, 2019 8:47 pm
Forum: DCC Forum
Topic: Best way to wire up test track?
Replies: 7
Views: 173

Re: Best way to wire up test track?

How long do you want your test track to be? I use a loose piece of track about 18" long, with wires permanently soldered to it, with the appropriate plug for plugging into my Lenz controller's programming socket. Anything more than programming, and a short forward/backward test, I do on my layo...
by abenn
Thu May 02, 2019 9:35 pm
Forum: N Gauge Model Railway
Topic: Advice and help plz
Replies: 11
Views: 423

Re: Advice and help plz

I moved from OO to N-gauge a few years back and, using Peco code 55 flexible track and electrofrog points and crossings I've never had a derail since I corrected the gauge of the front bogie on one of my Dapol locos. One key to reliable running is, of course, to have a good solid base for the track;...
by abenn
Sat Mar 23, 2019 8:45 pm
Forum: N Gauge Model Railway
Topic: Moving from 00 to N
Replies: 13
Views: 885

Re: Moving from 00 to N

I converted from 00 to N-gauge a few years back, so that I could get more-realistic train lengths and track curves within my limited table area. I also switched at the same time from analogue DC control to DCC and, contrary to fourtytwo's experience, I've found it to be an eye-opener! In particular,...
by abenn
Sat Feb 09, 2019 8:45 pm
Forum: Dapol
Topic: Dapol semaphore signals
Replies: 29
Views: 2764

Re: Dapol semaphore signals

I suspect that they built the prototype and then realised that the (white) LED would not work on 3.3V since its forward voltage is higher than that. They should of course have used a yellow LED to get proper oil lamp colour which could run from 3.3V with a resistor. White LEDs that I have experienc...
by abenn
Sat Feb 09, 2019 8:06 am
Forum: Dapol
Topic: Dapol semaphore signals
Replies: 29
Views: 2764

Re: Dapol semaphore signals

. . . . You should be able to operate the signal on a voltage as low as 6V DC if required to reduce the brightness to sensible levels. While the LED is run from the supply voltage via a 820R resistor, so brightness is dependant on supplied voltage, the 'works' is powered via a 3.3V regulator, so an...
by abenn
Fri Feb 08, 2019 8:03 pm
Forum: Dapol
Topic: Dapol semaphore signals
Replies: 29
Views: 2764

Re: Dapol semaphore signals

Most of the posts I read in the link were quite old, so maybe Dapol have improved the reliability now. I suppose, if the worst comes to the worst, I could remove Dapol's actuator and electronics and somehow attach a standard servo, of the type I've used for all my points.
by abenn
Fri Feb 08, 2019 11:11 am
Forum: Dapol
Topic: Dapol semaphore signals
Replies: 29
Views: 2764

Re: Dapol semaphore signals

Yes, the light was quite bright enough (too bright?) on 9v DC. It stands to reason the lower voltage -- so long as it's enough for the signal to work -- should cause less heat, so 9v DC is what I'll use for both my signals, in the hope that they'll last longer than those of many contributors to the ...
by abenn
Thu Feb 07, 2019 8:42 pm
Forum: Dapol
Topic: Dapol semaphore signals
Replies: 29
Views: 2764

Re: Dapol semaphore signals

I recently purchased a single Dapol N-gauge home signal from Hattons, and connected it to 9v DC. The leaflet says " We recommend using a 12vDC stabilised power supply. ", and the wiring diagram says " 14vAC OR 9-12vDC ". I've got a 9v line for other electronics on my layout, so I...
by abenn
Tue Jan 29, 2019 9:18 pm
Forum: Real World Railways
Topic: How do Spanish trains stay on the rails?
Replies: 7
Views: 320

Re: How do Spanish trains stay on the rails?

Well, I've had a good look at the internet Talgo postings, and I get the general idea that the wheels are positioned by computer (and mechanical linkages presumably) to run at the optimum position on the rail. But they seem to be protecting their patents by not putting much detail on the internet :(...
by abenn
Mon Jan 28, 2019 11:32 am
Forum: Real World Railways
Topic: How do Spanish trains stay on the rails?
Replies: 7
Views: 320

Re: How do Spanish trains stay on the rails?

Thanks Bigmet. I'll check out what the internet has to say about 'Talgo'.
by abenn
Mon Jan 28, 2019 10:44 am
Forum: Real World Railways
Topic: How do Spanish trains stay on the rails?
Replies: 7
Views: 320

How do Spanish trains stay on the rails?

Watching a TV programme recently -- Chris Tarrant I think -- there was a bit showing how Spain's high-speed trains have independent wheels, rather than pairs of wheels on a solid axle. I've always understood that the solid axle keeping the wheels turning as one, combined with the slight bevel on the...
by abenn
Sat Jan 12, 2019 8:45 pm
Forum: Real World Railways
Topic: How were semaphore signal posts fixed?
Replies: 5
Views: 201

Re: How were semaphore signal posts fixed?

Modern signals are certainly installed the way you describe Mountain, with the concrete bases sometimes a significant height above the ballast. At the moment I'm starting with a couple of Ratio GWR lower quadrant semaphore signals, and they come with a large circular base which I don't think replica...
by abenn
Sat Jan 12, 2019 11:03 am
Forum: Real World Railways
Topic: How were semaphore signal posts fixed?
Replies: 5
Views: 201

Re: How were semaphore signal posts fixed?

Thanks for the replies. The real reason for my question (which I perhaps should have clarified in my OP) is to know whether or not I need to show the top of a concrete base, or simply ballast right up to and around the post. It's not clear in any of the photos I've been able to find on the internet,...

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