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Re: The Bridge

Postby martink » Tue Nov 21, 2017 6:04 am

I've been wondering about long-term reliability as well. Your maths seems a little out - I figure 1-2 (real) miles per day given near-continuous running. That is still impressive for any model, and I know OO modellers who are having similar issues. My main concern was actually the bearings on Ozrail's older 4-wheel wagons, but they have held up well - for Sarum, call it 4 shows or about 12 miles.
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Re: The Bridge

Postby dkightley » Mon Nov 27, 2017 5:38 pm

The Bridge continues it's run of trophy collecting...... :D :D

"Best in Show" at the Falkirk Model Railway Show....as voted by the visitors! Report to follow when I've had chance to recover from the journey back! :|
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Re: The Bridge

Postby msimister » Mon Nov 27, 2017 8:41 pm

Congrats again Doug. I'm sure the new Bridge layout will be as equally rewarded.
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Re: The Bridge

Postby dkightley » Thu Nov 30, 2017 12:05 am

Now I've recovered a little from the long weekend, I need to document a few things....

The automation system suffered its first major breakdown that couldn't be sorted out. Two of the LDR sensors failed to trigger their respective inputs into the PCB. One on the North side failed to pass its function test...and on investigation, I wasn't able to trace what the fault could be in the time I had. Whilst I was doing one of the many function tests, I noticed one of the LDR sensors on the South side also stopped working. I ran out of time and had to get the layout runnable with two trains chasing each other...which I managed just in time for when the show opened. I then had to spend the two days.....helped by Jim Rusk, who came over from Glasgow both days to help...stopping the faster train at one end of the layout for a while to create a bigger gap, then setting on its way again.

Both DMUs ran very well most of the time. The 3-car Class 170 did go through a spell where it was stuttering....but an application of track cleaning just in front of it a couple of times allowed sufficient alcohol to be picked up and clean the wheels. The 2-car Class 158 ran well most of the time..but one shell started lifting & catching on the bridge girder work. Blu-tack resolved it!

When I was trying to track down the sensor fault, I killed another signal head....which will need replacing.

No more notes....so I can comment on the show....

The show was well attended....and as expected, there were a fair number of locals who had good knowledge of the bridge and the surrounding area. Three visitors pointed out their houses...one who did the so in Glasgow...and two others. And a young lad pointed out the school he had attended up until this year. All were impressed with the accuracy and level of detail......which was reflected in the voting for the "best in Show" award....which I was told the layout was a clear winner. After the show, I was talking to one of the other layout operators ( who I know from the Tramway Museum) who had picked up two awards himself....and he was told that The Bridge was a close runner up for one of the awards he won.

A very good show...and a nice weekend away. I just need to get the issues sorted for the next show in January.....
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Re: The Bridge

Postby dkightley » Wed Jan 10, 2018 10:49 pm

Just about ready for travelling down to Stevenage. Track all cleaned, Power unit axle sets cleaned...including removal of a three inch long thread that was wrapped round and round a geared axle!

I do have one possible issue with the automation. What I originally thought was a wiring fault on the sensors turned out not to be a wiring fault as all connections were sound. After a quick email exchange with Martin, we concluded that one of the programmable ICs must have gone faulty. Fortunately, Martin had a spare chip he was able to program up at very short notice.....and I'm currently awaiting the clatter of my letter box flap telling me the PIC has arrived from Australia!! Martin posted it Express Delivery ( 2-3 working day) last Friday....so it has to arrive tomorrow!

If it doesn't arrive and resolve the issue....then I'll be disappointed, but I'll still be able to run a couple of trains on the layout....but will have to constantly monitor their progress! If it works, then with the DMU power supply mods, I should have almost trouble-free running for two days....and can concentrate on persuading visitors to give T a try!

For future shows, I might even retro-fit DCC. That is if I get any decoder chips! I'll need to either modify the output module I've already built...or create a new module. With a bit of wiring modification and a bit of electrical plumbing, I could get The Bridge working with DCC!! Now that would be awesome!
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Re: The Bridge

Postby Nutter » Mon Jan 22, 2018 10:22 pm

Doug said post it here :roll:
Second layout filmed
https://www.youtube.com/watch?v=CyXaf1rt_iA
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DON'T knock it at least I am trying to do something, with only one good hand.
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Re: The Bridge

Postby dkightley » Wed Jan 31, 2018 6:33 pm

I'm in mid-preparation for the show at Doncaster which is now just over a week away....

I've made progress on the issue with the automation I've been having. A New programmable chip eventually arrived from Australia....and having plugged it in...exactly the same!!! After a bit of further prodding around with a meter, I finally established that two of the LEDs on the control panel had stopped working. It seems the sensors were working perfectly......it was the LEDs simply not lighting when they should!!!! :twisted: :twisted: :twisted: :twisted:

New LEDs fitted....and semsors now test okay....but I can't check the functioning of the system without assembling the layout. SO.....fingers crossed for when I get to Doncaster.

I've also bought both DMUs a new set of boots! I fitted the new bogies this afternoon.....and boy do they run smooth and quiet!! :shock: You don't realise how noisy they get when things start wearing out!

Just need to clean the track and give all of the track connectors a good look over...and replace any that might start to cause assembly or running problems.

I'm looking forward to this show......as I'll have some company! Alan and Lorraine will be bringing down the TGauge.com stand...and the kind organisers have put us side by side! So now when I get the "I've never seen T gauge on sale anywhere" line form visitors, I can say "Look next door.....and buy some!!", put them in an arm lock.....and frog march them over to Alan! 8-)
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Re: The Bridge

Postby dkightley » Wed Jan 31, 2018 8:19 pm

Just added three dates to the expanding list of shows The Bridge has been invited to........a grand total now of 19 shows!!!
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