Platform 1 Model Railway Community Home 


Welcome to Platform1mrc.com
Thank you for taking the time to browse the forum, if you would like to participate in any of the discussions.
Registration is only a click away Register Here.

 Moderated by: Toto Page:    1  2  3  4  5  6  ...  Next Page Last Page  
New Topic Reply Printer Friendly
Victoria Road
AuthorPost
 Posted: 5 Dec 2015 17:48
  PM Quote Reply
1st Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
Welcome to Victoria Road, a 60's based Scottish layout


Attachment: IMG_0014.jpg (Downloaded 572 times)

Back To Top PM Quote Reply  

 Posted: 5 Dec 2015 17:52
  PM Quote Reply
2nd Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
Victoria Road is an end to end layout, with a traverser at one end and a terminus at the other.





Attachment: IMG_0013.jpg (Downloaded 567 times)

Back To Top PM Quote Reply

 Posted: 6 Dec 2015 09:01
  PM Quote Reply
3rd Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
Probably, I should go back to the beginning..........

Returning to the hobby after a 20 year break, my meagre stock was P4 Pre-group Highland with a converted Lima Cl 20 for testing and some American H0 stock.
The P4 test plank was dug out from the loft, and was showing its age - dont suppose 20 years use as a shelf helped. The electrics - single hand held controller powered from a H&M Duette, were flackey. The boss - bless her cotton socks suggested as Christmas was fast approaching why dont I upgrade my controller, cutting a long storey short I am now the proud owner of a NCE PowerCab system. The Cl 20 was converted to DCC with a TCS decoder and ran smoothly - well impressed. Still had the problem of a simple tatty plank (S bend with a pair of B8's forming a crossover) Highland Railway Pre-Grouped wagons and a BR loco, with no sight of an HR loco appearing for some time, and wanting to get something running the seed was sown to build a small 00 gauge layout.
While visiting the local Model Railway show on the Saturday, a couple of Bachmann Jinty's took my fancy at a bargain price, along with a couple of Hornby Railroad wagon packs. The boss decided to pay the show a visit on the Sunday to see what the fuss was all about - a decision she will always regret, noticed a layout with sound (American 0 gauge, also using NCE DCC), commented that the controller was the same as mine and my loco's didnt make any sounds ...... well....... Santa came home armed with a Hornby Cl 08 sound equiped loco... its a long time from October to Christmas day to wait for Santa to complete his delivery round, I'd have been quicker using the post office - maybe not. So the pressure was on I had from mid October to December to get something running. A trip to the local model shop got points and flex - Code 100 Peco, I now remember why I started to model in P4 20 years ago... and the following track plan was built.



The bit with the ? - I have lifted and relaid this bit 3 times now, I just cant decide single or double track. Single track everything enters and leaves via the lower track, double track - trains enter from the lower track, but can only depart from Platforms 3 & 4, giving rise to empty coaching stock movements. Without a run round a station pilot is required.
I like seeing elevated railways cutting across roads glimpsing views between buildings, so I made the decision to build the layout elevated. Also cluster of points straddle the base board joints, so I made the whole unit removable.

Attachment: Victoria Road Track plan.png (Downloaded 571 times)

Back To Top PM Quote Reply  

 Posted: 6 Dec 2015 09:06
  PM Quote Reply
4th Post
Ron
Moderator


Joined: 5 Dec 2015
Location: Newark On Trent, United Kingdom
Posts: 2127
Status: 
Online
Yes, what next??:cool:



____________________
Lincolnshire Yellowbelly
Flickr address: https://www.flickr.com/photos/ron_777/
Back To Top PM Quote Reply

 Posted: 6 Dec 2015 09:34
  PM Quote Reply
5th Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
The final decision was made to use the layout as a single track, by the purchase of a couple of DMU's - dont see many empty stock movements of DMU's from one platform to the next.

Now that I had this DCC thingy, I decided that all points etc should be controlled by the system. Looking at accy decoders, all around £40 each (to operate 4 point motors), and I needed to control 6 motors, this wasn't going to happen. Browsing around I came accross the MERG site. (Model Electronics Railway Group).

http://merg.org.uk/

They produced kits which are sold to members, 1 years membership, plus 2 dcc accy decoders (with inbuilt CDU) came to £37, less than the cost of a single ready made unit, so game on.

These units also took power from a separate 16V AC supply, a great advantage for me as I use a NCE PowerCab, which only outputs 1.5A, so being able to power devices away from the track bus is a bonus.

I only have 4 points on the layout, 1 x 3way, 1 x dbl slip & 2 x standard points using 6 point motors, I could easily remember which point was which, but visitors had nae chance, fortunately I had stumbled across JMRI and DecoderPro to help set up and backup my DCC loco decoders, part of the JMRI system is PanelPro, which is designed to operate the layout.

http://jmri.sourceforge.net/

Now were cooking, a track plan with clickable points, route selection to provide route setting via a single mouse click or tablet button press, simples........ well there was a steep learning curve, but it was worth it, and will be covered in upcoming posts.

The fiddle yard is now a traverser, originally a sector plate, then a traverser using bales catches for alignment, ok but not good, so I decided to motorise it using stepper motors, initially controlled by a Raspberry Pi, but the motor and controller took over 30 seconds to move between tracks, so a potential 5 min to move from track 1 to 6. So this was replaced with an arduino based system, and it worked :cool:

This was my first attempt at using arduino, so took best part of a year to complete and a lot of asprin :whatever:.
But was still a manualy controlled system from its own panel, I wanted to be abel to control the traverser via DCC, lots more head banging later and we have.... drum roll please maestro

https://www.youtube.com/watch?v=BZBaNMiSa2c

I will try and produce separate write ups in the appropriate sections later.

Paul

Back To Top PM Quote Reply  

 Posted: 6 Dec 2015 09:48
  PM Quote Reply
6th Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
Victoria Road is approx 11ft long by 2ft wide, but is at least indoors - Dundee in the winter is wet and cold, actually its the same in summer as well.

Just to give a rough idea of the layout, here's another short vid.

https://www.youtube.com/watch?v=VoIHlUKxzwE

Paul

Back To Top PM Quote Reply

 Posted: 7 Dec 2015 01:55
  PM Quote Reply
7th Post
mattc6911
Guest
 

Joined: 
Location:  
Posts: 
Status: 
Offline
Great story so far Paul, looking forward to the next updatehttp://www.click
   Cheers   Matt

Back To Top PM Quote Reply  

 Posted: 7 Dec 2015 19:45
  PM Quote Reply
8th Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
As its late this'll be quick .....

Back to the Traverser



The final version is shown above.
The dog leg on the rear 3 tracks is to allow the traverser fit into the window opening, as the traverser extends beyond the rear of the layout.

The drive mechanisim is a separate sled arrangement, with two lengths of 6mm screwed rod, passing through T nuts attached to the traverser to provide drive. They effectively act as a worm & wheel, which prevents movement when not being driven.
Why 6mm screwed rod, well the thread pitch of 6mm is 1mm per rev. making the maths simpler...... nah it didn't. If I were to start again I would use 8mm screwed rod, as it would be a little more sturdy.

I had a refurb kit for a roller blade - not mine the kids, but that contained as set of 22x8 bearings (8mm raises its head again), so I used a piece of 8mm OD, 6mm ID ally tube as a spacer, and held captive by a pair of nuts ( affectionately known as Matt and Tom)



The woodern frame had blind holes drilled with a forstner bit to hold the bearing.


Giving the drive assembly.

Tune in same place tomorrow for the next installment

Paul

Back To Top PM Quote Reply

 Posted: 7 Dec 2015 19:46
  PM Quote Reply
9th Post
Toto
Founder


Joined: 4 Dec 2015
Location: Edinburgh, United Kingdom
Posts: 7952
Status: 
Online
Great video Paul. The view through the buildings with the trains running past is very effective. A different take on the usual scenes where everything is in view all the time.

Like it ...... Like it ........ Like it.
Toto



____________________
Sometimes I wish the world was full of Norman Wisdoms. Chaotic ......... Yes, but a world where the sun shines on everyone
Back To Top PM Quote Reply  

 Posted: 8 Dec 2015 02:27
  PM Quote Reply
10th Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
Morning Toto
You're easily pleased then, only issue is I need more buildings to shoot between.Time to sharpen the knives as well as the pencil.
Ah well, time for work
Paul

Back To Top PM Quote Reply

 Posted: 8 Dec 2015 03:18
  PM Quote Reply
11th Post
Ron
Moderator


Joined: 5 Dec 2015
Location: Newark On Trent, United Kingdom
Posts: 2127
Status: 
Online
Got to agree with Tom on this one, good work Paul :)
Cheers
Ron



____________________
Lincolnshire Yellowbelly
Flickr address: https://www.flickr.com/photos/ron_777/
Back To Top PM Quote Reply  

 Posted: 8 Dec 2015 16:17
  PM Quote Reply
12th Post
Gary
Moderator


Joined: 5 Dec 2015
Location: Sydney, Australia
Posts: 3298
Status: 
Offline
Looking good Paul. :cool: ...and a great introduction to Victoria Road.

I do like the video where the loco and coaches are passing behind the buildings, very effective indeed.

Cheers, Gary.



____________________
Industry Lane : http://www.platform1mrc.com/view_topic.php?id=90&forum_id=7

Jay Dubyew Nth Yard : http://www.platform1mrc.com/view_topic.php?id=632&forum_id=7

Linden Ford : http://platform1mrc.com/view_topic.php?id=145&forum_id=8
Back To Top PM Quote Reply

 Posted: 8 Dec 2015 19:37
  PM Quote Reply
13th Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
For once I can claim the between houses view as a deliberate design feature, and its also at the viewing height for me sitting in my computer seat - non of this armchair modelling, I'd only see the underside of the base board

Attachment: IMAGE$34F15365C459F178.gif (Downloaded 545 times)

Back To Top PM Quote Reply  

 Posted: 8 Dec 2015 20:11
  PM Quote Reply
14th Post
paul_l
Moderator


Joined: 5 Dec 2015
Location: Dundee, United Kingdom
Posts: 4184
Status: 
Online
Ok where were we

The base was made, the traverser is supported on computer desk keyboard linear slides - doing this again I would use drawer slides, screwed onto woodern supports.

Next the motors

Mk1 Raspberry Pi + stepper motor shield + 2 x geared stepper motors
Cost R/Pi £28, stepper motor shield + 2 motors £12 total £40



plus a pair of 6mm / 5mm universal couplings £5 the pair)



It worked but took 5 min to move between tracks, so take upto 30 min to move from track 1 to 6.

A change of tack was needed, so I changed to an arduino + sparkfun Big Easy Driver stepper controller and a nema17 stepper motor.

It worked , speeds was considerably faster, I just had to learn how to program it.
Mk2 had an LCD display plus rotary switch to select the track and a push button to activate the move.

Built initially on a bread board.



https://www.youtube.com/watch?v=o8K0rx6--lU

This was extensively tested - read I played trains a lot :)

But there were issues, by driving only one the screwed rods the traverser tended to go squint towards then ends of the stroke, and would stall. So I looked at running two motors, built the circuit, and was writing the program, when Morag was admitted into hospital to change her medication, what was supposed to be a week to 2 weeks ended up being 8 weeks. However this forced break gave me time to rethink the drive, and I modified it to being a single motor with a GT2 drive belt linking both screwed rods.

5mm bore 20T pulleys were tapped M6



and threaded on to the screwed rod







hooked up to the bread board and tested





I found I also had to increase the input voltage, I was using 16V, but could still stall if the traverser was full, increased to 20V but still happened occationally, eventually I used an old HP printer power supply 32V and result http://www.click

The big easy driver can handle input voltages from 9V to 35V, and will also provide a 5V out for the arduino.

Now that the circuit was stable, the final step was needed, I wanted to be able to control the traverser from the NCE handset, or via the JMRI software, so a DCC interface had to be built......

Da Da Daaarrrrr - tune in for the next installment.

Paul

Back To Top PM Quote Reply

 Posted: 8 Dec 2015 20:43
  PM Quote Reply
15th Post
Toto
Founder


Joined: 4 Dec 2015
Location: Edinburgh, United Kingdom
Posts: 7952
Status: 
Online
Keep it coming Paul........ This'll get me to sleep,:thumbsup:
Only joking
Toto



____________________
Sometimes I wish the world was full of Norman Wisdoms. Chaotic ......... Yes, but a world where the sun shines on everyone
Back To Top PM Quote Reply  

Current time is 07:47 Page:    1  2  3  4  5  6  ...  Next Page Last Page    
This topic is:  Home Page > Platform 1 Model Railway Community > Model Railway Layouts > Members Personal Layouts > Victoria Road Top





about cookie files used by this web site

UltraBB 1.172 Copyright © 2007-2016 Data 1 Systems