Search found 565 matches

by Colin Parks
Tue Oct 23, 2018 9:56 pm
Forum: Product Information
Topic: Chairs and Rail
Replies: 17
Views: 926

Re: Chairs and Rail

Re. the profile of the rail head as in the above pictures: Now, I am no engineer, but if Hi-nickel rail has a head profile which is incompatible with the profile of P4 wheels (i.e. too square-headed), would that not make a P4 profile wheel ride up on the root radius of its flange when the wheel is r...
by Colin Parks
Thu Oct 18, 2018 8:54 pm
Forum: Standard Gauge Workbench
Topic: Arlington Colliery
Replies: 12
Views: 1674

Re: Arlington Colliery

Hello Rob, the colliery is looking great and the contrsction of the trackwork so quickly developed.

You are going to need more than that one wagon!

Colin
by Colin Parks
Thu Oct 18, 2018 8:48 pm
Forum: Product Information
Topic: Chairs and Rail
Replies: 17
Views: 926

Re: Chairs and Rail

Le Corbusier wrote:
Colin Parks wrote: The common factor was C&L Hi-Nickel Bullhead rail (and yes, it was the right way up!).


Nah ... mine was steel rail :thumb


Ah yes. Bang goes that theory then!

Colin.
by Colin Parks
Thu Oct 18, 2018 8:47 pm
Forum: Product Information
Topic: Chairs and Rail
Replies: 17
Views: 926

Re: Chairs and Rail

This is something disussed on a thread of mine while back. Despite appearances at the threading stage, the rail and chairs have gone down perfectly well onto plywood sleepers, with no subsequent problems - pretty much what Tim has said. The tightness was the same for both C&L and Exactoscale S1...
by Colin Parks
Thu Oct 18, 2018 3:49 pm
Forum: Product Information
Topic: Chairs and Rail
Replies: 17
Views: 926

Re: Chairs and Rail

This is something disussed on a thread of mine while back. Despite appearances at the threading stage, the rail and chairs have gone down perfectly well onto plywood sleepers, with no subsequent problems - pretty much what Tim has said. The tightness was the same for both C&L and Exactoscale S1 ...
by Colin Parks
Mon Oct 15, 2018 9:39 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame musings
Replies: 31
Views: 2526

Re: Mk2 Lever frame musings

Ah, perhaps I should consider acrylic spray can colours rather than enamels. I did watch the youtube video of the Exeter West simulation. That signalman was treating the frame much more gently than the guy testing this frame's mechanical locking: https://www.youtube.com/watch?v=Vw5dcI01kNo Presumabl...
by Colin Parks
Mon Oct 15, 2018 12:50 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame musings
Replies: 31
Views: 2526

Re: Mk2 Lever frame musings

Dave, Thanks for finding the information on lever numbers. Even knowing they were on the DCC Concepts website, it took me a while to find them! Howard, Love the picture of production line painting! I shall follow your method, but use an airbrush rather than spray cans to apply the paint, which I was...
by Colin Parks
Mon Oct 08, 2018 2:30 pm
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 855
Views: 62103

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

Hello Tim,

One thing re. point 9 of your observations on the effect of MEK on styrene: use Humbrol Liquid Poly instead. (It has to be the Humbrol-branded solvent, there is another similarly named product.)

All the best,

Colin
by Colin Parks
Sat Oct 06, 2018 4:34 pm
Forum: iak
Topic: Grampus stock naughtiness...
Replies: 19
Views: 3021

Re: Grampus stock naughtiness...

The 'initial' Grampus looks great Ian! Just how many more are there to come?

All the best,

Colin
by Colin Parks
Fri Sep 28, 2018 2:56 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame musings
Replies: 31
Views: 2526

Re: Mk2 Lever frame musings

Hello Howard, Praise indeed! The locking frame will be a great challenge, which I am hoping to assemble to the point where the frame can be used to operate the switches, while I come to terms with the ins and outs of locking nibs and so on. In G A Pryor's book 'Southern Railway Signals', there are v...
by Colin Parks
Tue Sep 25, 2018 4:52 pm
Forum: Signals and Control Systems
Topic: Mk2 Lever frame musings
Replies: 31
Views: 2526

Re: Mk2 Lever frame musings

It seemed best to put some photos here to show the stage that I have reached with my four lever frame assemblies. All the levers have finally been made. They fitted without more than the odd swipe with a needle file here and there. It is very satisfying just to operate the levers, which locate at ea...
by Colin Parks
Mon Sep 10, 2018 4:20 pm
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 855
Views: 62103

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

Protocab sounds easy the way you explain it Tim! Re. the video: imagine if we spent time every day checking our PW. There would be fewer faults! I forgot to say how convincing your working point rodding is. It will save a great deal of sub baseboard work if you can get the rodding to function effect...
by Colin Parks
Mon Sep 10, 2018 4:15 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 196
Views: 14598

Re: Brimsdown-The last grand project.

Hello Tony, Thanks for posting your Templot plan. I will have look at it later. The fact that you are only 1" out on the dimensions of such a large project seems quite acceptable. There is that person up in Scotland modelling Kings Cross and in an article he said the builders had made the inter...
by Colin Parks
Sun Sep 09, 2018 9:35 pm
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 855
Views: 62103

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

Hello Tim,

Re. my comment on r/c and batteries, maybe I have misunderstood the way in which Protocab works. I thought that the locos used battery power in that system.

All the best,

Colin
by Colin Parks
Sun Sep 09, 2018 1:23 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 196
Views: 14598

Re: Brimsdown-The last grand project.

Hello Tony, That all seems very complicated, but you have come around the full curcuit of boards with a remarkable degree of accuracy by the looks of it. In the picture of the boards which cover your designated 'flat area', is that going to be the fiddle yard side? Perhaps in due course, you will mo...
by Colin Parks
Sun Sep 09, 2018 1:15 pm
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 855
Views: 62103

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

Hello Tim, The track weathering looks very good. What paint are you using for the rails? I have some Precision Paints 'Dark Rust' but it still looks a little orange in comparison with your colour. Re. the ballast train, is your chosen loco going to have enough space for the r/c equipment and battery...
by Colin Parks
Thu Sep 06, 2018 9:26 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 610
Views: 43573

Re: Construction of a Test Track

A few process photos of the lever frame levers being fitted with piano wire drive pins. Needless to say I deviated from the instructions, having a slight concern that soldering a 1.4mm dia. rod into a 1.4 mm dia. hole would not allow sufficient space for the solder to flow. so I used a subtly over-s...
by Colin Parks
Thu Sep 06, 2018 8:22 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 610
Views: 43573

Re: Construction of a Test Track

Thanks Tim. I think I have missed a few updates on your Monsal Dale topic, so will have look through that later.

All the best,

Colin
by Colin Parks
Thu Sep 06, 2018 6:55 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 610
Views: 43573

Re: Construction of a Test Track

Hello Barry, After a rather unfortunate chest infection, seven days in hospital and convalescence I have just got around to posting a reply. The [outdoor] temperature range in Mid-Wales could now be said to be from -20 to 34C. The temperature range in my workshop where the test track resides is in t...
by Colin Parks
Fri Aug 10, 2018 9:50 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 610
Views: 43573

Re: Construction of a Test Track

Good point Tony!

Guy Williams was quite self-effacing when I met him and saw his Pendon locomotives on display at a Bristol show. But once mastered, his rolling/bending technique definitely stood him in good stead for all those fine models he produced.

Colin
by Colin Parks
Fri Aug 10, 2018 9:44 pm
Forum: Vehicle dynamics and trackholding
Topic: Do we need 1:20 Rail Inclination
Replies: 38
Views: 2114

Re: Do we need 1:20 Rail Inclination

Well, if Tony says the inclination on his track is minmal or with none at all that is good enough for me! I suspect that the Hi-nickel bullhead rail that I have been using has too square a head profile to make any benefits of inclination null. Has anyone in an attempt to be 'getting it all right' (a...
by Colin Parks
Fri Aug 10, 2018 9:33 pm
Forum: Layouts and Operations
Topic: South Pelaw Junction
Replies: 41
Views: 8047

Re: South Pelaw Junction

Hello John,

The bridge is looking very convincing. The effort you have put into the texture of the stonework has certainly paid off.

All the best,

Colin
by Colin Parks
Wed Aug 01, 2018 8:37 am
Forum: Layouts and Operations
Topic: South Pelaw Junction
Replies: 41
Views: 8047

Re: South Pelaw Junction

That sounds like a wise move John. There was/is a whole team involved in constructing the EM version of South Pelaw, it would take a very great effort to complete a project of that scale on your own. Then there is all the stock that you require. Even in 1971, there must have been quite a few trains,...
by Colin Parks
Tue Jul 31, 2018 5:30 pm
Forum: Layouts and Operations
Topic: Construction of a Test Track
Replies: 610
Views: 43573

Re: Construction of a Test Track

When I was at Pendon this weekend, I was told that Guy Williams used to roll up taper boilers in this way, the seam finished at a perfect joint for soldering. When onloooking tutees gasped in amazement and asked "how did you do that?" his response (as one would expect of a retired Headmas...
by Colin Parks
Tue Jul 31, 2018 5:22 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 196
Views: 14598

Re: Brimsdown-The last grand project.

Hello Tony, Would I be right in saying that Sundela board is what used to be known (in the 70s) as soft board or fibre board? It looks like it. Back in the day, I had some base boards made with that material and even with coarse scale 00 gauge track there were problems - never again! I admire your t...

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