Search found 595 matches

by Julian Roberts
Thu Dec 06, 2018 5:12 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 237
Views: 20507

Re: Brimsdown-The last grand project.

You're a true master Tony! Thank you for your answer. Can I clarify - you make two Templot copies, one is the master and another, in small sections, on which you construct the track panels and pointwork? It would cut out some stages to lay the track after its construction on the master template havi...
by Julian Roberts
Fri Nov 30, 2018 2:06 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 237
Views: 20507

Re: Brimsdown-The last grand project.

Tony I am wondering if I have missed something in which case perhaps you could refer me back to where you covered it. You started with a Templot design but here you effortlessly lay this graceful curving formation without a smidgeon of a template in evidence - as far as I can see! How do you do that...
by Julian Roberts
Fri Nov 30, 2018 9:54 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

Mike G - Thank you! Really nice! The photo of course puts into perspective how much these things matter...or not! Another aspect of how visible any compromise is, is how it is painted. The blacker the framing the less noticeable, but if it's weathered to an almost orange as in the real A1 photo I pu...
by Julian Roberts
Thu Nov 29, 2018 9:47 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

Of course this does give more better control over the interaction between the wheel rims and frame cut-outs which may be of interest to Julian. Yes! Is this the Scot you mean, Mike G? If so, again, in relation to the present discussion what I'd be concerned about if making it (and I have been rash ...
by Julian Roberts
Wed Nov 28, 2018 5:16 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

Which is the point about modelling in P4 isn't it, as it reduces, but does not eliminate, the need for modelling compromises. If we model scale flanges and the carrying wheels cleared the frames on the original then we should be able to do it on the model. If they didn't then either you don't use s...
by Julian Roberts
Mon Nov 26, 2018 5:59 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

... I'm not sure arraging for for your loco to lift its front drivers will prove operationally satisfying, Quite. So the logical conclusion for me at least is that the suspension on the driving wheels only, that we hoped would be adequate (with trailing wheels just going for the ride), has to be re...
by Julian Roberts
Sun Nov 25, 2018 6:23 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

I have come to the conclusion that there is almost never any practical purpose in getting pony truck wheels to carry any of the loco's weight, we don't have the axle weight constraints that the prototype has to live with and made such things necessary. Then the amount of side movement needed, and w...
by Julian Roberts
Fri Nov 23, 2018 7:34 am
Forum: Steam Locomotives
Topic: Bogie and pony wheel swing calculator
Replies: 5
Views: 822

Re: Bogie and pony wheel swing calculator

Mike I was relieved (and grateful!) to see no less an authority than Keith give exactly the answer that I was going to do. What I can't, after further thought, get my head round is this. My first 0-4-4 wouldn't get round a 4ft curve when the bogie pivot was as designed centrally above the bogie. The...
by Julian Roberts
Thu Nov 22, 2018 9:06 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

Will I fully see what you mean re CSBs and thank you for your offer about the bias. We were discussing this on the J50 thread and it's likely Chris Gibbon will bring out his CSB only chassis for that loco by the Spring (haha pun). I saw him at the Newcastle show the other day and he said someone is ...
by Julian Roberts
Tue Nov 20, 2018 8:21 am
Forum: Steam Locomotives
Topic: Some North Eastern Locomotive Builds
Replies: 73
Views: 4624

Re: Some North Eastern Locomotive Builds

The downside of the T1's weight, which I though might be premature motor/gearbox wear, has turned out to be nothing. And I absolutely agree with you that a heavier model does appear to move with much greater 'assurance' than a lighter one. Both of the Bachmann J72 rebuilds were weighted to more tha...
by Julian Roberts
Mon Nov 19, 2018 7:19 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

:thumb :D :thumb

Bog...weathered black!
by Julian Roberts
Mon Nov 19, 2018 5:58 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17592

Re: Crab Comet conversion

I don't like making superfluous posts on the Forum. It is selfevident that progress on my Crab has been interrupted. Having said that, I might as well explain. This is caused by ordinary life, including a resolution to keep reasonably fit and make the best of the uncharacteristically summery summer ...
by Julian Roberts
Mon Nov 19, 2018 3:28 pm
Forum: Steam Locomotives
Topic: Some North Eastern Locomotive Builds
Replies: 73
Views: 4624

Re: Some North Eastern Locomotive Builds

Superb T1 Mike, as are all of your locos. Thank you for your weathering recipes. I like the subtlety yet effectiveness of the results. What a privilege to have worked with Guy. Did you learn more things in principle from him than we read in his books would you say? In the context of creating the ill...
by Julian Roberts
Sun Nov 18, 2018 10:12 pm
Forum: Steam Locomotives
Topic: Some North Eastern Locomotive Builds
Replies: 73
Views: 4624

Re: Some North Eastern Locomotive Builds

Mike may I too thank you for your inspirational thread. I followed your link to ArthurK's thread and that was also most interesting. Just a question - how do you create the weathered/grime/oil effect on your painted locos coupling and connecting rods? I suppose you have no plans to model an 0-8-0T Q...
by Julian Roberts
Fri Nov 16, 2018 12:20 pm
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Absolutely, Will, regarding the pivot etc. As a matter of disclosure (!) the model was made by Don Rowlands so I shouldn't claim the bogie idea is mine. What I'm thinking about is Knuckles' A1 and how the bogie will swing without excessive clearance. Here are some pix that show the difference betwee...
by Julian Roberts
Thu Nov 15, 2018 9:55 am
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Knuckles, regarding the mention of an articulated chassis previously, I don't understand without reading the MRJ article what that can mean with an 0-6-0. But to in a sense articulate the chassis is the way to make bogie etc wheels able to swing far more than the real thing. If you look at this page...
by Julian Roberts
Wed Nov 14, 2018 1:17 pm
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Hi Knuckles , glad the radius is slightly easing and diamond simplifying. Just quickly to say, there is some mistake, I haven't made any Black 5, Will Litchfield was saying in his thread that in THEORY(!) a Black 5 would get round that curve. The problem of the bogie in the Barrow thread illustrates...
by Julian Roberts
Sat Nov 10, 2018 5:50 pm
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Knuckles I've been thinking why my 782 is happy going round much sharper curves than I designed. I think it proves what Will L says on this page: https://www.scalefour.org/forum/viewtopic.php?f=96&t=5030 You'll find useful and helpful stuff there. Particularly this conclusion "This goes alo...
by Julian Roberts
Sat Nov 10, 2018 4:32 am
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Sorry for delay Knuckles. Exhibition in Newcastle today. And for perhaps being confusing. When I have a moment I'll test more of my locos round my 2ft curve. I reckon that as my 782 goes round it they all might...but my tender locos will be too close coupled to manage with the tender. Even for a 4ft...
by Julian Roberts
Tue Nov 06, 2018 1:05 pm
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Thanks Knuckles! The moving bit you refer to is the radius rod. The amount of movement it makes varies on the real thing, basically according to speed and how hard the loco is having to work. Only at the slowest speeds is it likely to be in "full gear" as I have made it, but my locos have ...
by Julian Roberts
Mon Nov 05, 2018 9:46 am
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Hi Knuckles I realised I could try a couple of things for you on my 2ft radius test track. First here is a video of a Class 782 loco on it. I designed it for a 4ft radius but clearly I overestimated the amount of sideplay needed! - outside brake pull rods add to the challenge. The 782 has a much lon...
by Julian Roberts
Sat Nov 03, 2018 8:57 am
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3323

Re: Radius Testing - Practical Experiments.

Knuckles, I'm not sure this adds anythng of value to what's been said already! I think you have seen this previously, but just in case you didn't rPiVz1vDYhQ This is a 2ft radius curve with reverse and no transition. AJ couplings. The buffers don't lock when reversing, to my surprise, but longer loc...
by Julian Roberts
Mon Oct 22, 2018 3:48 pm
Forum: Exhibitions
Topic: Scalefour North 2018 Retrospective
Replies: 2
Views: 771

Re: Scalefour North 2018 Retrospective

John, just like to say thank you from me and all those people who couldn't make it to see such fine layouts. It is one way I can see what is going on. Hear hear Doug. ..from me who WAS there! - but too busy operating to see all of this fine modelling. Hope not to sound obsequious but what an achiev...
by Julian Roberts
Fri Aug 17, 2018 8:07 am
Forum: New Products
Topic: Accurascale 24.5t HOP24/HUO hoppers
Replies: 31
Views: 4347

Re: Accurascale 24.5t HOP24/HUO hoppers

Thanks Rob! Apologies for wasting space on the thread. I must have had a "doh" moment in overlooking Will's post.
by Julian Roberts
Thu Aug 16, 2018 7:28 pm
Forum: New Products
Topic: Accurascale 24.5t HOP24/HUO hoppers
Replies: 31
Views: 4347

Re: Accurascale 24.5t HOP24/HUO hoppers

Use the Dave Bradwell springing units. See my posts in "on my workbench". Hi Hardwicke I've skimmed your workbench thread (without an e at the end of your name! - I assume I've got the right one?!) and can't find what you're referring to. Any chance of a link? Cheers Julian Also, thanks f...

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