Search found 216 matches

by andrewnummelin
Fri Jun 17, 2016 9:13 pm
Forum: andrewnummelin
Topic: some other things
Replies: 14
Views: 4990

Re: some other things - 3D printing & CSBs

The paint is drying and the glue setting ...... so I should be able to box it up in the morning and take it to the AGM where I hope I will learn what I should have done differently! This project was a bit of an experiment - firstly putting to use some of what I learned at Great Missenden in March ha...
by andrewnummelin
Tue Jun 14, 2016 7:15 pm
Forum: Chassis and Suspensions
Topic: help on sprung csb chassis with cosmetic outside frames
Replies: 25
Views: 6777

Re: help on sprung csb chassis with cosmetic outside frames

.... This gives an overall width of 36.57mm which is probably out of gauge! (Prototype dimensions I have come across vary from 33.58 to 35.67 ). .... I'll report in my workbench page whether I not I succeed. I failed, thinning the Gibson cranks wasn't really an option. http://www.scalefour.org/foru...
by andrewnummelin
Tue Jun 14, 2016 7:09 pm
Forum: andrewnummelin
Topic: some other things
Replies: 14
Views: 4990

Re: some other things - csb's and outside frames

Work has been going on with the chassis and bodywork - more on that later. Further checking of clearances revealed that I had built the inside frames too close together which in turn caused the outside frames and bearings to be too close to the wheels.... so dismantle the chassis and rebuild with th...
by andrewnummelin
Sun Jun 12, 2016 7:35 am
Forum: Chassis and Suspensions
Topic: help on sprung csb chassis with cosmetic outside frames
Replies: 25
Views: 6777

Re: help on sprung csb chassis with cosmetic outside frames

...thickness of the laminated rods are deeper than the depth of the AG bush... Tim Until you get the longer bushes, and shorten as needed, you could invert the nut as the thin section is the same diameter as the bush following AG's advice on working where clearances are limited like behind cross he...
by andrewnummelin
Sun Jun 05, 2016 7:33 am
Forum: Where to Find?
Topic: 24mm's / 6' Wheels 20 Spoke with 12" Crankpin Throw
Replies: 27
Views: 5613

3D printing for 24mm's / 6' Wheels 20 Spoke with 12" Crankpin Throw?

I've seen on Shapeways web site that someone has produced a driving wheel in "steel" http://www.shapeways.com/product/GRVUZLGTX/57-inch-13-spoke-wheel-ho-thin-spoke?optionId=42096482 and I believe similar has been done in brass. Has anyone any information on: - can one achieve a ready to r...
by andrewnummelin
Thu Jun 02, 2016 10:24 pm
Forum: Track and Turnouts
Topic: Type of track ballast
Replies: 49
Views: 20933

Re: Type of track ballast

I've had the same problem and after a couple of attempts I ditched it. I can't remember where I saw the suggestion to use it, so can't go back to see if there were any advice on suitable adhesives.
I removed what I could and filled the remaining cracks with sand and PVA.
by andrewnummelin
Tue May 31, 2016 10:10 am
Forum: Chassis and Suspensions
Topic: help on sprung csb chassis with cosmetic outside frames
Replies: 25
Views: 6777

Re: help on sprung csb chassis with cosmetic outside frames

I would echo the sentiments of others regarding care in chosing components - clearances are critical. When I appealed for information regarding outside frames I received some very useful feedback that may also help you too, see http://www.scalefour.org/forum/viewtopic.php?f=20&t=4817#p45006 (and...
by andrewnummelin
Thu May 19, 2016 6:52 pm
Forum: andrewnummelin
Topic: some other things
Replies: 14
Views: 4990

Re: some other things

Work on the chassis has progressed far enough for me to find that clearances are so tight that there is a risk of CSB wire rubbing the wheel rims - so the spacers between the inside frames are going to be split electrically. Pity I didn't see this coming as I should have fitted split axles to avoid ...
by andrewnummelin
Tue May 17, 2016 9:40 am
Forum: Other Workshop Practice
Topic: centre and spotting drills
Replies: 9
Views: 3004

Re: centre and spotting drills

Thanks to all who have responded with useful and interesting information. I got to where I did for a number of reasons: - my inability to accurately mark the position for a small hole (on a good day getting witin a quarter of a mm would be a real success) - difficulty of "centre punching" ...
by andrewnummelin
Sun May 15, 2016 6:55 pm
Forum: andrewnummelin
Topic: some other things
Replies: 14
Views: 4990

Re: some other things - outside frames

[quote="Guy Rixon" Please explain about "proper spotting drills", they sound very useful. I know what a centre drill is for and how to mis-use it for spotting. If there's a better tool for this where would one get it? Cheers, Guy[/quote] Guy, I've put a reply in the "Other W...
by andrewnummelin
Sun May 15, 2016 6:51 pm
Forum: Other Workshop Practice
Topic: centre and spotting drills
Replies: 9
Views: 3004

centre and spotting drills

Having just done something stupid. and broken my small centre drill as result, I went on line to see about buying a replacement. In so doing I came across a spotting drill and I confess that I had not heard of one of these before and it did seem to offer some potential advantages. A great way to sta...
by andrewnummelin
Thu May 12, 2016 8:47 pm
Forum: andrewnummelin
Topic: some other things
Replies: 14
Views: 4990

some other things - outside frames

Some progress to report. The Birmingham Corporation Water Works wagon now has new running gear and the missing bits of strapping have been replaced, it has joined the Cambrian wagon waiting for a trip to the paint shop. I "finished" the drawings for the loco boiler mountings and these have...
by andrewnummelin
Mon May 02, 2016 6:46 am
Forum: Coaches and NPCS
Topic: Dean Bogies
Replies: 11
Views: 3414

Re: Dean Bogies

BRUNEL wrote:Andrew,

.... what are the circular bits at the end of leaf springs called?

Derek.


I regret I've no idea what the names of the bits of the spring hanger assembly are.
by andrewnummelin
Sat Apr 30, 2016 8:01 pm
Forum: Coaches and NPCS
Topic: Dean Bogies
Replies: 11
Views: 3414

Re: Dean Bogies

When it comes to modelling these a couple of questions come straight to mind. 1. what's the best way of modelling the scroll irons? Andrew, I assume from your question that you're talking about the spring. Whilst it was a bit of a fiddle, I have managed to model the scoll by incorporating it with t...
by andrewnummelin
Thu Apr 28, 2016 7:44 am
Forum: Track and Turnouts
Topic: Society Gauge Widening Tool
Replies: 325
Views: 63908

Re: Society Gauge Widening Tool

... Gauge_widening.pdf Regards Nice numbers here! Note the plain track gauge - if you model modern image and use P4 standards you already have some gauge widening. (I remember learning over half a century ago that London Underground and British Railways used different gauges. I've often wondered wh...
by andrewnummelin
Tue Apr 26, 2016 8:12 am
Forum: Coaches and NPCS
Topic: Dean Bogies
Replies: 11
Views: 3414

Re: Dean Bogies

There are small scale reproductions in "A Pictorial Record of Great Western Coaches including the brown vehicles Part 1 (1838-1913)" by J. H. Russell; Oxford Publishing Company, 1972; SBN 90288803X. Most, but not all, of the dimensions are readable. The 6'4" bogie is on page 89, the 8...
by andrewnummelin
Mon Apr 18, 2016 5:15 pm
Forum: andrewnummelin
Topic: some other things
Replies: 14
Views: 4990

some other things

As a change from working on signals, I've started to use some of the things learnt at Great Missenden together with helpful information from other parts of this Forum. As the weather has turned a bit chilly I thought I'd aim for some heat and set off on the road paved with good intentions... - do so...
by andrewnummelin
Mon Apr 18, 2016 4:39 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 12433

Re: PC&NR and other things.

All the signals were finally installed a few weeks ago, but functioning of several is very poor despite them working OK on the bench. Improvements will have to wait until after most of the scenery has been finished (next century??). fig1.JPG Don't copy this installation - there was room for point mo...
by andrewnummelin
Sun Apr 17, 2016 10:51 pm
Forum: Steam Locomotives
Topic: Typical dimensions of Mid 19th century locos
Replies: 6
Views: 2818

Re: Typical dimensions of Mid 19th century locos

The Manchester Science Museum Beyer Peacock collection has a lot of general arrangement drawings of early locos: here's a link to an 1860 Edinburgh & Glasgow Railway 2-2-2: http://emu.msim.org.uk/web/objects/common/webmedia.php?irn=15246 . And to a page around that period: http://emu.msim.org.u...
by andrewnummelin
Wed Apr 13, 2016 8:23 am
Forum: Steam Locomotives
Topic: Typical dimensions of Mid 19th century locos
Replies: 6
Views: 2818

Re: Typical dimensions of Mid 19th century locos

Jim, Many thanks, and especially to Euan, for the detailed analysis that confirmed some of my guesses and explained loads more. This will be extremely useful for several projects that are on my wish list. As I've had help from the USA on the CAD program I am starting to use, the next loco will have ...
by andrewnummelin
Tue Apr 12, 2016 7:25 am
Forum: Steam Locomotives
Topic: Typical dimensions of Mid 19th century locos
Replies: 6
Views: 2818

Typical dimensions of Mid 19th century locos

I have a couple of modelling projects in mind for which I only have some side elevations, so I started looking through my files and books and was surprised that some information needed was consistently missing! With outside framed locos was there a typical dimension over the outside frames? I've onl...
by andrewnummelin
Tue Mar 15, 2016 9:36 pm
Forum: Coaches and NPCS
Topic: GWR E147 B set
Replies: 45
Views: 13375

Re: GWR E147 B set

The last time I travelled in one of these, or something similar, was when I was too young to realise that it would have been sensible to note the coach numbers as well as that of the loco! All I had noted was that the coach had 1 first class compartment 1 away from the guard's area. There were 3 of ...
by andrewnummelin
Wed Feb 24, 2016 7:29 am
Forum: Other Buildings and Scenery
Topic: Green grow the rushes 'O
Replies: 12
Views: 3610

Re: Green grow the rushes 'O

There may be a more organic link, especially for anyone interested in modelling railways without mechanical traction....
https://en.m.wikipedia.org/wiki/Frog_(horse)
by andrewnummelin
Fri Feb 19, 2016 4:34 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 12433

PC&NR and other things.

I was determined not to do any more rolling stock modelling until after I had a few metres of track to test things on, and installed the things often left until last - signals. I've now reached the stage where this has been achieved so the workbench has taken on a new appearance. bench.jpg I've now ...

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