Search found 176 matches

by andrewnummelin
Fri Jul 24, 2015 10:59 pm
Forum: Standard Gauge Workbench
Topic: Ex-LNWR shed, somewhere in South Wales.
Replies: 12
Views: 4344

Re: Ex-LNWR shed, somewhere in South Wales.

philip-griffiths wrote:Thanks Ian,

...then why build it narrow gauge and with chasms for checkrails? :-)

regards


Didn't the original Sirhowy line look a bit like that?
by andrewnummelin
Thu Jul 02, 2015 6:50 pm
Forum: Starting in P4
Topic: Maximum Gradients
Replies: 16
Views: 3686

Re: Maximum Gradients

All depends on whether you want to be able to control the train on the incline and how much "run out" you have at the bottom. And, of course, on whether the approaches are curved or not. The answers will also depend on the stock - if it's one of your modern multiple units with "contin...
by andrewnummelin
Wed May 27, 2015 4:41 pm
Forum: Coaches and NPCS
Topic: LSWR operation; horse boxes
Replies: 23
Views: 4976

Re: LSWR operation; horse boxes

I think when possible a horse box would be coupled next to the engine to ensure as smooth a ride as possible. I would have thought that the opposite was likely to be the case - surging from a steam loco will reduce the further back in the train you are (continuous brakes, taught couplings, buffers ...
by andrewnummelin
Mon Apr 13, 2015 2:18 pm
Forum: Mark Tatlow
Topic: A Highland Miscellany
Replies: 274
Views: 80723

Re: A Highland Miscellany

I have produced the coupling rods (and connecting rods) in true scale and fattened by 15%. This, and may other pregroup locos, had very slender coupling rods - so slender indeed that I am concerned as to their durability in use. I'm curious and since I'm planning my own pre-grouping efforts, where ...
by andrewnummelin
Mon Dec 01, 2014 6:26 pm
Forum: Standard Gauge Workbench
Topic: Drakelow
Replies: 47
Views: 16021

Re: Drakelow

And now we have the evidence -- a ladder of Barry slips at Barry: http://85a.co.uk/forum/gallery/2/2_280655_080000000.jpg Many thanks to Sandy Croall for the pic. Martin. I'm pretty sure these "Barry Slips" were not at Barry. This photograph appears on page 51 in John Hutton's "The N...
by andrewnummelin
Wed Nov 26, 2014 5:58 pm
Forum: Vehicle dynamics and trackholding
Topic: Tractive Effort
Replies: 14
Views: 4186

Re: Tractive Effort

Will L wrote:... and some truly startling performances should be available from a motorised wheel barrow type loco. In a 4mm world the loco designers would probably have stuck with single drivers.

Mr Emett on a monorail?
by andrewnummelin
Mon Sep 08, 2014 7:31 pm
Forum: Where to Find?
Topic: Etched headstocks
Replies: 7
Views: 2717

Re: Etched headstocks

Guy Rixon wrote:William: I'll nned to build some ..... coaches, including Metropolitan, where no kits exist.


There are some available - I've a few of these but have yet to complete a proper ("rigid") underframe.
http://www.roxeymouldings.co.uk/category/22/4mm-scale-metropolitan-railway/
by andrewnummelin
Wed Jun 18, 2014 4:32 pm
Forum: iak
Topic: Wagon floors... Wagon sides... Bare Wood... Worn wood or what?
Replies: 45
Views: 12942

Re: Wagon floors... Worn,Corroded or What?

Noel wrote:
iak wrote:... suggesting a photograph date in the late 1960s ...

The year and location is on the photo which was almost certainly taken in August or September. Further details (embedded in the file) are that the wagon was ex PO number P245914K registered GWR 1933 no 3689.
by andrewnummelin
Sun Jun 15, 2014 11:50 am
Forum: iak
Topic: Wagon floors... Wagon sides... Bare Wood... Worn wood or what?
Replies: 45
Views: 12942

Re: Wagon floors... Worn,Corroded or What?

An example, but the sides are clearer than the floor (with image adjusted to lighten the shadows using Photoshop elements.)
1770copy.jpg
1770copy.jpg (200.89 KiB) Viewed 7223 times
by andrewnummelin
Mon Apr 14, 2014 8:05 am
Forum: Track and Turnouts
Topic: Industrial Track inset into Setts
Replies: 8
Views: 3372

Re: Industrial Track inset into Setts

I'd guess that the minimum radius will be well under 1': but take care with the layout as buffer locking could be a problem. If you look at Blaenavon ironworks you'll find some prototype situations with very tight curves - my memory was that you could get around 4 wagons on one of the 90 degree bend...
by andrewnummelin
Mon Jan 06, 2014 5:37 pm
Forum: Track and Turnouts
Topic: "old" flat bottom track
Replies: 11
Views: 3491

Re: "old" flat bottom track

Thanks for all the suggestions. The rail is on its way so it won't be long before I experiment with a couple of the techniques.
by andrewnummelin
Sat Jan 04, 2014 9:05 pm
Forum: Track and Turnouts
Topic: "old" flat bottom track
Replies: 11
Views: 3491

"old" flat bottom track

To contrast with the bullhead on the main line, I've decided to lay a couple of sidings using flat bottom track, not the modern variety on baseplates but late 19th century type where the rail appears to be spiked directly to the sleepers. I prefer to use plywood sleepers but I don't fancy "gett...
by andrewnummelin
Tue Oct 29, 2013 12:03 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

At last I have found a bit of spare time to continue this thread. 0-6-4T No 23 did just make it to Scaleforum where there were many excellent models on display: it was very nice to see more than in recent years, let's hope that next year there are even more. Scaleforum.jpg workbench07.jpg To my dism...
by andrewnummelin
Thu Oct 03, 2013 9:24 pm
Forum: Guest Book
Topic: Wooden buffer beams
Replies: 22
Views: 5000

Re: Wooden buffer beams

I had a quick look in a couple of books this morning and found that it was mostly impossible to tell the structure of the beams, in particular whether or not there was a rear plate. The only good photos I found were of preserved locos: an ex Mersey Railway 0-6-4T in Australia (two plates), Trojan at...
by andrewnummelin
Wed Sep 25, 2013 8:43 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

Penrhos1920 wrote:
What did you do for the driving wheels in the end?

Richard

By sheer luck, I found in the spares box a few Sharman wheels that were slightly under their nominal size.
by andrewnummelin
Wed Sep 25, 2013 8:39 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

Penrhos1920 wrote:1 down just 2 more to go?
Richard

1 hasn't gone yet!!!!!!!!!!!
by andrewnummelin
Mon Sep 23, 2013 9:35 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

The soldering iron has been put away (temporarily) and the paint brush should appear soon.... but will it be dry by the weekend?
workbench06.JPG
by andrewnummelin
Fri Sep 13, 2013 7:06 pm
Forum: On My Workbench
Topic: Genesis of a model locomotive design
Replies: 34
Views: 16132

Re: Genesis of a model locomotive design

Indeed an excellent approach - looking at your notebook I don't think you are short of discipline! My equivalent are odd scraps of paper.... I was planning to do something similar after Scaleforum but it won't be the genesis, it will be more a list of problems and mistakes with an appeal for help in...
by andrewnummelin
Mon Aug 12, 2013 5:54 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

Andrew, that looks wonderful! A marvellously eccentric prototype. I think some of your problems might have been easier if your outside frames had been separate, maybe as part of the footplate, rather than than being fixed with the inner chassis. Or is there a reason you did it this way? Great stuff...
by andrewnummelin
Mon Aug 12, 2013 5:20 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

johnlewis wrote:as a one-time 'model engineer' tool maker I am intrigued by the tool sitting to left of the bench. Is it something you made?

It's a GW Models rivet press - way beyond my skills to make anything similar. Although it's not a perfect tool it is a huge help and I recommend it highly.
by andrewnummelin
Mon Aug 12, 2013 5:10 pm
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

"Cecil Raikes", another of the same class, ........ The National Museums Liverpool were kind enough to let me have a good look at the loco that is in their store. This cleared a load of questions that I had but, as normal, raised a whole lot more! Just out of interest, what radius curves ...
by andrewnummelin
Mon Aug 12, 2013 8:40 am
Forum: andrewnummelin
Topic: PC&NR and other things.
Replies: 24
Views: 10965

Re: PC&NR and other things.

Things are progressing too slowly - my target was to have a loco chassis completed by the end of March ............ The above was written at the end of April and July has now passed with the chassis still not finished! As Terry Bendall has given me a nudge I thought I ought to give a bit of a statu...
by andrewnummelin
Sun Aug 11, 2013 8:17 pm
Forum: Where to Find?
Topic: Material for tyres - 946 alloy
Replies: 18
Views: 4609

Re: Material for tyres - 946 alloy

Many thanks everyone for the very useful comments and the inspiration from the S scale wheel. Although I have turned steel on my Unimat I've always been concerned about lubrication (I'm not set up for it) and I wondered if working with an aluminium alloy might be easier. I did wonder about the wear ...
by andrewnummelin
Wed Aug 07, 2013 7:02 pm
Forum: Where to Find?
Topic: Material for tyres - 946 alloy
Replies: 18
Views: 4609

Material for tyres - 946 alloy

I am thinking about having a go at turning some tyres and was wondering what material to use when I remembered an article (J. M. Davidson, Model Railways, January 1973 p 28) with a recommendation to use Alcoa Superspeed 946, a corrosion resistant free-cutting alloy. Perhaps not surprisingly after su...
by andrewnummelin
Mon Jun 10, 2013 8:53 pm
Forum: Steam Locomotives
Topic: crosshead driven water feed pump
Replies: 10
Views: 3724

Re: crosshead driven water feed pump

Steve & Nathalie,

Many thanks - I'll follow up your very useful information.

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