Search found 523 matches

by dal-t
Tue Feb 07, 2017 9:25 am
Forum: Tools and Techniques
Topic: glueing help
Replies: 9
Views: 2529

Re: glueing help

I have occasionally encountered problems with Butanone drying too quickly in warm conditions, before it has had time to properly soften the material being joined, the solution to which was a second, more liberal application. But it isn't necessary to use Butanone when working with polystyrene, which...
by dal-t
Mon Feb 06, 2017 3:24 pm
Forum: jjnewitt
Topic: JJNewitt's Wonderful World of Wagons - Anchor Mount Tanks
Replies: 109
Views: 48913

Re: JJNewitt's Wonderful World of Wagons - Anchor Mont Tank Wagon

Profuse apologies, m'Lord, no idea how that misquote occurred - I'm sure I just clicked the little wriggly worms above the text as usual. All the same, pleased to know your nobleness has thoughts along the same lines as this 'umble servant. Of course, there's no need for cutting/prising with the Air...
by dal-t
Mon Feb 06, 2017 3:14 pm
Forum: Chassis and Suspensions
Topic: Binding Gearbox
Replies: 79
Views: 15577

Re: Binding Gearbox

garethashenden wrote:T
Second, the locomotive goes about half the speed backwards as it does forwards.


You realise this requires a re-write of the fundamental laws governing the universe? Until now, every chassis ever built has run faster in reverse than in forward gear!
by dal-t
Mon Feb 06, 2017 12:56 pm
Forum: jjnewitt
Topic: JJNewitt's Wonderful World of Wagons - Anchor Mount Tanks
Replies: 109
Views: 48913

Re: JJNewitt's Wonderful World of Wagons - Anchor Mont Tank Wagon

One problem with a prototypically open chassis for tanks, though, is where do you add extra weight if you feel the need? Perhaps between the central longitudinals? Won't the oil you're going to put in the tank (on the basis of 'getting it all right') be heavy enough? I'm currently building a trio o...
by dal-t
Sat Feb 04, 2017 12:53 pm
Forum: Where to Find?
Topic: Bogie kit
Replies: 12
Views: 3552

Re: Bogie kit

Pay no attention, Jim, take Jol's suggestion and build a PC bogie (I've looked at the instructions and they terrify me - a step by step build by an expert might just drag me out of my bunker). But if you must follow the 'mac' bit of the Lowmac with a machinery load, I wonder if this one would tickle...
by dal-t
Sat Feb 04, 2017 12:08 pm
Forum: Product Information
Topic: Updated Excel MRJ Index
Replies: 20
Views: 3615

Re: Updated Excel MRJ Index

I don't know how the Excel version originated, but the online search I've previously used was started by Matt Ots, partly as a programming exercise, and transferred in 2012 to Chris Baker, who maintained it with the help of many others (taken from its 'About' page). It is current to issue #249 and w...
by dal-t
Fri Feb 03, 2017 1:05 pm
Forum: Product Information
Topic: Updated Excel MRJ Index
Replies: 20
Views: 3615

Re: Updated Excel MRJ Index

Fine for me now, downloaded with Firefox straight into Numbers and now saved safely in my 'Railways' folder.
by dal-t
Fri Feb 03, 2017 11:00 am
Forum: Product Information
Topic: Updated Excel MRJ Index
Replies: 20
Views: 3615

Re: Updated Excel MRJ Index

Doesn't work for me in either Firefox or Safari (but thanks for prompting a reminder of the idiocies of Safari, the only piece of Apple software that's utterly useless - I'm much happier with Firefox's occasional foibles again now).
by dal-t
Fri Feb 03, 2017 9:12 am
Forum: Chassis and Suspensions
Topic: Binding Gearbox
Replies: 79
Views: 15577

Re: Binding Gearbox

It has always surprised me that fold-up frames came so late and have been taken up by so few designers. This still isn't helping Gareth much, but I've always assumed that was because it's commercially crippling - don't fold-up frames have to be Gauge-specific, so if you go for any one of the 4mm Ga...
by dal-t
Thu Feb 02, 2017 9:19 pm
Forum: Chassis and Suspensions
Topic: Binding Gearbox
Replies: 79
Views: 15577

Re: Binding Gearbox

Should we maybe get back to the original issue? At this point I'm really not sure whether we have helped Gareth or not. Allan's pictures of inverted coupling rods reminded me that I've also encountered such a problem, on a 7mm loco where I misread the marking of the rods, and it did indeed produce s...
by dal-t
Thu Feb 02, 2017 1:26 pm
Forum: Starting in P4
Topic: Building my new p4 layout
Replies: 31
Views: 9123

Re: Building my new p4 layout

Thanks again, Martin, I'm feeling even more relieved than usual that I stick to pre-Grouping and don't have to grapple with all the flat-bottom stuff.
by dal-t
Thu Feb 02, 2017 11:32 am
Forum: Starting in P4
Topic: Building my new p4 layout
Replies: 31
Views: 9123

Re: Building my new p4 layout

Extremely informative (and speedy) response, as usual, Martin, but can someone explain to a slow learner like myself how the apparently irreconcilable can live in harmony - if the planing is indeed longer, and all other aspects are the same, how can they both be of equal length?
by dal-t
Wed Feb 01, 2017 9:45 am
Forum: jim s-w
Topic: Brettell Road
Replies: 574
Views: 135426

Re: Brettell Road

Jim, I'm surprised no-one has offered you better advice on the weathersheet yet. I've modelled them in the past, since most pre-Grouping designs that survived to Grouping or Nationalisation had acquired them, but I've always gone for the easy option of rolled up on the half-roof. As they were usuall...
by dal-t
Mon Jan 30, 2017 8:10 pm
Forum: Chassis and Suspensions
Topic: Loctite and wheels
Replies: 11
Views: 3161

Re: Loctite and wheels

You might refer to Loctite's documentation to identify the various types. E.g. the page for the 600-series retainers: http://www.loctite.co.uk/retaining-9171.htm . Always worth checking out these things - I've used 601 for years, but only just discovered that it "fluoresces for presence monito...
by dal-t
Mon Jan 30, 2017 4:02 pm
Forum: Other Workshop Practice
Topic: Soldering Piano Wire
Replies: 16
Views: 5615

Re: Soldering Piano Wire

Will L wrote:
And in pursuit of some nice model detail, it might pay to think how the prototype was constructed, they wouldn't have soldered the supports to the inside edge of the flue either.


But did they really need to have the roof hinge on the prototype?
by dal-t
Sun Jan 29, 2017 2:49 pm
Forum: Chassis and Suspensions
Topic: Binding Gearbox
Replies: 79
Views: 15577

Re: Binding Gearbox

At the risk of diverting into a totally unproductive siding (for which mucho apologicoes and lashings of humble pie with double doses of grovelling cream if it proves to be so), can I just ask how much endfloat there is on the motor shaft? I enquire because I notice the addition of a substantial fly...
by dal-t
Sun Jan 29, 2017 1:05 pm
Forum: Wagons
Topic: Dave Bradwell Springing units
Replies: 18
Views: 6534

Re: Dave Bradwell Springing units

50gm per wagon is a figure plucked from the air via some very dubious north American logic. The NMRA Recommended Practice for car weight is actually 1oz (28gms) plus 1/2oz (14gms) per inch of car length (for HO gauge), so somewhere between 50 to 70 gms would be derived values, without adjustment fo...
by dal-t
Fri Jan 13, 2017 9:05 am
Forum: East Midlands Area Group
Topic: NAG Lathe Workshop for Beginners 7th January 2017
Replies: 9
Views: 3136

Re: NAG Lathe Workshop for Beginners 7th January 2017

The Amateur's Lathe is widely available on a well-known on-line auction site - I've been meaning to pick up a copy for some time, and since it has once again failed to surface as a Christmas or Birthday present maybe I'd better start bidding now, before they all get snapped up by Terry's recommendat...
by dal-t
Thu Jan 05, 2017 8:50 am
Forum: Chassis and Suspensions
Topic: Gibson crankpins
Replies: 27
Views: 6612

Re: Gibson crankpins

Actually raises a further question - why? - since ISO standard is 0.75 for coarse, 0.80 for fine!
by dal-t
Tue Jan 03, 2017 5:48 pm
Forum: Chassis and Suspensions
Topic: Gibson crankpins
Replies: 27
Views: 6612

Re: Gibson crankpins

The M1 screws you're most likely to encounter will be either coarse, or fine. Fine has a thread pitch of 0.2, coarse 0.25. Sorry I don't know which Colin's crankpins are, or which taps you've got, but there is at least the possibility you've got a mismatch. Have the taps been used much? My 'bush eng...
by dal-t
Tue Dec 27, 2016 12:37 pm
Forum: Steam Locomotives
Topic: Suitable motor/gearbox for Finney M7
Replies: 4
Views: 1602

Re: Suitable motor/gearbox for Finney M7

But if you wanted to use your Portescap, doesn't MJT do gearbox sides?
by dal-t
Fri Dec 16, 2016 11:44 am
Forum: Layouts and Operations
Topic: Canonbury Goods: NLR c.1903
Replies: 96
Views: 24884

Re: Canonbury Goods: NLR c.1903

jim s-w wrote: one potential problem might be that a derailed wagon might leave marks in the surface too.

Jim


Wot, just like in real life? Watch out, everyone will have to have one of those ...
by dal-t
Tue Dec 13, 2016 4:37 pm
Forum: Tools and Techniques
Topic: alternative to glue?
Replies: 5
Views: 2094

Re: alternative to glue?

Don't build many plastic kits then, Tim?
by dal-t
Sun Dec 11, 2016 9:28 pm
Forum: Layouts and Operations
Topic: Canonbury Goods: NLR c.1903
Replies: 96
Views: 24884

Re: Canonbury Goods: NLR c.1903

Looks great in that state, but if you can get such a thickness to dry without shrinking/splitting I'll be fascinated to learn how. I built mine up to less total depth in three or even four layers, but it still pulled back severely from the rails, and cracked down the middle of each section, as it dr...
by dal-t
Thu Dec 01, 2016 6:02 pm
Forum: Standard Gauge Workbench
Topic: Perhaps a not so good idea...
Replies: 58
Views: 21933

Re: Perhaps a not so good idea...

A High Level Black Hawthorn lettered for the Wells Harbour Commissioners with running rights into Wells station may have taken over the duties of the horse and serves the harbour branch a few times over the day. I really like the look of the NRM Black Hawthorn ( http://nrm.org.uk/ourcollection/loco...

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