Search found 1418 matches

by Will L
Thu Apr 18, 2019 7:51 pm
Forum: Track and Turnouts
Topic: rail/wheel profile - prototype has problems too
Replies: 6
Views: 367

Re: rail/wheel profile - prototype has problems too

A few years ago, the American Passenger Transport Association were evaluating a proposal to adopt a different wheel profile for LRT trains, one with a greater flange-contact angle. The idea was to allow higher speeds on sharp curves. Makes me think that a less-prototypical profile might help our ov...
by Will L
Tue Apr 16, 2019 6:50 pm
Forum: Jeremy Suter
Topic: Turning a chimney
Replies: 16
Views: 779

Re: Turning a chimney

Excellent post as always Jeremy. While I'm not a lathe user, I thought i understood fly cutting but the flair jig was a new one on me. Very clever. I think I see how it works but a bit more detail on how you use it would be interesting. For instance, presumably you need several passes moving the fla...
by Will L
Fri Apr 12, 2019 5:17 pm
Forum: Starting in P4
Topic: P4 wagon Compensation(springing)
Replies: 31
Views: 1539

Re: P4 wagon Compensation(springing)

Gordon Bennett! As there appears to be a stone wall preventing resolution of the bearing/axleguard compatibility issues, I'll go back to my main point which was to use the plastic axleguards, slotted, in order to save a lot of work replacing them and adding castings. What's wrong with that then? Ab...
by Will L
Fri Apr 12, 2019 5:14 pm
Forum: Starting in P4
Topic: P4 wagon Compensation(springing)
Replies: 31
Views: 1539

Re: P4 wagon Compensation(springing)

Any rigid or compensated wagon can live with the W irons flexed away from the vertical. As someone who has quite a lot of both, I wouldn't recommend it. It's likely to result in a vehicle which won't run properly. In uncompensated axles it can result in wheelsets which won't rotate, or which have n...
by Will L
Fri Apr 12, 2019 11:01 am
Forum: Starting in P4
Topic: P4 wagon Compensation(springing)
Replies: 31
Views: 1539

Re: P4 wagon Compensation(springing)

I'm not interested in the variables - And I found them unavoidable, for reasons Bill just pointed out, and as Russ explains in his article to which I linked. The fact is that anybody who starts putting assorted wagon kits together is likely to find that wheel axle/barring fit between W irons is inc...
by Will L
Thu Apr 11, 2019 7:36 pm
Forum: Starting in P4
Topic: P4 wagon Compensation(springing)
Replies: 31
Views: 1539

Re: P4 wagon Compensation(springing)

I'm with Keith on this, and its not just the bearing cups that vary, its the axle length and the "natural" distance between the W irons from kit to kit. None of these should be very big, but taken together can be big enough to be noticeable. Follow this link to the CLAG website where Russ ...
by Will L
Thu Mar 21, 2019 5:35 pm
Forum: Lathe Work
Topic: Inside threaded rod
Replies: 6
Views: 769

Re: Inside threaded rod

Rather than solder brass nuts on top of brass sheet (not the most secure) I thought I would take advice and the solution seems to be to be as per the picture enclosed. John you could try soldering the nut over a slightly undersize hole and use a tapered tap to extend the thread through the sheet. E...
by Will L
Tue Mar 19, 2019 5:29 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 253
Views: 27861

Re: Crab Comet conversion

We clearly have differing views on this and that's fine. The key thing is to have satisfactorily running locos, whatever the design features. Dave Can't argue with that. However, I'm not sure how having a pony truck sliding on bearing pads, with the axle sprung within the truck with simple wire spr...
by Will L
Tue Mar 19, 2019 12:20 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 253
Views: 27861

Re: Crab Comet conversion

... I don't like to see daylight between trucks/bogies and the loco chassis. This is both visually and functionally un-prototypical for me. You have to agree with that and through keeping the pony truck/bogie in prototypical contact with the main chassis is certainly a fair way to achieve that, I d...
by Will L
Sun Mar 17, 2019 5:47 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 253
Views: 27861

Re: Crab Comet conversion

... My conclusion, with due apologies to Bill (page 3) and Will (page 6), is that the pony wheel does need to have substantial weight on it, much more than its own weight, to reliably stay on the track, however that weight is applied... Don't think we are disagreeing here, the only question was whe...
by Will L
Sat Mar 09, 2019 11:05 pm
Forum: Semaphore Signals
Topic: Mystery apparatus at Radstock
Replies: 8
Views: 923

Re: Mystery apparatus at Radstock

There does not seem to be any connection between the point rodding run that seems to be unbroken between the rodding stools either side of the outlined device. Why mention the point rodding there was no suggestion these were convected? Enlarging the image shows no evidence of a cable (I assume you ...
by Will L
Sat Mar 09, 2019 9:50 pm
Forum: Steam Locomotives
Topic: Locomotive fire irons
Replies: 14
Views: 929

Re: Locomotive fire irons

Dave Holt wrote:... I presume that if there was a regular loss of fire irons stowed that way, the authorities would have clamped down on it.

Wasn't it the regular loss of out of gauge fireman that was more to the point?
by Will L
Mon Feb 25, 2019 12:21 am
Forum: Painting and Weathering
Topic: Correct Roof Colour?
Replies: 9
Views: 1070

Re: Correct Roof Colour?

Not sure there is one, unless brand new then matt white*, after that increasingly dirty grey, and all different. If you do a mix of matt/dull black and white, fresh mix for each time and don't worry about the exact quantities, you won't go far wrong. To be honest buying a can of roof grey and using ...
by Will L
Sat Feb 23, 2019 11:16 am
Forum: Guest Book
Topic: Congratulations to Dave Franks et al.
Replies: 14
Views: 727

Re: Congratulations to Dave Franks et al.

I may be wrong but I think Alloa is EM Jim P I'm sure it's 00 - and an excellent example ... As Indeed it is ... as to how handbuilt 00 track can be mistaken for both EM and P4. Until you get to that scissors cross over which does rather shout at you. Actually I agree that well made hand crafted tr...
by Will L
Fri Feb 22, 2019 10:59 pm
Forum: Guest Book
Topic: Congratulations to Dave Franks et al.
Replies: 14
Views: 727

Re: Congratulations to Dave Franks et al.

But doesn't the interactive picture of Alloa show just why P4 is so desirable!
by Will L
Tue Feb 12, 2019 5:47 pm
Forum: iak
Topic: Screw Coupling Protocol
Replies: 11
Views: 1363

Re: Screw Coupling Protocol

When using these couplings, it may just prove more practical to couple routinely if you use the longer link as they get more difficult to use the sorter/tighter they are, although this is less true if you use sprung buffers. But also keep in mind you don't need to make the bend in the loop too tight...
by Will L
Sun Feb 10, 2019 10:43 pm
Forum: Steam Locomotives
Topic: GWR 1366PT - Heljan Model
Replies: 27
Views: 2204

Re: GWR 1366PT - Heljan Model

Will wrote: Yes I was significantly under informed too and had never heard of them. Seems they primarily do small industrials and appear to have a significant range. Will, you took a close look at a CSP kit at Scaleforum in September... Remember this little CSB'd CSP kit? :D As said, significantly ...
by Will L
Sun Feb 10, 2019 10:33 am
Forum: Steam Locomotives
Topic: GWR 1366PT - Heljan Model
Replies: 27
Views: 2204

Re: GWR 1366PT - Heljan Model

steve howe wrote:I have a DJH kit waiting its turn, I've never heard of CSP, can anyone enlighten me?


Yes I was significantly under informed too and had never heard of them. Seems they primarily do small industrials and appear to have a significant range.
Web site here
by Will L
Mon Feb 04, 2019 1:28 pm
Forum: Chassis and Suspensions
Topic: Flywheel sources
Replies: 9
Views: 755

Re: Flywheel sources

A small lump of turned brass is an awful lot cheaper than a DCC system... ...or even an emf based DC controller, but considerably less effevtive. Your flywheel does nothing when you really need it, at very slow speed, while the emf based system is at it's best at low speeds. No experience of Nigel'...
by Will L
Wed Jan 30, 2019 1:18 pm
Forum: Steam Locomotives
Topic: Some North Eastern & LNER Locomotive Builds
Replies: 151
Views: 13731

Re: Some North Eastern & LNER Locomotive Builds

mikemeg wrote:I did wonder whether doing a 'blow by blow' of the build(s) was of any interest but, Dave, you've answered that query - many thanks.


Fear not, Dave will not be the only one to watch with interest. I for one will be disappointed if you don't. See the Digital Highlights column in the next snooze.
by Will L
Thu Jan 03, 2019 9:35 pm
Forum: Steam Locomotives
Topic: Some North Eastern & LNER Locomotive Builds
Replies: 151
Views: 13731

Re: Some North Eastern Locomotive Builds

...I'm using HMRS pressfix transfers on this and as the sheet is now quite old, the glue is not as potent as it might be so getting the various elements to stick can be a challenge... I seem to remember that Pressfix transfers that have passed their best can be made to work by treating them like Me...
by Will L
Fri Dec 28, 2018 8:52 am
Forum: Layouts and Operations
Topic: track inclines from level to standard bridge height
Replies: 3
Views: 421

Re: track inclines from level to standard bridge height

You may find the following of interet, as it gives you an idea of what sort of things can be achieved https://www.scalefour.org/forum/viewtopic.php?f=19&t=1500#p30680 But you will note this is all to do with getting good performance out of your loco, a point Keith also made in passing when he no...
by Will L
Sun Dec 23, 2018 11:25 pm
Forum: Guest Book
Topic: Example prototype ride over VERY uneven track
Replies: 8
Views: 856

Re: Example prototype ride over VERY uneven track

Bogie vehicles are generally the best able to deal with very uneven track, while vehicles with more than two axles in a rigid frame are the least able. My, certainly only very cursory, research has shown that the average Uk built loco chassis allows no more than 2 inches of vertical movement either ...
by Will L
Sun Dec 23, 2018 10:35 am
Forum: Guest Book
Topic: Example prototype ride over VERY uneven track
Replies: 8
Views: 856

Re: Example prototype ride over VERY uneven track

All goes to show that working suspension is a wonderful thing, something people who complain about their stock falling off "at random" should consider.
by Will L
Mon Dec 17, 2018 1:44 pm
Forum: Scenery and Structures
Topic: painting paving stones and platform copings
Replies: 14
Views: 1603

Re: painting paving stones and platform copings

martin goodall wrote:.. I have not used this technique with paving slabs, but have applied it to individually laid roof slates.


In deed yes, I very much favour this method of slating too.

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