Search found 249 matches

by davebradwell
Thu Jul 02, 2020 8:28 am
Forum: On My Workbench
Topic: Ralph's workbench
Replies: 22
Views: 1854

Re: Ralph's workbench

It would seem, on reflection, that by sticking a couple of bits of lead flashing inside each side of a Gresley 8w tender, I've probably created perfect condition for an inside-sprung tender to wobble - it's almost a large balance wheel. A loco with it's more central lump of lead is perfectly stable....
by davebradwell
Wed Jul 01, 2020 9:02 am
Forum: On My Workbench
Topic: Ralph's workbench
Replies: 22
Views: 1854

Re: Ralph's workbench

I've also found inside framed tenders try to wobble when they house the motor and normally use outside wagon type springs. Perhaps Adavoyle stock had more damping and possibly softer springs so it would have more effect. A sagging csb might be a better set-up as the wire would slide in the supports ...
by davebradwell
Mon Jun 29, 2020 8:02 am
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

As long as it's comfortably longer than a class 5, like the photos.

DaveB
by davebradwell
Sun Jun 28, 2020 12:34 pm
Forum: Coaches and NPCS
Topic: Dapol Stove R
Replies: 4
Views: 314

Re: Dapol Stove R

My usual way of tackling such is to turn the axle holes into 2mm wide slots and fit springing. You'd also need to file the axleguard inside faces to give a min width of 23.5. Might such an approach be possible in this case? More details if promising. Mark Tatlow mounts his centre wheels on a tube to...
by davebradwell
Sun Jun 28, 2020 12:19 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

I expect they put the wagon in the sdg any way they could but the photos show there was space for the loco which was really my point. That Clan Goods has some ominous holes where there should be rivets holding the beam on. Duncraig platform is a fine place for a picnic on one of your jaunts, Julian,...
by davebradwell
Sun Jun 28, 2020 8:34 am
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

Hmmm! 9" sounds a bit tighter than the real thing. Surely the engine has to shunt a wagon or 2 into the siding without entering the shed, it will be the big operating event of the day. Looks like it could in the photos. It will be an interesting model. If you want a second station, Julian, I me...
by davebradwell
Sat Jun 27, 2020 3:23 pm
Forum: Layouts and Operations
Topic: Kyle of Lochalsh MPD - track layout
Replies: 29
Views: 927

Re: Kyle of Lochalsh MPD - track layout

In the small photo above, the shadows give us something - the Black 5 seems to be quite close to the shed doors and there's a good working space in front before the turnout starts. Operationally, this is the important thing.

Some very exotic grounded bodies, too.

DaveB
by davebradwell
Fri Jun 26, 2020 8:20 am
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 379
Views: 63996

Re: Brimsdown-The last grand project.

Can I point out that your blades are still not opening far enough - only about 1mm. The prototype opening was 4 1/4" or thereabouts so you need almost half as much again for safety.

DaveB
by davebradwell
Wed Jun 24, 2020 6:43 pm
Forum: Chassis and Suspensions
Topic: Suspension for bogie coaches
Replies: 19
Views: 856

Re: Suspension for bogie coaches

Well, the Forum's been quiet for a while so a good old suspension question should liven it up. Here's how it is: a sprung vehicle will always run quieter than a compensated one, although the nature of the springing may just be the resilience of plastic bogies or indeed flexible compensating beams so...
by davebradwell
Sat Jun 20, 2020 7:46 pm
Forum: Flymo748
Topic: Alan Gibson GER T26 (E4) kit build
Replies: 23
Views: 675

Re: Alan Gibson GER T26 (E4) kit build

I did discover, while looking for a B12 GA, that GER drgs were difficult. Apparently someone "saved" a load of GAs (bought them) when the works were being closed and these have ended up as a detached collection in a museum in East Anglia - Norwich, possibly. Can someone take up this story,...
by davebradwell
Sat Jun 20, 2020 9:11 am
Forum: Flymo748
Topic: Alan Gibson GER T26 (E4) kit build
Replies: 23
Views: 675

Re: Alan Gibson GER T26 (E4) kit build

Pretty soon after starting to buy them, I lost faith in the accuracy of kits, although will admit there's been a considerable improvement since those days. I avoid the usual modellers' scale drawings which I regard as a form of censorship - somebody takes a real, reliable drawing, redraws it to our ...
by davebradwell
Sat Jun 20, 2020 8:49 am
Forum: Track and Turnouts
Topic: Kyle of Lochalsh tandem turnout length and other questions
Replies: 30
Views: 721

Re: Tandem turnout length question

Weren't they called "sleepered" turnouts, they were on the NER, although I believe "turnout" is a modellers' word? Isn't "interlacing" something else to do with overlapping pointwork? You might also have a timbered crossing with the rest sleepered due to a replacement a...
by davebradwell
Thu Jun 18, 2020 8:41 am
Forum: Steam Locomotives
Topic: Bachmann B1
Replies: 100
Views: 7303

Re: Bachmann B1

Sorry about the lack of a speedo brkt - my Hornby body had one (but I've cut it off recently to do "Sassaby"). Not sure if I have information - I did one for the K1. Boiler bands are always an issue with plastic bodies as they should be around a thou' thick and 0.7 wide wide with 2 lines o...
by davebradwell
Mon Jun 15, 2020 3:38 pm
Forum: On My Workbench
Topic: CeeJay60's WorkBench
Replies: 17
Views: 899

Re: CeeJay60's WorkBench

A very fine thing but it's a pity the bracket isn't the correct pattern - surely not. Can't you do a Megginson and build one up from strip if the correct size isn't available from the D&S range? It'll bother you!

DaveB
by davebradwell
Sat Jun 13, 2020 8:57 am
Forum: Other Workshop Practice
Topic: A machining question.
Replies: 9
Views: 705

Re: A machining question.

Getting closer to my ex day job, I'd ask if the bosses need to be circular and how many you want? What material? Can the top piece A be made thicker so that the seatings can be machined into it and saving 2 fiddly little bushes and an assembly job? I fear that after machining part D it could take a ...
by davebradwell
Sat Jun 13, 2020 8:27 am
Forum: Starting in P4
Topic: Wormdrive sleeves
Replies: 19
Views: 1438

Re: Wormdrive sleeves

The only trouble with all this is that you haven't a hole of 0.7925mm, there is a drill around that size and the rest is speculation/wishful thinking. We're not really sure how big the shaft is either until someone puts a Mike on it.

DaveB
by davebradwell
Fri Jun 12, 2020 8:48 pm
Forum: Other Workshop Practice
Topic: A machining question.
Replies: 9
Views: 705

Re: A machining question.

The seatings for the domed washers are the easy bit - ball ended cutters are available. As to machining something around 0.8 wide, that's clever stuff and the shape suggests cnc or several operations. Take heart that I'm not a qualified machinist so this is just a passing view. Actually, domed washe...
by davebradwell
Thu Jun 11, 2020 7:31 pm
Forum: Chassis and Suspensions
Topic: Easing wheels tight to gauge
Replies: 21
Views: 894

Re: Easing wheels tight to gauge

My wheels are never so tight that a hammer is required. If they are narrow to gauge there is a good chance that the axle will be protruding slightly. Hold chassis on its side and place flat piece of metal - I use the handle of some tweezers - on end of axle. With fingers between frames press on meta...
by davebradwell
Wed Jun 10, 2020 7:57 am
Forum: Paul Townsend
Topic: Dartmouth progress
Replies: 12
Views: 4145

Re: Dartmouth progress

If you're micro-stepping the turntable, why do you want a belt drive? Just mount the deck on the motor shaft. Cut out the middle-man. You'll need a motor with a decent size shaft, of course, and real bearings. Less work all round.

DaveB
by davebradwell
Tue Jun 09, 2020 9:46 pm
Forum: Steam Locomotives
Topic: Brassmasters Blk5 45232
Replies: 208
Views: 21816

Re: Brassmasters Blk5 45232

If you fancy a search, I believe there's a grade of Loctite that's suitable for overlays. We had some at work (years ago now) and our technician was using it for sticking overlays on etched vans. It seemed thixotropic so the component would float about until pressed down - easier and quicker than so...
by davebradwell
Mon Jun 08, 2020 8:27 am
Forum: Starting in P4
Topic: Wormdrive sleeves
Replies: 19
Views: 1438

Re: Wormdrive sleeves

Well I found a reamer - £26-70. A hand reamer has a long lead taper so could be used to create a press fit - it's how locating dowels are fitted. All you have to do then is create another press fit in the worm so there's another tight tolerance. It's just not worth it. The motor would have to be som...
by davebradwell
Sat Jun 06, 2020 7:38 pm
Forum: Tools and Techniques
Topic: Motor Shorting
Replies: 32
Views: 1401

Re: Motor Shorting

It's interesting to reflect that the vast majority of 4mm scale loco models have normal pick-ups despite these things performing poorly and sometimes being very difficult to install. All the "greats" use them and always have. Whatever their problems everything else can throw up that biggie...
by davebradwell
Sat Jun 06, 2020 4:06 pm
Forum: Steam Locomotives
Topic: Bachmann B1
Replies: 100
Views: 7303

Re: Bachmann B1

It depends whose Pacifics - the LNER types have a Cartazzi rear truck which places an absolute limit on swing, unless you start widening it, of course and I think my own A1 has an extra 0.3 per side at the very rear but the double bend is correct width. I suspect a Stanier or Bulleid rear truck disc...
by davebradwell
Tue Jun 02, 2020 7:54 am
Forum: Flymo748
Topic: Airfix 48xx with High Level Kits chassis
Replies: 78
Views: 2460

Re: Beer and Buckjumpers

I hope you number the axleboxes, too.

DaveB
by davebradwell
Mon Jun 01, 2020 8:13 am
Forum: Steam Locomotives
Topic: Bachmann B1
Replies: 100
Views: 7303

Re: Bachmann B1

That's looking much more encouraging. The head of the rivet in the eccentric rod/return crank joint will probably need the front filed flat to clear the cover casting. I don't go for a full soldered joint when fitting this and make do with a quick tack with 145 each side. Clean casting joint face ca...

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