Search found 582 matches

by billbedford
Tue Jun 18, 2019 4:06 pm
Forum: Tools and Techniques
Topic: Track cleaning
Replies: 56
Views: 1816

Re: Track cleaning

zebedeesknees wrote:Full springing of all stock really helps; battery powered traction solves the problem.


As does steel rail.
by billbedford
Tue Jun 18, 2019 4:05 pm
Forum: Tools and Techniques
Topic: Track cleaning
Replies: 56
Views: 1816

Re: Track cleaning

by billbedford
Fri Jun 14, 2019 11:36 am
Forum: Tools and Techniques
Topic: laser welding
Replies: 11
Views: 464

Re: laser welding

I think TIG type spot welders would be better for what we do, even if the joint has to be flooded with solder afterwards. The laser welders would be useful where a small joint needs to be made with only local heating.
by billbedford
Fri Jun 14, 2019 9:46 am
Forum: Tools and Techniques
Topic: laser welding
Replies: 11
Views: 464

Re: laser welding

Having seen this video

,

I'm not sure that laser welding is something that has any relevance to our model making.
by billbedford
Fri Jun 14, 2019 8:34 am
Forum: Tools and Techniques
Topic: laser welding
Replies: 11
Views: 464

Re: laser welding

by billbedford
Thu Jun 13, 2019 8:14 am
Forum: Tools and Techniques
Topic: laser welding
Replies: 11
Views: 464

Re: laser welding

I’ve just seen on BBC’s “Repair Shop” a laser welder being used by a jeweller - looks just the job for fine “soldering” work. Only problem could be the cost... but laser cutters have reduced in price a great deal so there may be hope. Has any one had experience with this technique? See this from ab...
by billbedford
Thu Jun 13, 2019 7:51 am
Forum: Wagons
Topic: Waisted bearings for Bedford sprung W irons?
Replies: 23
Views: 1133

Re: Waisted bearings for Bedford sprung W irons?

Triode wrote:Is it necessary to do this while the W-iron etch is still flat (i.e. before the ends are folded up)?


Yes, you need the axlebox in its ultimate position, so that you can use the oval cutout in the w-iron as a 'pattern' for the hole in the axlebox.
by billbedford
Tue Jun 11, 2019 12:53 pm
Forum: Guest Book
Topic: REF: Rail wheel profile and "to do" list update
Replies: 25
Views: 1559

Re: REF: Rail wheel profile and "to do" list update

My position is that Nadel's formula is proven and the consequences are that models should be heavy (or at least heavier) compared with the worst expected impulses from bumpy track, and evenly and equally loaded per wheel. Looks like confirmation bias -- We like heavy stock, therefore heavy stock wo...
by billbedford
Sat Jun 08, 2019 4:18 pm
Forum: Wagons
Topic: Waisted bearings for Bedford sprung W irons?
Replies: 23
Views: 1133

Re: Waisted bearings for Bedford sprung W irons?

2. Find a way of making a slot in the cosmetic axlebox such that it can be fixed to the axleguard (W iron) but still leave freedom for the bearing to move within. I can see that forming a 2mm wide slot for this purpose can be difficult, and that using a drill bit larger than 2mm to create the neces...
by billbedford
Sat Jun 08, 2019 12:02 pm
Forum: Wagons
Topic: Waisted bearings for Bedford sprung W irons?
Replies: 23
Views: 1133

Re: Waisted bearings for Bedford sprung W irons?

Thanks for the replies. I’ve attached an image which hopefully illustrates the problem. Too little of the 2mm side portion of the bearing protrudes through the slot (due to the use of spacing washers on the inside). As a result, the axle end can move from side to side in the slot instead of just up...
by billbedford
Tue May 14, 2019 7:36 am
Forum: Guest Book
Topic: RE: Chassis Speed Building
Replies: 15
Views: 1400

Re: RE: Chassis Speed Building

I'm thinking minutes, not hours, for a properly designed chassis KIT. Every thing that is operational pre-shaped and fits what it is supposed to fit to. No parts to fettle, no parts or partial assemblies that need adjusting or measuring and cutting to size. But you must have an accurate wheel press...
by billbedford
Tue May 14, 2019 7:20 am
Forum: Chassis and Suspensions
Topic: Chassis Speed Building - Records and Methods
Replies: 17
Views: 920

Re: Chassis Speed Building - Records and Methods

I'd ask a bunch of 20 year old Chinese girls to do it...
by billbedford
Sun May 12, 2019 9:12 am
Forum: Coaches and NPCS
Topic: Carriage identity query
Replies: 17
Views: 926

Re: Carriage identity query

nf.newling wrote:Sorry guys, I see 8 equally sized windows and droplights only in the end doors - C70 for me.


Look at the deep shadows at the tops of the spaces between the windows, just the same as the end droplights.
by billbedford
Sat May 11, 2019 10:30 am
Forum: Couplings
Topic: Bill Bedford etched coach couplings
Replies: 2
Views: 299

Re: Singles and suspension

Sorry, I can't send this by PM.

E007-2 Instructions.pdf
(11.9 KiB) Downloaded 63 times
by billbedford
Sat May 11, 2019 8:12 am
Forum: Couplings
Topic: Bill Bedford etched coach couplings
Replies: 2
Views: 299

Bill Bedford etched coach couplings

Slight diversion - do you have a .pdf you could send me of the instructions of your now withdrawn carriage set couplings? Lost mine Mike You mean the cast brass ones? I don't think there were ever any instructions for them. You just bolted them on one coach and hoped for the best. I am working on s...
by billbedford
Sat May 11, 2019 7:47 am
Forum: Chassis and Suspensions
Topic: Singles and suspension
Replies: 14
Views: 617

Re: Singles and suspension

With a 3 mm difference in axle centres you should be able to arrange a CBS that goes over the carrying axles and under the driving.
by billbedford
Fri May 10, 2019 8:03 am
Forum: Chassis and Suspensions
Topic: CCU for LMS 6-wheel Bogie
Replies: 9
Views: 540

Re: CCU for LMS 6-wheel Bogie

Mark Tatlow wrote:I will use one of my sliding axle solutions


Your sliding axle solution? You mean this one? Note the date.
by billbedford
Mon Apr 22, 2019 8:07 am
Forum: Track and Turnouts
Topic: rail/wheel profile - prototype has problems too
Replies: 22
Views: 1659

Re: rail/wheel profile - prototype has problems too

An Easter Day debate revolves in my mind Will. I don't see how the scaling effect of physics favours us particularly. A 16 ton wagon scaled down 76.2 x 3 times gives us 32g 16 tons was the permitted load. The tare was 7-8 tons. So a mineral wagon could weigh anything between 7 and 26 tons, and the ...
by billbedford
Thu Apr 18, 2019 9:01 am
Forum: Jeremy Suter
Topic: Turning a chimney
Replies: 19
Views: 1580

Re: Turning a chimney

Very clever, but using the ball mill will give the wrong shape to the flare. Deeley Chimney.jpg Note the difference in radius of the flare on the two views. While having a constant flare radius would not be too noticeable on modern locos with large boilers, it will stick out like a sore thumb on old...
by billbedford
Fri Apr 12, 2019 8:35 am
Forum: Starting in P4
Topic: P4 wagon Compensation(springing)
Replies: 31
Views: 2126

Re: P4 wagon Compensation(springing)

davebradwell wrote:I bought some bearings from Markits last year and I'm due to order some more. Why should he suddenly make them a different depth?


Tool wear, backlash in the machine and the fact that the datum for the depth is the back of the flange?
by billbedford
Wed Mar 20, 2019 1:58 pm
Forum: New Products
Topic: SCC - Sparkshot Custom Creations
Replies: 263
Views: 41934

Re: SCC - Sparkshot Custom Creations

We should try access the tartan paint technology that figured so often in the Beano and Dandy.
by billbedford
Tue Mar 19, 2019 8:29 pm
Forum: New Products
Topic: SCC - Sparkshot Custom Creations
Replies: 263
Views: 41934

Re: SCC - Sparkshot Custom Creations

making things is what some of us enjoy. Otherwise why not just do what so many do, and simply get our models from the wide range of RTR products available. I don't envision the end of etched kits or scratch building or even modeller produced etchings for scratch building. If prototypical accurate d...
by billbedford
Mon Mar 18, 2019 1:39 pm
Forum: New Products
Topic: SCC - Sparkshot Custom Creations
Replies: 263
Views: 41934

Re: SCC - Sparkshot Custom Creations

I note that Etched Pixels sell 1:148 kits with etched sides and a printed armature. I think these are the original Ultima armatures. They are a clear injection moulded box, which is a lot easier to produce in 2mm scale than 4. A printed armature would not be very much cheaper than a fully printed c...
by billbedford
Sat Mar 16, 2019 12:47 pm
Forum: New Products
Topic: SCC - Sparkshot Custom Creations
Replies: 263
Views: 41934

Re: SCC - Sparkshot Custom Creations

I prefer separate door and commode handles. So a kit with holes for these (or markers showing where to drill) would be my choice. Commode handles can be made from wire, not too difficult if a folding jig is part of the kit. Door handles are easily made from brass lace pins with a file. Now here's a...
by billbedford
Thu Mar 14, 2019 10:59 am
Forum: New Products
Topic: SCC - Sparkshot Custom Creations
Replies: 263
Views: 41934

Re: SCC - Sparkshot Custom Creations

On the subject of what is in a kit etc, etched kits come with separate door handles which are not usually overscale so why not printed vehicles? After all, such will require a number of other components, for example grab handles, to complete so why not door handles? Because the whole point of print...

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