7mm The next project. (B1)

Steph Dale

Steph Dale

Western Thunderer
Mick, Jon,

I suspect that all the existing lost wax is available now, were it to be ordered. The issues we face for reintroductions are mostly around the resin/ whitemetal castings and my time.

If you contact @Dikitriki, I'm sure he can advise the current position as regards LNER valve guides.

Steph
 
Eastsidepilot

Eastsidepilot

Western Thunderer
images



Beautiful Mick!

JB.[/QUOTE]

Oi ! who you calling beautiful......
 
mickoo

mickoo

Western Thunderer
Tim cheers,

Compensation probably not as the beams will pass right through the main bearing section and that'd mean cutting big holes in there which will reduce it's strength.

Springing, not sure, the bogie is designed around the smaller 5/32" axles from slaters and as far as I know only top hat bearings exist for these, no blocks as such. If you can get small axle boxes that'll fit inside the horn cheeks then you could cut away the frame that holds the top hat bearing and spring the axle box. A plate across the cheeks at the top and a spring underneath might work, or use the holes in the frame work for CSB pegs and have individual CSB wires on each axle box.

I haven't planned on any provision for springing, it's not on any of the existing kits for bogies, most people seem content with top hat bearings and a fixed set up I'm afraid.

MD
 
mickoo

mickoo

Western Thunderer
adrian said:
:bowdown: :bowdown: a stunning piece of art. I hope someone is cracking on with some castings for it.

After a little due diligence I have found evidence of a B1 at Gloucester :cool:
Repairs to 'Foreign' Engines at Gloucester Barnwood - Gloucestershire Railway Memories

So I think my plans for a Midland region shed can justify a B1 - I'd better start saving!
Click to expand...
Thank you :cool:

Castings, yes, I am; next year that'll be the first target to get to grips with. They need to be done next as there's some fundamental changes to the build and running off the ALPHA etches can't be done until the castings and their feasibility for casting has been accomplished.

The primary one being the smoke box saddle which has a massive impact on the whole front end and how it all goes together. The current one is etched and whilst practical isn't the easiest piece to form and assemble, a nice crisp white metal version would be much better suited here.

However all the current front end is held in and secured to the etched saddle, it's basically the core foundation stone of the whole front end. Changing to white metal requires a rethink and design change so that the saddle no longer becomes that corner stone. That all of course then requires a change to the main frames as they will need a new fixing at the front end and the stepped interface (scale width front frames.....O fine main frames) will also need to be re developed.

B1's got everywhere, no one has an excuse not to model one, like Black 5's y'all simply have no excuse not to have one....unless you model the dark ages ;) B1's were quite common on LMR sheds in the later days, mostly cross country services but also holiday specials.

MD
 
adrian

adrian

Flying Squad
mickoo said:
Castings, yes, I am; next year that'll be the first target to get to grips with.
...
The current one is etched and whilst practical isn't the easiest piece to form and assemble
Click to expand...
My apologies, my mistake - I didn't mean to pressure you - I thought that the castings were someone else's department.

I'd be more than happy with the etched smokebox saddle but then again being quite happy scratch-building I suppose that I'm on the edge of your target market.
 
mickoo

mickoo

Western Thunderer
adrian said:
My apologies, my mistake - I didn't mean to pressure you - I thought that the castings were someone else's department.

I'd be more than happy with the etched smokebox saddle but then again being quite happy scratch-building I suppose that I'm on the edge of your target market.
Click to expand...
No need to apologise, pressure....way way past that point months ago :D

The problem with the saddle is the curved flange plate, to be scale it has to be 0.6 mm thick which in NS can be (is!) a bear to roll, currently it's one layer at 0.38 and a half etched overlay with bolt detail. The other option is brass for that one part which can be annealed and rolled much easier.

Personally I'm 100% in the etched camp myself, but recognise a great many are not; so if you're going the etched route then it had better be really simple and bullet proof construction.

Either way I'll let it simmer for a few weeks before proceeding to the next phase.

MD
 
mickoo

mickoo

Western Thunderer
Dikitriki said:
Could always provide both.....

Or does that mean too much of an alteration to the other etches?

R
Click to expand...
Could do Richard, it'll mean a tweak to what we have now as the rear wall is a fold up of the base, the front wall is a tab and slot into the base.

Mind the rear wall is easily removed by bending back and forth on the half etched fold line, thus leaving the base totally clear to drop a white metal one in, though the other fixings will still need a tweak to suit both options. Not an in surmountable issue all told.

MD
 
Last edited:
Ian@StEnochs

Ian@StEnochs

Western Thunderer
Even Ayr shed (67c) had three allocated in the dying days of steam.

They were not well liked by the locomen due to their, reputedly, ineffective brakes, a common complaint made against anything different. Notwithstanding one became the shed pet and was kept in bulled up condition and did a few rail tours and the like.

Ian.
 
Martin Shaw

Martin Shaw

Western Thunderer
I have a friend who was a fireman at Dunfermline where he tells me they had five allocated, sixty years later he can still reel off the numbers. He reckons they were as good as a black 5 when newly overhauled, but became very rough after 60000 or so miles. Very nice piece of work Mick, I can see one approaching my workbench in due course.
Regards
Martin
 
You must log in or register to reply here.
What's New?
Top