Blefuscu

As an aside, I've just had an email back from the British Library regarding that book. TLTR: Technically, they are still in a bit of a mess. Last time I was there to look at some OS maps, I had to put a paper request in and come back in an hour - but this is in another building and will take two days.

A little update to reflect my new found knowledge. Some semblance of a chassis is beginning to appear too.

Just a note on this diagram. The reproduction of AB104 in my pdf of book 200 from the Barrowmore Group is pretty poor. However, the older diagram BR164 is much clearer. ( Available from http://www.barrowmoremrg.co.uk/BRBDocuments/CS/Coaching_Stock_N3_web.pdf ) Found some nice images here showing the roof here: https://coaches-library.weebly.com/mk2a---bfk.html

I'd have probably missed that, thanks! Finding clear images of roof vents can be tricky.

Yes, I've got those thanks - they are a good starting point. I use them for scale, and the layout of main features.. and I keep a printed copy next to me to make notes on.

I think all printed roofs suffer from this, and it's not a bad idea. In theory, it's not difficult to do either. I simply cut the vents away from the model instead of joining them.... although they have to be scaled up first to create a small gap, and each cut needs a bit of cleaning up. I was thinking about it for the 313s, as there were 2 options for the vents there. Ultimately, I went in favour of trying to sand around the vents, instead of more tiny things to print/scrape off the FEP. The other issue is version control... if I have to make a change to the body later, that needs rippling out to every version I made. I think all printed roofs suffer from this though, and it's not a bad idea... but i might just see how the vented version turns out before I try the vent hole version.

Excellent, thanks for the confirmation 👍

This is the first draft of the BSO. I believe, externally, it's the same coachwork as the BFK, is this the case? The windows and doors are in place, but no steps or gaps under on the doors yet, and I need to shuffle the roof vents around...

I think this refers to single sided or double insulating bushes on the axle. In either case, mine were beidsetig. I had a look back at my order, I paid... 50 TT wheel sets for Tillig / BTTB - Size: 8.3, Insulated: on both sides 1 piece €44.96 Shipping Worldwide / Worldwide €12.00

My feeling is that I'd rather have the 3D models in my library, even if Hornby did make a Mk2a. I'll probably even do my own HST at some point! Subsequently I don't really follow the releases, but I imagine they might be waiting a long time for a 2a otherwise. Yes, if I get it right, I hope it will have a wide appeal across TT, and other scales. There are possibly scratch builders in OO, who'd prefer to do there own thing too. I was surprised how many people are printing the 313 in OO. I thought that would have been catered for. I don't think I'm far off the TSO and the BSO bodies. I'm thinking about releasing them soon on an 'attribution license', so anyone can access, share, and modify them as long as they credit the original file.... and give an option for donations rather than charging anything for the files themselves. I just think of all the resources that I used to design them, that people have collated and share for free, and it seems like a better way to give something back. I also benefit from giving other people the opportunity to develop the files. That's my thinking anyway... this weekend I've been tasked with oiling two sets of garden furniture so not much progress happening !

Ah, I see now! Thanks again.

I haven't got my notes with me, but I think I came to a similar conclusion... however, I was drawn to that bulk bag of 50 on a £/wheelset basis.

Thanks again, that's really useful. I'll add a BFK to the list. I'm still a bit confused about the SOs. I can only find 11 Mk2 SO's E5229-38, E5249, and no Mk2A or Mk2D

That's good to know... air-con stock is easier to print too. I like the mk2d rakes with the RBR in the middle though Something that confused me regarding the carriage workings was the reference to SO's throughout the document - yet the coaching stock book and Hugh Longworths book both suggest SO's were pretty thin on the ground at this point, so I'm assuming TSO's were used there?

Thanks, I didn't make a note of my sources ( I think it may have been the LNER forum? or here even?) but I had noted the RKB/RUO rake was 1978... which would make sense. I just hadn't realised they stopped then. I guess the moment I introduce the HST it becomes invalid then, so I might put those two on the back burner... or I slip backwards a couple of years. I've just remembered that I have a copy of 1980 Coaching Stock, I think that's where I picked up on them being likely Mk2D. You post gave me pause for thought regarding the quality of my original notes, and I've had a look at the 1980 ECML carriage workings. I don't pretend to find these documents easy reading... but I think I've found a mk2a rake BSO-SO-SO-SO-RBR-SO-FK , and a mk2d/f rake SO-SO-SO-SO-RKB-SO-FK-BG that would look plausible? Ultimately, I suppose, I only need to convince myself that it looks right - but i'm enjoying the research.

A little bit of progress on the mk2a TSO this weekend... None of the handrails will be on the final STL, they are just markers for the wire holes.

If you are going to print a container upside down, I would recommend putting a small hole in the bottom. This is so you don't inadvertently create a 'suction cup' effect under the model.

Sorry, I haven't lined those axles up very well have I. But I hope that's useful. I didn't have my glasses on and was more worried about them rolling away! Edit: one more thing. I believe the mosskito 9.1 wheels have a deeper dish to accept etched/printed spokes.

Yes, those ones. Here's a comparison of sorts... The WHLP80 are also from the Light Railway Stores... I forgot I had those :')

I've sent a message to admin...

No problem... it's useful to see what your screen looks like. I can see the problem now, I have no envelope next to my bell. I don't think my forum account has any kind of mail functionality, and I don't see a way to turn it on.

I can't seem to send messages either... I can't even see the option to send one. Nor can I find any settings regarding direct messages either - so I'm stumped there.

That's the one! Thanks for the suggestion, I only really mentioned it because I knew it would come up at some point. Not that I would say no to a copy, but I have all the BR diagrams, and there are quite a few exterior images around (now that I'm getting slightly better at identifying them) so I think I'll get away without it. If I were really stuck, a trip out to a surviving mk2a would be better value... Might be a different story if I were working in a larger scale, or thinking about the interior. That said, in a very direct way, you and other people are already contributing to my 'research' when you buy my .stl files off cults. Cults totally paid to get the 313 running. There's currently enough in the kitty for the book... but I still need waterslide decals made up for the 313, not to mention a load of plywood and some track at some point, and my printer died last month so that's pushed everything down the list. This month's a bit quiet but it usually brings in around £70 a month, which, LCD screens aside, usually keeps the project ticking over.

Thanks! Those are cracking photos, really useful! Initially, I was intending to skip over b & c, but it turns out as I'm becoming aware of these differences I might as well try and fill in the gaps, even if I don't use them myself. That book on mk2 coaches would also be really useful, but it's too expensive for me.

This is going to take a while, so don't be too vigorous or you'll get cramp! I haven't touched a vertex since posting that image... I've been looking at photo's of the gutters all evening, and other minutia, instead. Mostly the gutting though! As far as I can tell, from mk2b onwards the roof has a wrap around guttering, and the 2a doesn't. To make matter worse I found an image of a 55 pulling out of Doncaster with a rake comprised entirely of mk1 coaches in 1980. I'm already modelling the mk1 RB and BG, so I should probably do those coaches too. I can see this getting out of control... Accuracscale have good images of the underneath of their 2b and 2c models... but I expect they will differ a bit from the 2a and 2d I'm doing. I know some of the aircon stuff goes down there.