FBGR Loco No.5

FBGR · Post by **FBGR** » Wed Oct 10, 2012 7:37 pm

I said at the time that I fancied something continental to pull my new P-Way train (see http://gardenrails.myfreeforum.org/abou ... highlight= ), and after some thought and looking at pics on the Internet, I chose a LKM class Ns2 diesel locomotive. These 6 ton locomotives were produced between 1950 and 1952, and only a handful would appear to have survived into preservation. The model was succeed by the class Ns2f, which had external rods, but retained many other details. The Ns2f was produced from 1953 to 1960, and quite a few of these have survived, many in near original condition.

Although I had seen pictures of models of the Ns2 at various scales, I don’t think I have seen one at 16mm/ft, and the fact it is a 4wDM (i.e. not having external rods) would make it easier for me to model.

Prototype drawings and pictures were available on the net, and I wanted to use the radio control equipment recovered from the unsuccessful attempt to fit to it our locomotive “BLUE”.

First was to mock up the general shape in Google Sketchup and then in card to get a general idea of the shape and size and make sure that all the bits could be fitted in.

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The Sketchup draft

Once I was satisfied that it should all be possible, I made the frame. Now-a-days I use Plasicard for just about everything, so there was no thought given to using anything else.

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Main Frame – the filled round hole was from my first thought of mounting the motor vertically, but it will now be fitted horizontally. It is likely that some more holes will have to be formed as I progress, and possibly some form of catches for the removable bonnet.

JOhn

90733 · Post by **90733** » Wed Oct 10, 2012 7:42 pm

Exquiste work, I look forward to the result!

Annie · Post by **Annie** » Fri Oct 12, 2012 6:37 am

Very nice. Are those axleboxes your own work? - because if they are they are very fine pieces indeed.

FBGR · Post by **FBGR** » Fri Oct 12, 2012 1:28 pm

Thanks Annie.

Everything is plasticard, mostly from sheets of various thickness, plus a few small (or very small) bits of rod (both round and hexagonal) for bolts etc.

JOhn

FBGR · Post by **FBGR** » Tue Oct 16, 2012 9:01 am

Chassis now made.

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This was my third attempt, all the time learning (and taking notes on what works and don’t); at least the material is nice and cheap. I will probably have to add some more holes, and maybe even insert a notch or two (or maybe move onto a fourth attempt).

JOhn

TonyW · Post by **TonyW** » Tue Oct 16, 2012 9:27 am

Annie:75730 wrote:Very nice. Are those axleboxes your own work? - because if they are they are very fine pieces indeed.

I agree, they are superb!

Si · Post by Si » Tue Oct 16, 2012 12:06 pm

Very neat job of the chassis, and I third the comments on the axle boxes - amazingly good detail.

FBGR · Post by **FBGR** » Tue Oct 23, 2012 9:22 am

Bonnet now made

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All in plasicard of course, although I did use some wire for the hatch handles. Inspection of various photos of prototypes showed them as all slightly different when it comes to exact locations of bolts and fittings. As a result the some of the finer detailing points are a bit of a hybrid and may not be representative of one particular locomotive.

John

Narrow Minded · Post by **Narrow Minded** » Tue Oct 23, 2012 9:30 am

Marvelous

This is going to look stunning!

williamfj · Post by **williamfj** » Tue Oct 23, 2012 11:01 am

Wow that is looking fantastic so far!

Annie · Post by **Annie** » Tue Oct 23, 2012 11:01 pm

That is seriously good modelmaking. Very very nicely done.

90733 · Post by **90733** » Tue Oct 23, 2012 11:07 pm

Very, very, very, impressive!

FBGR · Post by **FBGR** » Tue Oct 30, 2012 8:47 am

Cab now made

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Again all in plasticard. The location of some of the workings may have varied over the years of production, and the main drawing I was using had a lot of hidden detail cluttering up the views. It is possible that some of the pictures I had seen were of locomotives that had been modified over the years, and the couple of good shots of the inside of a cab that I had had the hand brake on the back sheet. In the end I reverted to putting in all the controls that would have been fitted to a basic locomotive of this vintage (handbrake lever, forward/reverse gear lever, change of gear (first and second) wheel, throttle lever, sanding lever, and oil pressure gauge), and then checking to see if these fitted in with any pictures and drawings that I had, rather than the other way round.

JOhn

Narrow Minded · Post by **Narrow Minded** » Tue Oct 30, 2012 9:24 am

Top job!

FBGR · Post by **FBGR** » Tue Nov 06, 2012 9:10 am

Assembly – well the bits that show

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At least the out sides is all together, but the insides is another story -

I wanted to make all the controls and battery etc. in modular form, so that it could be removed, rebuilt or replaced as necessary (and could be useful for similar future projects). My first effort did not have quite enough room for the batteries. My second effort looked promising, but during initial testing at home I managed to damage the drive worm and cog – the four wheel drive gave is so much traction that the worm/cog partly stripped before any wheel slip (it’s funny how I always seem to damage the something that I don’t have a spare). So I have sent for a replacement (and a spare). When these arrive, and when I have re-assembled these into the chassis, I will be able to take it all down to the FBGR for a proper test.

Only then will I be able to see if a Mark 3 control module is going to be required.

In the meantime while I wait for the postman to deliver, I have started work on another brick building.

JOhn

Narrow Minded · Post by **Narrow Minded** » Tue Nov 06, 2012 9:30 am

Just Lovely!

I wish you could get that into a mould and knock out some castings!

Annie · Post by **Annie** » Tue Nov 06, 2012 9:37 am

You definitely win the prize for best scratchbuilt diesel.

I haven't seen quality work like that in plasticard for a long time.

Narrowminded, I agree about the castings. Everything I look at on this model is good enough to be a casting master.

Si · Post by Si » Tue Nov 06, 2012 10:48 am

Amazing looking model.

Might I ask whose bits and bobs you used for the four wheel drive set up?

As an aside: castings of it? No, 3d laser scan it and then you can tweak and print off copies to your heart's content

FBGR · Post by **FBGR** » Tue Nov 06, 2012 10:59 am

Thank you for the comments, Narrow Minded, Annie and Si.

Yes the outside is coming on quite nicely, but I have a tray of lots of bits made and rejected. Some parts I make over and over until I am satisfied, but the material is cheap, my time is free and it is better to start again than trying to repair mistakes. Keeping notes as I go along also helps not make the same mistake twice (some of the time).

I do wish the same could be said for the progress on the inside.

My ineptitude with the control module may still stall the project – I think it should work, and it works for bit when testing at home, but when I get it down to have a proper run on the FBGR it wont properly.

I’ll have one more go when I’ve fitted the fresh worm and cog, and if it don’t work then I shall have to contact the radio control manufacturer.

Si – cogs and chain were from http://www.motionco.co.uk/

JOhn

Narrow Minded · Post by **Narrow Minded** » Tue Nov 06, 2012 1:30 pm

Keeping notes as I go along also helps not make the same mistake twice (some of the time).

:lol:

I can totally with you on this one! :oops:

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