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The Derby Line, Gladiator LNER O4/3


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Hi Ozzy - the loco wheelbase?

Yes the loco coupled wheel base.

 

The Snowhill 2-8-0 has an extended wheelbase.

IIRC the coupled wheel base is 2mm too long.

All I was thinking about was if you were going to use any milled rods!

 

OzzyO.

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The WD tenders are distinctive by their plain slab sides, but one noticeable feature are the row of bolts along the bottom edge that hold the tank to the frames. These are not represented in the kit and with no hope of me measuring accurately 28 holes, I knocked up a drilling jig from scrap fret and tested the hole position on some other scrap. The edge of the 'butting' piece was then filed away until the hole position was correct. It's shown hooked over one the 'bolts' made from 0.7mm brass wire:-

 

 

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So I'm buzzing along with these tenders now, the axleboxes and springs consist of several parts, so there  is a days work in cutting off sprue, cleaning up and fitting 16 of them. I soldered them all in place with 145 degree solder.

 

 

 

 

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Thanks Peter - well, it's not quite the slot and tab of an MOK, but everything fits, you just have to make sure you check the drawings/pictures to get things in the right place. The main thing is that the castings are all in brass, which I much prefer working with than white metal.

 

Regards

Tony

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  • 2 weeks later...

Thanks Ozzy - I have the MRJ articles with all the back ground, I'll be using the rods in the kit..

The front section of the rods on the real thing was offset inwards to provide clearance behind the crosshead (it's not just modellers who have that problem). That feature is replicated in the rods in the kit, but not in any milled rods that I know of. The slight stretch in the coupled wheelbase (and the loco as a whole, so as to keep all the parts in the same relative position) is a consequence of the compromises brought about by overscale flanges and limits on the minimum dimensions for various etched parts.

 

Regards,

 

Jim

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Thanks Jim -

 

The frames are progressing well. I had a little difficulty with the hornguides, until I worked out I force the fold further out by using the edge of a ruler to control the bend. The majority of the bearings then just dropped in without  any fettling. The half etch tab is on the outside of the fold.

 

 

The frames - with one inverted. Brake fitting next.

 

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Thanks Jim -

 

The frames are progressing well. I had a little difficulty with the hornguides, until I worked out I force the fold further out by using the edge of a ruler to control the bend. The majority of the bearings then just dropped in without  any fettling. The half etch tab is on the outside of the fold.

 

 

The frames - with one inverted. Brake fitting next.

Interesting - I never thought of bending them that way. I just folded them over and then squeezed the fold up with a pair of pliers.

 

Jim

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Interesting - I never thought of bending them that way. I just folded them over and then squeezed the fold up with a pair of pliers.

 

Jim

 

Jim, are you saying that you folded the horn guides up with the folds to the outside?

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Jim, are you saying that you folded the horn guides up with the folds to the outside?

Ozzy -

 

No - the folds are with the half-etch to the inside as usual. What I meant was that I just folded them as far as they would go by hand, which was about 150 degrees, and then used a pair of pliers to finish the fold off to the full 180 degrees. Not terribly elegant, but it worked. It looks like Tony may have found a better way of doing it which I shall have to explore further when I start the next kit in my build queue.

 

Jim

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I spent yesterday fitting the brakes and making up the cylinders. The wrappers in the kit are 20thou brass and as I had to consign my exploding gas torch to the bin, I only had my plumbing torch to anneal them. So instead I made my own wrappers from 12thou brass, which is easy to form cold. I've been reading Geoff Holts book!

 

 

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I spent yesterday fitting the brakes and making up the cylinders. The wrappers in the kit are 20thou brass and as I had to consign my exploding gas torch to the bin, I only had my plumbing torch to anneal them. So instead I made my own wrappers from 12thou brass, which is easy to form cold. I've been reading Geoff Holts book!

Tony,

How do you propose to secure the cylinders to the frames? I remember designing the assembly with a tab on the back face so that once they were hooked into position, they could be secured with a 10BA screw down through the folded in tab on the frames.

 

Jim

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Hello Jim -

 

I'm still thinking about that one, I like to make the cylinders removable on my models and seem to have achieved it so far. I'll let you know what I come up with!

 

Regards

Tony

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Hello Jim -

 

I'm still thinking about that one, I like to make the cylinders removable on my models and seem to have achieved it so far. I'll let you know what I come up with!

 

Regards

Tony

Tony,

 

I am trying to work out what you have done, which is, I think, to have left out part 162. As designed, the cylinders would have been removable, although I didn't intend it that way. The tab and screw method was simply a way of attaching them without the need for a non-prototypical frame stretcher right where the smokebox saddle would have been. I'll wait to see what you do some up with.

 

Jim

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Hi Tony,

 

thank you so much for your WD 2-8-0 build. I will use it as a reference for my 2-10-0, which I bought recently from Roxey. I will build it as a Greek Version. I am thinking of getting the Premier Motion (coupling rods etc.). What do you think?

 

Cheers

Andreas

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Hello Andreas -

 

I am glad you are enjoying the build. I have used Premier rods in the past on other loco's although I did not see a need for them in this case. As long as you are prepared to put the time into cleaning and polishing up the rods, they should be fine.

 

Regards

 

Tony

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Andreas

 

Premier's rods will be to exact scale measurements. If the kit designer has slightly changed the wheelbase, as he has done with the 2-8-0, then the Premier ones will not fit. Ask Jim Snowdon, (I think he designed the kit) he is visiting this topic and has made a few comments already. Hope this helps.

 

Jeff

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Hi Jeff,

 

that was what I was thinking of, these changes at the wheelbase. I wrote an e-mail to premier and I am waiting for an answer.

 

Sorry Tony for sidetracking your topic... :umbrage:

 

Cheers

Andreas

Andreas,

 

If the Premier rods are milled to the scale axle centre distances, they will not fit. In any case, the front section of the rods on both the 2-8-0 and the 2-10-0 is of a reduced section on the prototype in order to win clearance behind the crosshead. That is reproduced on the etched rods in the kit for exactly the same reasons, but not, as far as I am aware, on the milled rods produced by Premier.

 

Regards,

 

Jim

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