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Building a G.W.R. Castle + more in 7mm OF from a JLTRT kit restarts on P.88 by OzzyO,


ozzyo

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Hello all,

 

I'm back on with the Castle build, looking back through the thread it looks like I've only posted one photo of the build, I thought that I'd posted more. After all of the frames were soldered together the first job was to remove all of the spring detail, like this,

post-8920-0-11727800-1404945869_thumb.jpg

 

After these parts are removed the frames look like this,

post-8920-0-78606400-1404945875_thumb.jpg

 

Then it's a matter of drilling a few hole,

post-8920-0-85879400-1404945928_thumb.jpg

 

After cutting out the front and centre horn-gaps the frames were split apart,

post-8920-0-97461800-1404945949_thumb.jpg

 

For these frames I'm using the widest frame spacers, but before I use them I have to remove some bit of them as I'm using the SDK,  modified on the left,

post-8920-0-94723000-1404945979_thumb.jpg

post-8920-0-07605700-1404945999_thumb.jpg

 

The main parts for the rear part of the frames laid out, I had a bit of brain fade in that I soldered two nut on the inside of the front frame spacer why I don't know as these go on the front set of frames,

post-8920-0-52450900-1404946023_thumb.jpg

 

Starting to assemble the frames,

post-8920-0-98412700-1404946042_thumb.jpg

 

To help keep the frames square I made some turned jigs to do this,

post-8920-0-84748200-1404946066_thumb.jpg

 

Getting ready to solder the frames up, no I have not totally lost the plot, the front frame spacer is there to help to keep the frames at the correct space while I solder rear two spacers in position,

post-8920-0-94903200-1404946088_thumb.jpg

 

Well we're up to the parts that have no name!

post-8920-0-28365000-1404946108_thumb.jpg

 

And in place in the frames, do you know what they're for yet?

post-8920-0-67242800-1404946180_thumb.jpg

 

The three sets of rear frames up to now,

post-8920-0-14080700-1404946200_thumb.jpg

 

The starting point for the front parts of the frames,

post-8920-0-23126700-1404946225_thumb.jpg

 

The starting point for two of the front sets of frames, these are for the joggled frames,

post-8920-0-73599600-1404946248_thumb.jpg

 

Starting to bend up the sides, the two joggled frames are on the outside,

post-8920-0-14367000-1404946298_thumb.jpg

 

The frames from the outside, note the different rivet patterns,

post-8920-0-34396800-1404946318_thumb.jpg

post-8920-0-52972400-1404946337_thumb.jpg

 

The front frames at the close of play today,

post-8920-0-86318100-1404946359_thumb.jpg

 

OzzyO.

 

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Hello all,

 

Sandy has painted his County in green,

attachicon.gifpost-7733-0-75040200-1402841048.jpg

 

and it looks very nice.

 

i have panted my customers one in work shop grey,

attachicon.gif300 002.jpg

 

"My" one could have  been painted in black, I would have liked to have primed it in black, it then would have been the second third 7mm loco that I have painted in black , all the rest have been in grey with about four in red primer, two streamlined Duchesses, one non-streamlined one, and one Furness Railway Baltic tank .

 

I do like black engines,

Honest.

 

Do you want to see one of my black locos?

 

You must hit more than 5 likes to see this loco, if you hit less than this you only see the baby loco, if you hit more than 10 you can see both of them. After 10 you can come and see the workshop!!!!!!!!!!!!!!!!!!!!!!!! 

 

OzzyO.

 

How much to take it off your hands? :P

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How much to take it off your hands? :P

 

Er, take what off my hands?

 

If your talking about the County, it was never for sale as it was not my loco to sell.

 

If you would like me to build you one PM me for the cost.

 

OzzyO.

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OzzyO

 

Not having seen it mentioned in the text are two of the models be to be constructed to S7 standards and the third to normal 7mm?

 

Pete

 

As the title says OF for all of them, two of them are to replace old ridge frames with new sprung / compensated frames.

 

Before anyone asks, NO you can not take them off my hands.

 

OzzyO.

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Hello all,

 

a bit more of an update, more work on the front end of the frames. The cylinder formers and valve rods in place, along with the front frame spacers,

post-8920-0-06890300-1405106059_thumb.jpg

 

In this photo you can see the small brass bushes that I've started to use for the inside piston rods (these ones are at the rear only) the front ones are still to be fitted,

post-8920-0-04708100-1405106145_thumb.jpg

 

The three front ends lined up. Starting from the front, the first full filler in place, starting to cut out the parts that I don't want, all the bit roughed out,

post-8920-0-67671100-1405106163_thumb.jpg

 

Well on the way with the cleaning up,

post-8920-0-50715700-1405106186_thumb.jpg

 

The full width frames are starting to look something like, apart from the inset is a bit on the shallow side,

post-8920-0-04925700-1405106204_thumb.jpg

 

Starting to get the curve on the outside of the frames,

post-8920-0-08698300-1405106222_thumb.jpg

 

The inside of the inset on the full-width frames in place, I've just got to get the curve in place,

post-8920-0-00197700-1405106236_thumb.jpg

 

The inside curve sorted out and the front piston rod bearings in place,

post-8920-0-36220700-1405106254_thumb.jpg

 

The front end of the narrow end frames. Before anyone says that the inset frames should not have an inset I know that, but it does help to keep the wheels off the frames.

post-8920-0-68275000-1405106122_thumb.jpg

 

The start of the inside cross heads all six of them!

post-8920-0-66873800-1405106274_thumb.jpg

 

OzzyO.

 

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Hello all,

 

work progresses on the Castles, following on from my last post, from the right the front of the C/H, the rear with the locating tabs filed off and the front again but this time with a small rebate for the piston rod to fit into. This is filed out using a small (2mmDia.) diamond file that I have,

post-8920-0-58976400-1405763889_thumb.jpg

 

All six cross-heads filed up for the piston rod,

post-8920-0-38841900-1405763911_thumb.jpg

 

and with the front face in place, these are fitted using my R.S.U. and 180 deg. solder,

post-8920-0-97377200-1405763925_thumb.jpg

 

The overlays for the C/Hs. I'm looking at fitting them to both sides (not that you see much of them, inside of the frames),

post-8920-0-37366500-1405763939_thumb.jpg

 

Most of the parts for the inside pistons, the top row of C/Hs are showing the outside faces, note the two types,

post-8920-0-79538300-1405763979_thumb.jpg

 

The piston rods with the operating rod cross drilled and soldered in place,

post-8920-0-67522100-1405764415_thumb.jpg

 

For cleaning up small parts I use one of these (a tea infuser, about £1.50 from Tesco etc.),

post-8920-0-05181500-1405763964_thumb.jpg

 

The three front ends with the top inside part of the cylinders removed before cleaning up,

post-8920-0-08563600-1405764014_thumb.jpg

 

I thought that it was getting a bit warm in the workshop last Sunday so I took this photo,

post-8920-0-02113100-1405764058_thumb.jpg

 

Starting work on the rocking levers for the inside piston rods. I have now started to drill a hole for the valve rocking lever in them 2mm from the end of one of the slots (1.3mm dia.),

post-8920-0-40943900-1405764072_thumb.jpg 

 

After this a 10BA washer is soldered over the pivot hole (this will be counter sunk later) then form some lengths of brass wire (0.4 Dia.) in to U shapes to go around the open ends of the rockers,

post-8920-0-63707300-1405764098_thumb.jpg

post-8920-0-53020900-1405764127_thumb.jpg

 

The main frames with the front ends in place, I tend to do this at an early stage just to make sure that the full lengths of the frames are all true. If required small lengths of shim brass will be soldered to the top or bottom of the rear of the cylinders to "bend" the joint,

post-8920-0-24681000-1405764200_thumb.jpg

post-8920-0-15191900-1405764215_thumb.jpg

 

On the two locos that have joggled frames I decided to try out the Hobby-horse castings for the valves and rocker arms, after a quick grit blast on the left,

post-8920-0-28197800-1405764254_thumb.jpg

post-8920-0-10167600-1405764281_thumb.jpg

 

The only part that I really wanted the rocker pivot, in place,

post-8920-0-24114100-1405764300_thumb.jpg

 

The parts that are in the kit, these look OK and work well. But I'll let you decide!

post-8920-0-31494400-1405764327_thumb.jpg 

 

This is the part of building three loco that I'm not looking forward to doing all eighteen horn-blocks, guides, Etc. The main parts for one loco as supplied, one of the first jobs is to remove all of the casting sprues (and keep all of them),

post-8920-0-46195100-1405764238_thumb.jpg

 

The first job that I tend to do with horn-guides is to clean up the out side and inside sliding faces, to do this I tend to use a 200 grit diamond slip, after the fist side is cleaned up (the inside) I give the outside a rub over and then measure the sizes. What I aim for is 4.45mm this gives a nice fit for the horn blocks to slide on (a bit of slack on this face is not a bad thing as it allows the block a bit of "twist" across the frames.

After this I tend to clean up the matting faces of the horn-guides. The face across the top I tend to file a few thou below the two side faces, I don't know if it helps to get a better fit but I think it does,

post-8920-0-69385400-1405764342_thumb.jpg

 

The next job was to clean up the horn keep mating face, I've kept the small strap on the bottom for now. After this I'll drill out the setting holes to 1.5mm or I may try 1/16"  using a centre drill. I do this as the holes are cast at the tapping size for10BA but all of my springs are for 12BA screws, to sort this out I plug the holes with short lengths of 1.5mm brass tube and then tap them12BA, it's a bit of a pain but it works for me,

post-8920-0-91347800-1405764373_thumb.jpg

 

The horn-blocks as cut off the sprue, the first job will be to clean up the axle faces and get them to the same sizes this will be done on the diamond lapping plate then all of the sprue will be milled off. After that I may ream out the bearings to 4.8mm or I may mill the slots out to 4.5mm.

But before any of that I'll measurer all of them across the flats in the gaps to see how much they vary and see what size the gaps are in the horn-guides. This is where having a set of slip gauges would come in handy, but can I really justify £80 for a set of 32 of them (that looks to be a very good price), 

post-8920-0-84808600-1405764394_thumb.jpg

 

So yes doing eighteen of one part is a bit of a pain but once you work out how your going to do it and stick to it, it can work out quite quick to do. Batch building the frames will be quicker than building three sets of frames one after the other.

 

OzzyO.

   

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Hi OzzyO where do you buy your 200 grit diamond slip from?

 

Len

 

Hello all, Len,

 

it's not a single sided diamond slip, but a four sided one having the following grits on it starting at the course one first 200, 300, 400 & 600 grits. I bought it from Aldi a while back for about £10.00.

With a bit of luck these two photos should help,

post-8920-0-40329600-1405792198_thumb.jpg

 

This is the info. on the end of the block,

post-8920-0-32840800-1405792217_thumb.jpg

 

HTH

 

OzzyO. 

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