[CFF] News from the Resita-shop

Posted by Gerd on Tuesday, 12 December 2017 with No Comments

Hello,

the Resita loco is rolling!! But still not from own power. Last weekend I assembled the drivers and installed them in the frame. I had to wait for replacement axles, since the delivered ones were too short. Thanks to the great support of Mr. Reppingen at this point.

The chassis of the Resita features four axles, which allows side-move for several millimeters. The main shaft from 4mm stainless steel is installed in the outside frame as usual, but the wheels are riding on bronze tubes, which can slide over the steel axle. A screw in the steel axle transmits the power to the tube.

With this setup, the loco can run on 2′ radius tracks. But it looks odd with the huge engine on such a tiny curve. Which leads me directly into some thinking about minimum-radius :

The prototype uses Klien-Lindner-axles on the first and fourth wheelset and is able to run on 30m radius curves. Calculating the prototype minimum radius down to 15mm scale, the tightest curve for my model should be 5′ radius (!). Nearly all garden layouts in my area are built with LGB-R3 which has a 4′ radius, which will be used on my future railroad as well.

On the wider curves, the full side-movement of all wheelsets isn’t necessary, so I locked the center drivers with some washers. As on the prototype, only the end wheelsets are moving. this setup works even fine on 3′ radius, which is the smallest one I can run my Shays on.

Next I assembled the cylinders and mounted them temporary to the frame. The last photo shows the reshaped rear cylinder covers.

Since the drivers were already in place, I adjusted the cranks and installed the coupling rods. The loco is rolling very smooth and I look forward to get the valve gear attached soon as well for some test-runs on compressed air.

Last job this weekend were the cylinder top plates from brass sheet and the steam-feed-pipes bend from 8mm round-brass.

Let’s see if the loco is running next week πŸ˜‰

Gerd

[CFF] Reshaping the cylinder covers

Posted by Gerd on Tuesday, 5 December 2017 with No Comments

Welcome back to another report on my Resita-build.

I spend some work on the cylinder covers. Comparing the stock cylinders with the prototype photo shows some differences I like to negotiate.

First I added another 6 screw-heads to each of the large covers. I set a second set of holes, tapped them for M2-screws. The screws got cut off on the back and filed flush with the cover.

The smaller covers above for the piston-valves were made from cnc-milled parts. The original piece is screwed into a hole of the steam-chest. I made a threaded-plug two close the hole with a smaller threaded-bore inside. Now I can screw the new covers into place with the center-bolt.

Now to the top cover of the steam chest. I made new ones from a piece of brass to make them 4mm higher than before. The new covers are “hand-cranked” on my regular mill, which was actual faster than cnc-milling.

I used a single block of brass, milled the first cover, turned the piece over and milled the second cover. I sawed the block in half and milled each cover to final shape. Now the cylinder is much closer to the prototype look.

Next I’ll finish the rear covers as well and start to assemble the cylinders.

Gerd

[CFF] The suspension details and couplers arrived!

Posted by Gerd on Tuesday, 28 November 2017 with No Comments

Good morning,

I finally got my latest delivery from Shapeways, including the suspension detail and couplers for my Resita. I designed them on the PC as 3D-model and got them 3D-printed in brass. Actually, they don’t print directly in brass, they print a wax-model, which is than cast in brass as usual.

The photos above show the kit-version with my own design. The detail of the cast pieces is amazing. Due to some mis-calculation, the tension rods are a bit to long, so I’ve to shorten them during installation. On the back of the pieces are short 1.5mm shafts, which will fit into holes in the frame for alignment. The pieces are finally soldered to the frame.

The couplers are also cast in brass. They are of my own design, matching my planed couplers for the cars and wagons. They are combined link&pin-couplers with a loop for LGB-couplers as well. They are screwed to the frame.

Next week, I should have the frame complete for painting πŸ˜‰

[WBE] German/French forestry railroad meet – The uneven twins

Posted by Gerd on Sunday, 26 November 2017 with 2 Comments

Hello again from the smaller Hon30 railroad,

in spring this year, I showed some layouts from other model railroaders, which were based on my design of the WBE. Bernd Iron copied my entire layout with some additional segments, and gave it a totally different look. Yesterday, he came for a visit and brought some of his modules, so we placed both side to side as “uneven twins” as they are.

Bernd’s forestry railroad “Groß Rommelstein” is located in the French Alsace/Lorraine region, so we had a first German/French forestry railroad meet on our kitchen table.

Bernd’s visit was not only for fun, we also have plans to exhibit our layouts together as huge, German/French forestry railroad during the “Faszination Modellbahn in Sinsheim” in march 2018. Therefore we tested some layout arrangements as well as discussed the scenery of the needed interlocking-segment.

We also found some time to run trains on my layout. Bernd brought his new red Decauville and I recently got my green Schneider loco from Minitrains this week.

A special was the tiny grey car, which is modelled after a prototype at the Abeschwiller railroad in France/Alsace. Bernd made two of this cars from evergreen styrene and this one was a gift to me and my WBE. Many thanks Bernd, and we really had a great day.

Gerd

[CFF] Details for the journal guides

Posted by Gerd on Tuesday, 21 November 2017 with No Comments

Hello,

today, I’ve only a small update. I did some modification to the journal guides. The kit-version is flat and not so close to the prototype. So I took some 3mm brass and milled a 1.5mm deep slot into it. Another piece of brass got silver-soldered on top to form a “pipe”.

I sliced the pipe down into pieces, which will slide over the lower portion of the original pieces which got milled down as well. I added some screwhead-details and soldered all parts together.

And since my new sand-blasting-cabin arrived as well, I did some tests and painting. This is, why the guides are already painted red.

Now I await my latest order from Shapeways, which will include the suspension detail and couplers for my Resita. Once they are installed, the frame is nearly ready for painting.

Oh, and I extended the cab floor to suit the longer frame.

Gerd

[CFF] A new back for the Resita

Posted by Gerd on Tuesday, 14 November 2017 with No Comments

I already showed the pieces last week, and here they are in place.

As the front pilot, the rear is also very basic on the model. Compared with the prototype, there’s a lot of potential for a model builder like me. I designed a new end beam and cnc-milled it out of 2mm brass. I also added another 6mm to the length of the frame, to get the correct length.

As on the front, the rivets are made from nails. The new toolboxes at the side are made from 20x20mm square pipe and I silver-soldered a back to them. The endbeam and toolboxes are soft-soldered together with a small piece for the frame extension.

Once the sides of the old endbeam were cut off, I filed all edges flush and slipped the new endsection over the frame. I drilled two holes on each side through the back of the toolboxes into the sides of the frame, to hold the extension in place with screws.

Now to the brake equipment. I added the levers of the hand brake to the firemans-side and the steam brake on the engineers-side.

Now I wait for the ordered suspension-rigging and couplers to complete the frame.

Will be continued soon πŸ˜‰

[CFF] Rebuild the front pilot

Posted by Gerd on Tuesday, 7 November 2017 with No Comments

Hello,

another week at the Resita-workshop has passed and I made progress on the front pilot.

I filed the edges and “rivets” flush with the frame. From prototype photos, I made a proportional drawing of the front cut-outs and rivet location, which I printed on self-adhesive labels.

Once the drawing was sticked onto the brass frame, I drilled the rivet holes and also a bunch of holes where the cut-outs are. The cut-outs are then filed to final shape. To make the rivets, I used 1.1mm brass nails I had in my shop. They are hammered into the 1mm holes and have tight fit. There’s no additional adhesive necessary. I cut them off on the back and filed them flush with the frame.

Next project is the front boiler support. The original piece in the kit is well made, but was to wide when compared with the prototype. So I created a new one in CAD and cut the parts out of 1.5mm brass sheet on the cnc-mill.

Once they are soldered together, I filed the edges flush and made a test-fit on the frame.

I also decided to move the front frame cover from on-top, into the frame to be flush with top edge of the sides. This brings the whole pilot closer to the prototype-proportions. The boiler-support is just set in place and will be held down by the boiler.

As you can see on the last photos, I also milled parts for the rear end, But that’s a project for the next days.

Gerd

[WBE] The new Decauville “Progres” loco from Minitrains is released !!!

Posted by Gerd on Saturday, 4 November 2017 with 1 Comment

Hi folks,

the new Decauville Progres loco from Minitrains (Announced in 2017) is now available. I picked mine up from Minitrains on the Model Train Show at Friedrichshafen yesterday. The loco is very well detailed and looks tiny, but matches well into the world of Minitrains. This loco sill start my new set of french logging locos, which will be extended by the Schneider Locotracteur, which will be available soon as well (announced in 2016).

The loco will get some weathering and details within the next weeks as well as a crew.

Regards, Gerd

[CFF] First work on the frame

Posted by Gerd on Tuesday, 31 October 2017 with No Comments

Hi,

once the long list of projects was done, I started work on the frame. First I un-soldered the tool boxes at the rear end beam and the center support for the water tanks. The valve gear on the real Resita shows a lifting arm behind the expansion link while on the model version, the arm is on the same shaft as the link, facing towards the cylinders. This is one of the details I like to change so I drilled new holes for a shaft, which will take the relocated lifting arms. I also drilled holes for the dummy-brake rigging below the cab floor.

Next I moved the frame to the mill. The lower edge of the frame shows a recess behind the last drivers, so I milled 3mm off the frame. I used a 6mm ball-mill to start with the round sections and milled the remaining areas with an endmill.

The top edge of the frame is also a bit to high, so I milled off another 3mm at the marked sections. The areas around the shaft bearings and cross supports stayed in place.

Once the milling was done, I soldered the water-tank support back in its new location behind the new lifting arm shaft.

Next I’ll build the components of the brake system and I’ll spend some attention to the rear buffer beam of the frame.

[CFF] The “Resita”-kit arrived

Posted by Gerd on Tuesday, 24 October 2017 with 3 Comments

Hello,

last weekend, I picked up the first two kits for my new Resita-loco at Dampfmodellbau Reppingen. It was a very exciting and interesting visit. I was able to get the components for the chassis and boiler. The cab and water tanks as well as bunch of details will be shipped later. I was very impressed by the workshop. It would be really great to have such a workshop on its own.

Back at home, I checked all the parts to get a feeling of the loco and the kit. While doing so, I also noted some changes and improvements, which I like to add to my loco, to make her one-of-a-kind.

Basically I’ll keep the Reppingen-loco technically, while I’ll spend some work on cosmetic details such position of the domes, the front boiler support, details on the frame and many others.

Most of them are small bits, but may result in a very nice and close-to-prototype-model. As usual, I’ll post the progress here on my blog.

Stay tuned, Gerd