Tag Archives: Bulleid

Five Shunter Challenge Pt7: The perils of flux

The dark art of soldering mystifies some, but I have managed to work my way through the mysterious technique by trial and error (with some reading). I remain impressed that in years passed I managed to build some brass locos with normal electrical solder. I now know that it is far easier to use a low-heat type of solder.

One lesson I am still learning is the best type of flux to use. Flux is a medium that helps concentrate heat on the joints that you wish to solder. Historically I have used solder paste, but I have discovered that although very helpful, it is virtually impossible to remove all traces of the waxy substance, which can lead to corrosion and the failure of solder joints. My primary issue with the stuff has been its ability to totally destroy paint work over time. Usually long after you have finished the kit.

Due to these problems I switched to a liquid solder a while ago, which is much easier to clean off brass. But as discovered in my previous ‘challenge’ blog, another problem arises: Corrosion. I have used Carr’s ‘Green Flux’ for a while, but this stuff really shouldn’t be left on anything for longer than a few hours. Annoyingly this includes my chassis jig, which the green flux started to eat at soon after I purchased it.

A cleaning regime is essential to eliminate any flux residue. Despite my aggressive cleaning regimes (boiling water, scouring powder, ultra sonic cleaning), some flux residue still manages to persist. I conducted some further research to see if there was a less aggressive flux that I could use. I purchased some different types of flux and I am currently using the O Gauge societies ‘Safety Flux’, which has so far, not caused me any further problems.

I have also started cleaning up work pieces (using the cleaning regime above) after every building session. Even if I plan to continue building in the morning.

Another trick I have used to stop the steel wheels and axles rusting is to store them in a plastic bag with some lubrication oil.

x5 Shunter Challenge Progress

BR Class 02 Diesel ShunterDJH

Chassis block folded. Compensation fitted. Axles Fitted. No Rust

Sentinel post war 100HP 0-4-0VBT – RT Models

Chassis block folded. Compensation fitted. Axles Fitted. Gear Box Fitted. Rust Issues. Super cleaning to make sure it doesn’t happen again.

Ruston & Hornsby 88DSJudith Edge

Chassis block folded. Compensation fitted. Axles Fitted. Gear box only partly completed.

11001Judith Edge

Chassis block folded. Compensation fitted. Axles Fitted. Rust Issues. Super cleaning to make sure it doesn’t happen again.

English Electric/Hawthorn Leslie 0-6-0DEJudith Edge

No progress

P.S. If there are any aspects of x5 shunter challenge that you want me to cover (be it soldering, equipment… anything at all) please do leave a comment or contact me by email. I will reply. You can also follow me on twitter for instant updates.

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Five Shunter Challenge Pt6: Oh no! It’s Rust!

Tragedy strikes! I returned to my kit builds today to find that three of the shunter chassis’ have acquired an unhealthy gathering of rust on the wheels and axles. Alan Gibson wheels are steel and they don’t seem to have taken kindly to the flux that I have been using to solder up the chassis. This has also affected the axles inside the gearbox I built last time.

After some swearing and general moodiness, I started to investigate how best to remove the rusty residue. I was surprised to find that soaking the model in Coca Cola was a possible remedy. This is apparently due to the acidic content of Coke (there are some quite amazing you tube videos that you can watch).

I set up a Coke bath and dropped the problem parts in and to my surprise, after 2 hours soaking in coke, most of the rust had vanished, and any remaining residue could be removed with a tooth brush.

2014-11-03 19.56.52LR

Now to find out how to stop this from happening in the future…

x5 Shunter Challenge Progress

BR Class 02 Diesel ShunterDJH

Chassis block folded. Compensation fitted. Axles Fitted. No Rust

Sentinel post war 100HP 0-4-0VBT – RT Models

Chassis block folded. Compensation fitted. Axles Fitted. Gear Box Fitted. Rust has messed up the free running.

Ruston & Hornsby 88DSJudith Edge

Chassis block folded. Compensation fitted. Axles Fitted. Gear box only partly completed.

11001Judith Edge

Chassis block folded. Compensation fitted. Axles Fitted. Rust has messed up the axles.

English Electric/Hawthorn Leslie 0-6-0DEJudith Edge

No progress

P.S. If there are any aspects of x5 shunter challenge that you want me to cover (be it soldering, equipment… anything at all) please do leave a comment or contact me by email. I will reply. You can also follow me on twitter for instant updates.

Five Shunter Challenge Pt5: Gearboxes

Today we look at the gearboxes that will be fit to the five shunter kits.

My previous models have used Branchlines gear boxes, but I was really keen to try some of the gearboxes produced by High Level Kits for the x5 shunter challenge. In fact, one of the main reasons I purchased the Sentinel and 88DS kits was because the High Level Kits gear boxes were included in both kits. This would allow me to use these gear boxes test with the remaining three locos (as they require gear boxes to be purchased separately).

The instructions for the High Level Kit gear boxes are clear and well illustrated. It is important to work through the instructions and consider the placement of the various reduction gears. Don’t rush this.

I quickly put together the little 0-4-0 gear box provided with the RT Models Sentinel kit, ensuring the folding of the nickel silver pieces were at 90 degree angles using a hold n’ fold tool.

I test fitted the gear box to the compensated chassis and gave it a running in. Everything is running well. On to the next one…

2014-10-12 20.36.44-1LR

2014-10-18 20.01.26-1LR

x5 Shunter Challenge Progress

BR Class 02 Diesel ShunterDJH

Chassis block folded. Compensation fitted. Axles Fitted.

Sentinel post war 100HP 0-4-0VBT – RT Models

Chassis block folded. Compensation fitted. Axles Fitted. Gear Box Fitted.

Ruston & Hornsby 88DSJudith Edge

Chassis block folded. Compensation fitted. Axles Fitted.

11001Judith Edge

Chassis block folded. Compensation fitted. Axles Fitted.

English Electric/Hawthorn Leslie 0-6-0DEJudith Edge

No progress

P.S. If there are any aspects of x5 shunter challenge that you want me to cover (be it soldering, equipment… anything at all) please do leave a comment or contact me by email. I will reply. You can also follow me on twitter for instant updates.

Five Shunter Challenge Pt4: Fitting and removing wheels

Today is a brief look at how I fit wheels to axles.

The five kits being built in the x5 shunter challenge either have Alan Gibson wheels or Markits wheels. The BR 02 is the only model with Markits wheels which are very easy to fit using the special Markits screwdriver. The axles have a square shaft that only allows each wheel to be fitted in one of four positions.

Alan Gibson wheels are friction fit, meaning that wheels are pushed onto a typical rounded axle. The brute force required to push or pull wheels off axles can be a bit scary, especially when you are fitting them onto your lovingly constructed chassis with brake rigging etc. For this reason I purchased some wheel fitting jigs. I bought a selection of cog and wheel ‘pullers’ and ‘pushers’ from fohrmann-WERKZEUGE. These tools have been very useful and limit the chance of damage to any of the models.

x5 Shunter Challenge Progress

BR Class 02 Diesel ShunterDJH

Chassis block folded. Compensation fitted. Axles Fitted.

Sentinel post war 100HP 0-4-0VBT – RT Models

Chassis block folded. Compensation fitted. Axles Fitted.

Ruston & Hornsby 88DSJudith Edge

Chassis block folded. Compensation fitted. Axles Fitted.

11001Judith Edge

Chassis block folded. Compensation fitted. Axles Fitted.

English Electric/Hawthorn Leslie 0-6-0DEJudith Edge

No progress

P.S. If there are any aspects of x5 shunter challenge that you want me to cover (be it soldering, equipment… anything at all) please do leave a comment or contact me by email. I will reply. You can also follow me on twitter for instant updates.

Five Shunter Challenge Pt3.4: Comprehending Compensation

This time we continue the discussion about my plans to build these five kits with compensation. As with all things in life, there are a number of different ways to fit a compensation system and the five shunters being built require quite different approaches. Today we will look at the horn block compensation system.

What are Horn Blocks?

This DJH kit of the BR Class 02 Shunter is built as a rigid chassis, but after attempting to build the chassis a few years ago, I decided that I would prefer to include compensation. The rigid chassis is constructed on horn blocks (bearings that look like brass cubes), so I decided to purchase a separate horn block compensation kit.

The driving axle shouldn’t be compensated on a 0-4-0, so I started to prepare the non-driving axle for compensation. The compensation kit instructions include helpful illustrations, but I was a bit scared to discover that I would need to cut a wider hole in the chassis for the compensated horn blocks to fit into.

I built up the outer horn block plates and used these to marked out the chassis with a permanent marker.

2014-11-09 09.47.32LR

 

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I then cut out the square gap using a fine hack saw with a thread-like blade.

The advantage of this horn block system is that you can manually adjust the height of the driving axle and the amount of compensation either side using screws. This means that even if my cutouts are not identical I can urh… compensate.. for that with the screws. I must admit that I am really pleased with the result and the chassis runs really well.

2014-11-10 21.45.24LR

2014-11-10 21.45.05LR

x5 Shunter Challenge Progress

2014-11-11 20.41.42LR

BR Class 02 Diesel ShunterDJH

Chassis block constructed, compensation fitted.

Sentinel post war 100HP 0-4-0VBT – RT Models

Chassis block constructed, compensation fitted.

Ruston & Hornsby 88DSJudith Edge

Chassis block constructed, compensation fitted.

11001Judith Edge

Chassis block constructed., compensation fitted.

English Electric/Hawthorn Leslie 0-6-0DEJudith Edge

No progress

P.S. If there are any aspects of x5 shunter challenge that you want me to cover (be it soldering, equipment… anything at all) please do leave a comment or contact me by email. I will reply. You can also follow me on twitter for instant updates.

Five Shunter Challenge Pt3.3: Comprehending Compensation

This time we continue the discussion about my plans to build these five kits with compensation. As with all things in life, there are a number of different ways to fit a compensation system and the five shunters being built require quite different approaches. Today we will look at the compensation system for the three Judith Edge kits.

Judith Edge kits can be built rigid or they can take two different types of compensation. They include etch lines for horn blocks (see the DJH BR 02 in the next blog entry) and they include their own ‘balance beam’ compensation system.

How do I build the balance beams?
I must admit that it has been the balance beam compensation that deterred me from building my Judith Edge kits for so long, as I just couldn’t comprehend how to put the beams together. I didn’t find the instructions that helpful in this regard (I’m a ‘copy the picture’, kind of guy). I couldn’t understand where to solder the axle bearings or how to create a pivot for the beams.

While researching some other peoples Judith Edge builds on RMweb and looking again at the very helpful emails that Judith Edge sent me when I first purchased 11001 (that I still didn’t really understand), it suddenly happened… Eureka!!! Everything written in the instructions and emails made sense. What I was failing to understand was the axle bearings are actually soldered on the insides of the balance beams (See the picture below).

You can see the balance beams on the inside of the chassis with the axle bearing soldered onto them.

You can see the balance beams on the inside of the chassis with the axle bearing soldered onto them.

You then use some spare metal rod or a track pin to create a pivot for each of the beams (the Peco track pins are quite useful in this regard).

Peco track pin acting as a pivot

Peco track pin acting as a pivot

A good tip is to put some paper between the balance beam and the side frames while soldering the pivot pin in place (to stop them soldering together).

 

This realisation of how to complete the balance beams was a fantastic moment for me, as it now means I can build any of the Judith Edge kits.

x5 Shunter Challenge Progress

2014-10-09 22.09.22LR

BR Class 02 Diesel ShunterDJH

Chassis block constructed.

Sentinel post war 100HP 0-4-0VBT – RT Models

Chassis block constructed, compensation fitted.

Ruston & Hornsby 88DSJudith Edge

Chassis block constructed, compensation fitted.

11001Judith Edge

Chassis block constructed. compensation fitted.

English Electric/Hawthorn Leslie 0-6-0DEJudith Edge

No progress

P.S. If there are any aspects of x5 shunter challenge that you want me to cover (be it soldering, equipment… anything at all) please do leave a comment or contact me by email. I will reply. You can also follow me on twitter for instant updates.

Five Shunter Challenge Pt3.2: Comprehending Compensation

Last time I discussed the difference between compensated and rigid chassis’ and my plans to build these five kits with compensation. As with all things in life, there are a number of different ways to fit a compensation system and the five shunters being built require quite different approaches. Today we will look at the compensation system fitted to the RT Models Sentinel.

The RT Models kit and instruction sheet are intuitive and explain the compensation system very well. The side frames include an elongated hole for the non-driving axle bearings to pop into, which allows the non-driving axle to rock up and down.

2014-10-08 17.58.37LR

A pivot for the non-driving axle is created using a v-shaped etch that makes light contact with the centre of the axle. The pivot allows the non-driving axle to deal with cambers and uneven track.

2014-10-08 17.57.42PSLR

 

2014-10-08 17.58.07LR

 

x5 Shunter Challenge Progress

BR Class 02 Diesel ShunterDJH

Chassis block constructed.

Sentinel post war 100HP 0-4-0VBT – RT Models

Chassis block constructed, compensation fitted.

Ruston & Hornsby 88DSJudith Edge

Chassis block constructed.

11001Judith Edge

Chassis block constructed.

English Electric/Hawthorn Leslie 0-6-0DEJudith Edge

No progress

P.S. If there are any aspects of x5 shunter challenge that you want me to cover (be it soldering, equipment… anything at all) please do leave a comment or contact me by email. I will reply. You can also follow me on twitter for instant updates.