Wednesday, July 25, 2018

NSW 48 Class Sounds and Drive Flows

G'day,

Please find below two videos of my 48 Class Project.

The first video demonstrates the custom template (I should really be saying bespoke right? That's a popular word right now with the hipsters?) which includes two types of drive flows, vigilance, driveable dynamic brakes and scrolling marker lights. The scrolling marker light template is based on the presentation I did at MRNSW.



The second video is the 48 project on a ESU V4L decoder which I hope to fit to my 7mm 48 when it arrives. The speakers being used are Tang Band T1, passive radiator type speaker and a Zimo sugarcube. It's a little hard to really demonstrate this sound through re-recording and then via YouTube. The TB1 really enhances the bass and is a much better reproduction of my original recordings.




I was having a little trouble with the Wabco horn the first video and didn't want  to re-record the whole thing again.

The videos are not the best. I just don't seem to be able to get the audio right of all things haha.

Thanks for looking,

Linton

Monday, July 16, 2018

It's been a while!

Hi There,

Its been a while since even looking at this blog, even longer since updating! Nothing much has changed though. I am still just plodding along building the occasional sound project, have started a David Peterson 12 Class kit and am dabbling in anything that takes my interest really.

I actually kind of miss the old blog. Facebook modelling/prototype pages make me more frustrated than inspired so I have distanced my self from it all, bar two groups.

I am not sure what is going on with the hobby? It seems like a massively glutenous type affair these days, where people want it at any cost - this also includes paying for others skills. I am sure this has been the case forever, however I don't remember meeting so many people that can't be bothered learning some of the basic skills that make the hobby fun. Yes, everyone takes something different from the hobby, whether its brilliant layout building or simply collecting models. What I find most frustrating is that there doesn't seem to be too much individualism these days, both in ideas and execution. Anyway, that's enough of that rubbish - time to get of the soap box.

Over the last year I have been trying to landscape our new house, study for and jump through a million hurdles to become a military pilot (still in progress) and have now scored a new job with the NSW Air Ambulance. Leaving POLAIR will be sad as it was one of my career goals to get there. On to new things they say!

Fish River:

I have made a very small dent in building track for Fish River. There are only five points and three catch points to build, but in my typical meandering style, it will probably take 20 years to finish!


The track plan and NSWGR point templates are drawn to HO-SF using a program called Templot. I really do like Templot as you can design everything very accurately and prototypically. 

A Place to Work:

You may have also noticed my new modelling desk. This also took me forever to build up in the shed but now that it's installed in the house, I love it. Due to work place mess restrictions being placed on me by the household boss (a condition of having the study), I built a removeable timber section that hides a test track. 


7mm Bug:

I have been tempted by 7mm modelling for a while now, probably sparked by seeing David Petersons models at an Early Days seminar years ago. For me, 7mm offers a couple of clear advantages. One is the ability to use higher performing speakers such as Tang Band T1 units due to having more space. These speakers sound very good, a huge improvement over any other speaker I have heard. The second thing I like about 7mm is that it's more an engineering scale. Thirdly, S7 wheels and other parts are available from the UK. This really appeals to me as I grew up on the English MRJ. The scale has so much potential for scale modelling and for someone starting from scratch in the scale, this is a major goal and attraction.

While just dabbling in S7 at this point, my intentions are to use this standard. I am not on here professing to be an S7 modeller however I will give it a shot. If I can't achieve this standard, I probably wont pursue the scale too much further.

I started an S truck kit and used Bill Bedford etched sprung W Irons. These have worked very nicely with slaters S7 wheels. I have not progressed this kit any further at this stage as I need to scratch build the underframe. Many of the parts supplied in the kit are way too coarse. The supplied C channel sections are way to coarse with the flange scaling out at 40+ mm. I figure if I am going to all the trouble to put close to scale wheels on the model, I can't skimp on other parts of the kit. New underframe it is!



Now onto the 12 Class kit - this thing is magnificent. I have only semi completed the chassis so far but have loved every step. The kit is extremely well thought out and the nickel silver is very nice to work with. I have some wheels on the way and have decided to try and fit working valve gear. I contacted Martin Finney kits in the UK and the suggested I try their Adams loco working valve gear kit. The valve gear kit turned up in the mail a week ago and I am now busy building a couple of new frame spacers so as to accommodate the valve rods. The Adams valve gear is very close to that of the 12 Class. I quick trip to the Power House museum was useful for detailed photographs. I think Danielle avoided me the whole time out of embarrassment as I was 'that weird guy' crawling around underneath 1243, trying my hardest to get good enough detail shots.



S7, C36 Class Wheel on Left

I have made a few little mods so far, like turning up a new air reservoir and valve gear but I am following the instructions to a tee. The bending of the cylinder covers was done 100% to David's instruction and they came out exact. I love the kit but am a little nervous about the smokebox, firebox and footplate bending. One step at a time I guess.

Well that's about it for now. I am going to do a few videos to explain my latest diesel sound template so will add to the blog soon.

Thanks,

Linton


Sunday, June 4, 2017

6029 Finished

Hi,

Once again, it has been a while since updating my blog. These days I find Facebook a little easier to keep updated as Facebooks photo and video sharing features are much easier to use.

Since my last installment, I have finished the Garratt, including the sound file, presented at MRNSW and hurt myself.

Garratt

I have shared some of the photos and information contained in this update in previous posts. I thought I would consolidate 6029s build in this one blog entry.

The Garratt, particularly the sound file has exceeded all my expectations. While the audio side of things isn't bad, it is the way in which I have developed the operation of the sound file that I am most happy with. The file incudes a slipping feature, where if the driver is too heavy on the throttle the front engine unit will slip. To arrest the slip the throttle needs to be shut, then re-opened slowly. The slipping feature can also be enabled/disabled by function button, just in case it gets tiring.

The Garratt project, like all my other steam projects has throttle controlled chuff intensity/duration and coasting features.

I had spent quite a few hours recording 6029 at various locations. As with nearly all my files I am never quite 100% happy with how they sound. I think its a speaker thing, something that will most likely not change much for the smaller scales.

My 6029 is a Mansfield model. I bought it from a friend and immediately stripped the paint. A few little things needed fixing and while disassembling the chassis I noticed there was room and provisions for plunger pickups. The Mansfield model as delivered was fitted with wiper pick-ups for the non chassis power side. While wiper pickups aren't bad, my model was missing a few and on other models fitted with similar set ups I noticed they were sometimes misaligned.

I wondered, why would Mansfield Models have had the holes in the chassis sides for plunger pickups and not used them? I checked the alignment of the holes to the back of the insulated driving wheel rim and they were spot on. Not only were the holes in the chassis but the insulated bushes were fitted also. I checked my unpainted Garratt and what do you know, the bushes are fitted to it also!

I went about making four pickups for fitting into the bushes on both engine units. After painting it was all assembled and seemed to work.

Original Wiper Pickup - Inboard

Plunger Pickup Construction

Completed Plunger

Plunger Pickup Fitted to Inboard Position

Plunger Pickup Outboard (front)


On to the sound install. The model is fitted with two Loksound V4s, two Zimo sugarcube speakers and two ESU powerpacks. The Decoders, power packs and speakers are fitted into the boiler section with 4 pin TCS connectors joining engine units to boiler. I wanted the 4 pin connectors secured to the engine units so as to make connecting/disconnecting easier. I made up the looms and then a soldered a brass keeper onto the inboard bogie retaining nut.




The decoders and speakers were fitted to machined Delrin mounts. These mounts were drilled, tapped and then secured into the boiler unit utilising existing holes. I hate DCC installations where everything is just thrown in the boiler or sticky taped down. It's just something that bugs me ha ha.





The two sound files that are loaded into each decoder are slightly different. One causes the wheels to spin with large throttle inputs while the other decoder locks the electric motor into the speed where the slip began. This literally took me months to achieve, mainly in making it easy to use. The hardest part by far was maintaining the appearance of both engine units travelling at the same speed once the throttle was shut. This was a real challenge.

Anyway, enough talking. Here are a few more photos and a couple of videos. Please excuse the videos, they were taken on my iPhone.





I Painted the Garratt with Mirotone Etch Primer



















MRNSW

On to something different, I recently presented at the MRNSW (Modelling the Railways of NSW) convention. It was my first time presenting at a modelling forum but I had a blast. My topic was on recording and building sound projects for locomotives. I had severely underestimated the amount of time a subject like that could consume. I only made it half way through my presentation during the first session. The sessions that followed were crowd driven, trying to discuss points of interest. In reality, I could have spoken all day on just the ESU LokProgrammer. I was kidding myself trying to squeeze the whole lot into hour long sessions ha ha. Lesson learned.

I have to thank the organisers of MRNSW as it really was a great day. Thanks!

Other Stuff

The main reason I am actually updating my blog today is that I have plenty of time on my hands. I hurt myself badly last weekend while riding a moto x track. I am very fortunate in that I can still walk. Many things ran through my head that afternoon while laying on the ground. I am a very lucky bloke in that I will recover and I have a wonderful wife who is looking after me while my mobility is limited.

Lucky for trains I guess as the hobby is keeping my mind ticking over. I am currently trying to sketch out a drive flow for the NSWGR CPH railmotor. I am trying to build something that closely replicates how the real thing operates. More to come on this soon hopefully.

That's about it for now.

Thanks for looking,

Linton



Monday, January 9, 2017

Half Baked Garratt

Hi,

I hope everybody's New Year started well.

I have not made as much progress with my Garratt as I would have liked. The front engine unit is painted and re-assembled, and it actually runs nicely. I was a little nervous as I had completely dismantled it. The plunger pickups seem to be working nicely.

The real reason for the lack in progress has come about due to sound file testing. The AD60 slipping sound file has really had me thinking. The slipping method was quite easy to achieve. In contrast the engine units re-syncing (speed wise) with each other as proven to be very difficult to get right. I am getting there and the project is fairly easy to control now.

I have included two short videos, taken on my phone. Quality is not so good, sorry!

The locomotive is made up of two Garratt models. The front engine unit is freshly painted, the unpainted boiler section is from my second model as I don't want to handle the freshly painted boiler unit. The rear engine unit is about to be stripped of its old paint.

The decoders and speakers are just sitting there for testing purposes. This will be installed in the boiler section, mounted on a machined Delrin mount.

The front engine unit will slip. This happens with a large increase in throttle position. The locomotive is running at approximately speed step 6-8. The throttle is rapidly increased up to around speed step 18. The locomotive slips and the throttle is closed to arrest the slip. After the throttle has been closed, it is slowly opened once again and the model accelerates.

There is still some work to go in regards to the project but thought some may find it interesting at this early stage. Before anybody tells me, I know the chuff timing is not right. This will be sorted once finished ha ha.



Thanks for looking,

Linton

Sunday, December 25, 2016

I am Slipping


G’day,

Well as the title suggests, I have been slipping when it comes to updating my blog. As Bob Stack mentioned in his Blog a few months ago, the Russians seem to have taken a keen interest in NSW modelling. I have had hundreds of blog hits coming from Russia! I have not received my new Russian mail order bride yet, as I am sure Australia Post have been quite busy between sorting Christmas deliveries and throwing everybody's Ixion 32 class models around!
Danielle and I are now feeling more at home in our new house so a little bit has been happening on the modelling front.
While on the subject of slipping, I purchased a Mansfield AD60 Garratt off a mate a few month ago. I have stripped the model of all its paint and have begun the long process of repainting and re-assembling everything. There are a bloody lot of parts to the Garratt, I hope I can get it back together!
Anyway while disassembling the chassis I noticed that there were four Delrin bushes fitted to the chassis rails. To me they looked like plunger pickup bushes. On closer inspection I discovered that they lined up perfectly with the driving wheel rims. The Mansfield Garratt was built from the factory with phosphor type wipers on the leading and trailing insulated driving wheels. While these tend to be ok, I prefer plunger type pickups due to their robustness. I find it interesting that the plunger bushes were fitted, without the actual plunger pick up from the factory? Lucky I guess, as drilling the holes in the chassis (like I did for my Trax Z13) is tricky work.
Original phosphor wiper seen on rear right hand driver
The factory plunger pickup holes in the chassis just to the left of the rear driver horn block guides

I turned up a few little brass bushes which locate the spring on the plunger. A trial fit to the chassis and they seem to work nicely. I am not sure why Mansfield ended up steering away from this type of pickup method. I hope I don’t find out once the model is all put back together.








The forward driver plunger pickup fitted

While my engineering brain was in gear, I wanted to come up with a neat way of attaching one side of the DCC connectors – the ones that will link the decoders to the engine units. I didn’t want the connector flapping about and I thought if the female side of the connector was fixed, it would be much easier to make the connections.
I ended up fabricating a little keeper which is soldered onto the inboard pony truck nut. The whole lot seems to screw together nicely and will keep the connectors out of sight, yet accessible.



AD60 Sound Project
The Garratt would not be complete without a new sound project. I have taken quite a few sound recordings of 6029 and have been filtering through and editing my little heart out.
Sometimes I have brain waves. Sometimes, well most of the time I don’t think about things enough. The Garratt however opened up a new opportunity in regards to DCC and realism. When it comes to realism, particularly for a Garratt, one thing that is so important is to have the exhaust of the two engine units falling in and out of synchronisation. While this effect can be done with only one ESU decoder, using two decoders (Yes it’s costing a fortune in decoders!) gives me the ability to induce a proper wheel slip in one engine unit.
It has taken me around three months to perfect the Loksound V4 slipping template however I now have a reliable and responsive project. I have designed the project so both decoders are using the same DCC address. As with all my projects, the throttle will once again control the sound flow – none of that ESU ‘Full Throttle’ function button pressing rubbish in my models thanks ha ha! When accelerating the Garratt, in the lower speed step region, if you open the throttle too much, one engine unit will slip. The wheels slip instantly and obviously the chuff rate rises to match. To arrest the slip the throttle must be closed slightly. Once the slip stops the engine units match their speeds and the locomotive will continue, as long as the throttle is not abused! This feature will allow the chuff synchronisation to be actually put out by a real slip. While typing this I have been testing it on the bench. It is not installed in the locomotive yet. It is looking promising however will most likely need tweaking once the locomotive is running. ESU V4 decoders are simply amazing when it comes to producing a realistic driving experience. If you can imagine it, there is most likely a way to build a template to achieve it.
Layout
Layout news, well there isn’t too much. The layout is still safely tucked away in Moss Vale. While I do have the room here, I will wait until the layout room is lined before I relocate it. I think I previously mentioned that I was changing my layout modelling location. I have been building bits and pieces for Picton now for many years. While a little sad to make a change, I have decided that I need to do something much simpler and concentrate on the quality. I have decided to build Fish River, I railway location on the Main South between Goulburn and Gunning. This location is quite interesting with it having two dead end refuges and a sand siding. The bridge over the river is fairly substantial and is located close enough to the station for me to model the whole location to scale. One of the biggest drivers for my change is model visibility and sound project staging. The mainline track at Fish River climbs steadily at both ends away from the station area with the refuges remaining level. This split and track elevation will stage models visually and aurally really well. I felt Picton was going to hide the models in the cutting a little too much.
I have drawn the entire track plan in Templot and have printed a full ten metre section and a four metre section out. The four metre section (pictured) will be used to build all the points on. The points have been drawn to NSWGR practise in OO-SF.
The sand siding ran very steeply into the river. I have plans for a sand loading platform however can find no information on whether the platform was actually built, what type of wagons were used and how the wagons were shunted. If anybody has any information I would love to hear from you.


Other

On sound news, once the Garratt is running, I will set up a Facebook site which will outline my projects and how they are controlled. I feel this will make managing peoples requests easier and give me the ability to monetise my work. Look out for Llewot Digital soon.

Well I hope everyone had a great Christmas, I had a good time at the Illawarra clubs Chrissy party. It was great to catch up with so many people.

This year Santa bought me a motorcycle rather than coal which was nice. The coal would have actually been quite handy as my 57 is still running around with no fuel.
Well that's it. Happy New Year and stay safe,
Linton