Just wish I had the courage to invest in one
Life is so easy when I run my trains.
https://gardenrails.org/forum/viewtopic ... 41&t=11364
food for thought though I was just extremely lucky to be taught how to use CAD at school and to have quite a bit of experience with printing objects through engineering classes.
It certainly looks like a DH, it should be impressive when finished. Have you decided on a paint scheme yet?Tropic Blunder wrote: ↑Thu Nov 28, 2019 1:21 amI cant remember if i posted photos of the DH being transported to the railways workshops for assembly but it has finally happened!
Towing Melbournesparks's Sentinel steam railcar. this project was started not all that long ago and has come along in massive strides.
I've been looking at building it's older relative, the EBR 10 class, but that will have to be built the old way, unlike you I can't get my head around CAD software......
Also interested to see the Sentinel railcar, as I've contemplated building one with a steam drive, possibly Leaping Lena from the NAR. Given the Tassie ancestry of the model is he going to be game enough to paint it in the original green flame livery?
I am a big fan of the 10's that'll be quite a weighty unit if you build it all metal, any idea on what motor blocks you'll use?
It's steam powered using a proprietary boiler and engine unit i believe usually used in model boats then using brass gears and home made carden shafts off EBay. its got an automatic gas regulator and an electric water pump to maintain water level in the boiler. its capable of going around R1 curves even though its almost scale length (i believe its a window shorter then the real thing?) its going to be in a variation of the WAGR scheme as its actually a mix of both but dont quote me on that.
That's an attractive colour scheme which I haven't seen before. Has DH37 been gauge converted yet, or is it still sitting in the yard on it's display track. Hmmm. You won't lose sight of a Cooks DH when it's running, it's a hi-viz scheme on a garden railway.
Walkers had some sort of technology agreement with North British and the 10 class seems to be based on the Indian YDM-1 class built by NBL in the mid '50s. So the 10 class is an old enough design to have replaced the VR G class in an alternative universe. One where the state govt. had an average IQ over 40........
My Accucraft Walker railmotor is all metal and weighs in at 5kg, so the single motor is working fairly hard to just lug itself around. I'd want to keep the weight of a large diesel model under 4kg, so the bodywork would be polystyrene sheet above the footplate with a steel underframe for strength. Drive would be a Como geared motor in each bogie with bevel final drives to the axles and the batteries and electronics would be up in the plastic body.
A metal body would also be a lot more work with all those louvres and getting rc to work reliably over reasonable distances in a metal body isn't easy. Just been through all that with the Walker railcar.
The YDM-1s are quite a pretty engine actually I didnt realise the 10 class lineage went that far back. I assume that the 10 classes had the same motor and transmission as PVH 21? and EBR just ordered the same thing but as a locally made bogie job?
Sounds like a recipe for success at least most panels are fairly flat although as you said the louvres can be a pain. Will be plenty of time arranging lines of styrene unless you can make a punch and die to make them out of steel?
Thanks Invicta, loco weighs 1.5 KG so not heavy at all just the weight of the 10 AA batteries really. When i build the second one and steal a motor block out of it ill put a Kilo or two of lead in it to help it a long a bit but at the moment it has no problems hauling 7 wagons around a moderately graded track.
The green coach is a Bachmann Emily coach although its 1:22nd scale it fits in with my Australian 1:24th scale stuff and passes for some of the early TGR stock well enough although it needs a hit with some Dullcote and the whitewalls removed, if i ever find a second one ill be grabbing it for sure.
(pics are from Peter Knifes excellent Minnipa siding and Weston Langford)
I thought the colour scheme looked familiar..........
By the time I got to visit the Whyalla plant (I worked for BHP Steel before retirement), the G8s were being vandalised by Morrison-Knudsen into some of ugliest objects I've ever seen at the front of a train.
The PVH-1, the YDM-1 and the 10 class all have Paxman V12 prime movers and Voith transmissions, but each has a different version as far as I know.
What possessed anyone to think a rigid frame diesel with side rods and an NBL designed cooling system like PVH-1 could be considered suitable as a main line loco escapes me. NBL went under a year or so before the 10 class were delivered and the EBR had enough experience to know what they needed by then, so I guess Walkers had someone that understood cooling systems and just got on with it. I've read that the EBR approached Tullochs first, so perhaps the VR, or the TGR, warned them off.
Presumably EBR specified a Paxman for standardisation reasons, but Walkers never used Paxmans again and the 10 class were eventually fitted with Caterpillar prime movers. The DH prototype and it's very successful descendents were all built with Caterpillar, or Cummins prime movers.
Not sure my toolmaking skills are up to making a press tool for pressing out louvres in metal. The easy way to make them with polystyrene sheet is to use sections of Evergreen 'clapboard' sheet (weatherboards in Oz), inset into the body work.
That makes sense I'm sure transmission technology came along in leaps and bounds in those early years I guess steam locos with similar or longer wheelbases were doing it successfully previously so why not have the same in a diesel. Tullochs never seemed to really have a lot of success with their designs which is why i cant figure out how they survived in the marketplace for so long! I will admit I am quite partial to the VR and TGR W's though and the DRC's even if Mechanically they were atrocious!
Looking forward to footage of your line in due course - the fires and smoke sound terrible, I hope they're not affecting you too badly.
All the best,
The smoke drift has pretty much stopped now luckily which makes breathing a bit nicer. Even though i live a few hundred kilometers from the fires Melbourne still had this amazing thick haze through it. at one point visibility was so bad at work you couldnt see the sand plant from the workshop which is less then a kilometer away...
I ended up installing another reciever into the loco which has cured the problem for now. I'll have to send an email to micron and see what they want to do with it.
The Video is pretty poor quality thanks to the poor light conditions and the fact it was taken on a phone but ill do a few more hopefully before winter rolls around
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