Austro Daimler Build project - VIDEO

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Re: One for another day - the Austro Daimler.

Post by philipy » Tue Aug 23, 2022 2:51 pm

Thanks Graeme. In principle thats what I've been aiming at, but the dims will be useful to check what I've got.

Your choice of RS for gears is interesting. I did look at RS but at £3.54 for the 5 gears, plus £4-95 p&P, + Vat, the bottom line was over £10. I don't need 5 gears and I got one pair from MotionCo for £4-95 post free.

I assume that the brass sleeve on the axle adjacent to the gear is simply a spacer to keep the gear mesh?
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Re: One for another day - the Austro Daimler.

Post by GTB » Tue Aug 23, 2022 11:28 pm

Andrew wrote: Tue Aug 23, 2022 2:22 pm I think your description of the loco as a mobile bread bin was most unfair - it looks more like a toaster...
Can't say I've ever seen a toaster with a lid. Look up the word 'Esky'...........

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Re: One for another day - the Austro Daimler.

Post by GTB » Tue Aug 23, 2022 11:58 pm

philipy wrote: Tue Aug 23, 2022 2:51 pm I assume that the brass sleeve on the axle adjacent to the gear is simply a spacer to keep the gear mesh?
I wondered how much that den of thieves in Westminster would manage to push up the cost of the gears. Here in Oz, RS sent stuff out post free until covid screwed up the supply chains. Now I batch orders to get over the p&p threshold. There's not a lot of choice here for buying small plastic gears of decent quality.

Yes, the brass sleeve is a piece of K&S tube used as a spacer to stop the axle slopping around and affecting the gear mesh. There's also a thin brass washer on the other side in the current design, to reduce friction from the gear boss rubbing on the gearbox.

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Re: One for another day - the Austro Daimler.

Post by philipy » Wed Aug 24, 2022 6:12 am

GTB wrote: Tue Aug 23, 2022 11:58 pm
Here in Oz, RS sent stuff out post free until covid screwed up the supply chains.
RS used to be post free here as well, although they actually stopped that before Covid. I must admit that I did used to push it a bit ( as I'm sure others must have done), just ordering a couple of resistors, or whatever, whenever I needed and getting them delivered overnight. The paperwork alone must have cost more than the value of the order, let alone adding in the free delivery!
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Austro-Daimler 12A

Post by philipy » Fri Aug 26, 2022 10:39 am

I thought it would be a good idea to separate my build notes from Andrews original "Off Topic" thread, so I'll split that thread and then continue with the build below.
The pictures and drawings are still in the original thread at :
https://gardenrails.org/forum/viewtopic ... 35#p170035
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Re: Austro Daimler.

Post by philipy » Fri Aug 26, 2022 11:10 am

A kit of bits for the body and underframe....
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Re: Austro Daimler Build project

Post by Whk2000 » Tue Aug 30, 2022 10:49 pm

Nice to see the work being done on others making them! I've been collecting the drawings and research with a view to drawing one up myself to print on my own machine but alas not got round to it yet.

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Re: Austro Daimler Build project

Post by Andrew » Wed Aug 31, 2022 2:43 pm

Whk2000 wrote: Tue Aug 30, 2022 10:49 pm Nice to see the work being done on others making them! I've been collecting the drawings and research with a view to drawing one up myself to print on my own machine but alas not got round to it yet.
Ah, but you've provided the inspiratin, firstly with your Festipedia article, and then with your drawings!

It's looking good Philip, great progress!

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Re: Austro Daimler Build project

Post by philipy » Wed Aug 31, 2022 5:18 pm

My thanks to both of you. I wouldn't have known of the existence of this beastie if Andrew hadn't posted about it and I wouldn't have had plans and pictures to work from without your input, Whk2000. I must admit I felt a little bit guilty in pinching your research, I know how time consuming that can be. So my thanks to you for your generosity.

Anyway, some progress although not as much as I had hoped, for several reasons: I had to redraw/reprint a few bits due to errors. Getting the batteries in proved to be a bit of a pain until I had a bright idea ( more about that in a bit). The post strikes have delayed delivery of 3mm axle bushes ( I thought I had some but they turned out to be 1/8" GRRR!) and Micron have put me on the waiting list for a 603!

Sooo... this is where I am at the mo.
1) The body is mostly put together and had a prelim rub down/tidy up. The battery box is in the LH end and has a cover to be screwed on in due course.
2) Getting the batteries in was a trial. They sit in 2 rows, a three above a two but not tight, so every time I tried to do anything they slipped and went out of line and didn't fit in. I tried tape, and glue, and all sorts but they would NOT stay where I put them. Then I had my bright idea and printed a 'mould' by extending walls up from the drawing of the inside face of the compartment end. This holds the batteries in the correct alignment and automatically spaces them! Then a glue gun locked them in place and allowed me to solder the tags, and now I have a nice rigid custom shape battery pack which is what you can see in the 'mould' at the RHS.
3) The roof is printed.
4) The chasis is done and the motor mounted. The motor can't actually be seen in the picture because I've printed a 1mm thick cover for it to try to protect the very fine gearbox from the worst track debris.
5) I've also resin printed the fuel tank and a rudimentary engine ( not in picture).
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Re: Austro Daimler Build project

Post by philipy » Fri Sep 16, 2022 5:04 pm

Just a quick update.
Unfortunately, life has got in the way of 'art' for the last couple of weeks, but this afternoon I did have it running up and down a length of track with quite satisfactory results. Unfortunately it only has a simple on/off switch atm because it isn't worth doing anything fancy until Andy can sell me a new Micron Rx.

If you remember, my original plan was to to use a 30rpm N20 Gearmotor, but trials showed that was too slow even for this wee beastie, so I swapped it for a similar 100rpm version. Going flat out ( ie no motor speed control) it is now perhaps just a tiny bit fast, but it should just about be spot on with the rc control, in due course.

No pictures with this post because nothing worth showing. Hopefully, there should be some proper progress in the next few days, so watch this space.
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Re: Austro Daimler Build project

Post by GTB » Sun Sep 18, 2022 5:21 am

philipy wrote: Fri Sep 16, 2022 5:04 pm If you remember, my original plan was to to use a 30rpm N20 Gearmotor, but trials showed that was too slow even for this wee beastie, so I swapped it for a similar 100rpm version. Going flat out ( ie no motor speed control) it is now perhaps just a tiny bit fast, but it should just about be spot on with the rc control, in due course.
I saw the chassis photo in another thread and it looks very workmanlike. Sounds like you are happy with how it runs.

Running a small loco at 30rpm at the wheels means it would take about 20 mins for one circuit of my backyard at a scale speed of about 1.5 mph, with the motor doing an imitation of a dentist's drill. In wet weather the snails would be overtaking it on the outside..... :shock:

Even back in my days working in HO, I never understood why british modellers insisted on slow running by using very high reduction gear boxes with the motor screaming its head off at max. revs. I like things to run nice and quiet and set my mechs up with lower reduction ratios and run the motor at half the rated voltage. The motors don't wear out as fast and now with battery power I don't need to find space for as many cells, especially in the small railmotors I like to build.

What Rx were you planning on using? I bought a couple of the RSC version of the new Micron MR603a, one of which was intended for use in a railmotor. What doesn't show in most of the photos is the electrolytic capacitor on the back of the board, which made it too large to fit in the intended model.

Regards,
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Re: Austro Daimler Build project

Post by philipy » Sun Sep 18, 2022 6:23 am

GTB wrote: Sun Sep 18, 2022 5:21 am

What Rx were you planning on using? I bought a couple of the RSC version of the new Micron MR603a, one of which was intended for use in a railmotor. What doesn't show in most of the photos is the electrolytic capacitor on the back of the board, which made it too large to fit in the intended model.
I was planning on using a Micron 603b, but I'm on a waiting list of unknown length for delivery, so yesterday morning I dropped Andy a line asking about his thoughts for using a Deltang 41/43/45 instead.

Interesting, your comment about the capacitor. I must admit that I had wondered why the board dims had such a large figure ( 10mm) for the thickness, but that would explain it. In my works layout planning for this A-D I had simply drawn a rectangular box of the correct o/a dims and worked with that, so it doesn't bother me as such this time around because I have the room.
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Re: Austro Daimler Build project

Post by Phil.P » Sun Sep 18, 2022 10:17 am

The 'B' is better, in this respect :
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MR603 'A' and 'B'
MR603 'A' and 'B'
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Re: Austro Daimler Build project

Post by Phil.P » Sun Sep 18, 2022 10:24 am

I have boards you can use with the smaller Deltang receivers..
A 'bigger' ESC, and a regulator for the supply to the receiver. These allow you to go up to a '2S' battery, and more than the 500mA limit of the receiver's ESC.

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Re: Austro Daimler Build project

Post by Andrew » Wed Sep 21, 2022 12:45 pm

philipy wrote: Fri Sep 16, 2022 5:04 pm Unfortunately, life has got in the way of 'art' for the last couple of weeks
I know that feeling...

philipy wrote: Fri Sep 16, 2022 5:04 pm Hopefully, there should be some proper progress in the next few days, so watch this space.
Looking forward to it! Sounds great so far...

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Re: Austro Daimler Build project

Post by philipy » Mon Sep 26, 2022 4:52 pm

Slow, but progress.
This shows the driver, his seat and his handbrake ( at least I assume thats what it is - it appears on the drawings, but no piccys, unfortunately). Also the fuel tank, plus the engine which is a sort of cobbled up version, made up from several pictures which appear to show various versions. I used the bits which appealed to me for one reason or another, plus some of my own invention for practical modelling purposes.
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I've also now got the r/c, which is working fine on the motor control.
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Re: Austro Daimler Build project

Post by philipy » Wed Oct 05, 2022 11:33 am

Still creeping forward slowly and I've now got to the stage of THINKING about painting :D .
This is where I need the assistance of the more petrol-headed amongst the membership. The engine is completely exposed, so I've been trying to find what colour a Daimler engine would have been painted back in the day. The best I've been able to find, on a vintage car forum, is a reference to "Daimler standard grey-green" but no indication what that means in the real world. I also found a bespoke paint maunufacturer who sells Daimler paint allegedly matched to a piece of brand new and unused piece of engine, but again no colour swatch to even give a clue and I don't really need complete canful of paint to find out!
Any offers anyone?
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Re: Austro Daimler Build project

Post by GTB » Wed Oct 05, 2022 12:12 pm

philipy wrote: Wed Oct 05, 2022 11:33 am Still creeping forward slowly and I've now got to the stage of THINKING about painting :D .
This is where I need the assistance of the more petrol-headed amongst the membership.
Accordinging to the original posted links that started this, while that particular model of loco was built by Austro-Daimler, the motor was actually made by Jenbacher Werke. Who also made their own diesel locos.

Plug 'Jenbacher JW20 diesel motor' into google and you'll get a few coloured photos, but the photos show a single horizontal cylinder motor with twin flywheels, in a range of colours......... :roll: When I get back home I'll see if there is anything in the book on Bundaberg Foundry diesels, as they made a few small mining locos under licence that used Jenbacher diesel motors.

There was more than one Daimler company in the world, in the UK it was part of Jaguar.....

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Re: Austro Daimler Build project

Post by philipy » Wed Oct 05, 2022 2:09 pm

Graeme,
Thanks for your input as always. I can't see where it mentions the Jenbacher in the articles, but I'm notoriously blind when it comes to searching.
However, the end outlines and plan drawings as part of the original drawings seem to show one of these ( or at least a similar model) : https://www.austrodaimler.at/fotogaleri ... fahrzeuge/ - picture 16 in the gallery.
Which is described as "Austro Daimler 4 Zylinder Feldbahnmotor Type FB 12 mit 12PS Leistung, luftgekühlter Benzinmotor mit Draisinengetriebe, gebaut ab 1928."
Which Google translates as "Austro Daimler 4-cylinder field railway engine type FB 12 with 12 hp, air-cooled petrol engine with handcar transmission, built from 1928"

"
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Re: Austro Daimler Build project

Post by GTB » Wed Oct 05, 2022 10:36 pm

philipy wrote: Wed Oct 05, 2022 2:09 pm Which Google translates as "Austro Daimler 4-cylinder field railway engine type FB 12 with 12 hp, air-cooled petrol engine with handcar transmission, built from 1928.
Ahhhh... I was looking at a link posted by Andrew.http://www.feldbahn.at/fahrzeuge/verbre ... aimler.php

Looking at it again, I may have gotten off track, as your model looks like the 'Kromag' loco, with the lifting roof and a steel body. The Daimler shown on that page is fetchingly clad in varnished wood......

Industrial engines wouldn't necessarily be the same colour as a car engine. There's an early Austro-Daimler industrial engine in the Powerhouse Museum in Sydney. Looks like the sort of colour you'd find in Revell and other brands of military paint colours. https://collection.maas.museum/object/206779

Re-engine it with a small Gardiner diesel, or a Dorman, which is what any sensible '30s british engineer would have done when the original petrol motor wore out. 8)

Graeme

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