Garden Railway Forum

Anyone fancy a challenge?
Rik

This is a prototype "electric locomotive" model-1082 made in Austria in 1932. The current flows in the following order: pantograph → transformer → rotary phase converter (converts single-phase AC to three-phase AC) → DC generator → DC motor.

I believe it was made by a company which had, up to that time, made steam locos so they just adapted one of their models to electric power.

Rik

A 2-10-2, certainly won't go around my track, lol

ge_rik wrote: ↑Fri Jul 14, 2023 5:27 pm Anyone fancy a challenge?FB_IMG_1689351890174.jpg

Not me

-steves- wrote: ↑Fri Jul 14, 2023 5:41 pm A 2-10-2, certainly won't go around my track, lol

I'm wondering if it's articulated - a 2-4-6-2

Rik

ge_rik wrote: ↑Fri Jul 14, 2023 11:20 pm

-steves- wrote: ↑Fri Jul 14, 2023 5:41 pm A 2-10-2, certainly won't go around my track, lol

I'm wondering if it's articulated - a 2-4-6-2

Rik

I don't think so... There's a hinge pin in the coupling rod, but only to allow for vertical movement. Which reminds me of another interesting prototype, the Hagens Oscillating Lever System. http://www.douglas-self.com/MUSEUM/LOCO ... hagans.htm

There is apparently a metal kit of the BBÖ 1082 in a smaller scale- possibly HO. Here's a nice detailed write-up if you can read German (there's also an Italian version): http://www.rotaie.it/New%20Pages/Costru ... tsche.html

The pictures are much clearer than those of the prototype!

[Edit: 1082, not 1802]

drewzero1 wrote: ↑Sat Jul 15, 2023 3:16 am There is apparently a metal kit of the BBÖ 1802 in a smaller scale- possibly HO. Here's a nice detailed write-up if you can read German (there's also an Italian version): http://www.rotaie.it/New%20Pages/Costru ... tsche.html

The pictures are much clearer than those of the prototype!

That is amazing!
A real labour of love to design and etch all those parts. The model looks even more fascinating than the real thing.
Rik

I can understand why, to experiment on, they might simply use the chassis/body of an existing steam engine, but I can't for the life of me understand why they would choose such a massive and complicated one to play with!

This is just a guess on my part, but the illustration attached in the first post from Rik shows how much electrical equipment had to be fitted in, and I understand such items are, or were, very heavy indeed. However, to go to the trouble of re-engineering a boiler to cover it all up seems excessive.

Peter Butler wrote: ↑Sat Jul 15, 2023 10:57 am This is just a guess on my part, but the illustration attached in the first post from Rik shows how much electrical equipment had to be fitted in, and I understand such items are, or were, very heavy indeed. However, to go to the trouble of re-engineering a boiler to cover it all up seems excessive.

Yes, I wondered if they needed the 10 wheels to distribute the weight of all that gear.

Rik

ge_rik wrote: ↑Sat Jul 15, 2023 1:35 pm

Peter Butler wrote: ↑Sat Jul 15, 2023 10:57 am This is just a guess on my part, but the illustration attached in the first post from Rik shows how much electrical equipment had to be fitted in, and I understand such items are, or were, very heavy indeed. However, to go to the trouble of re-engineering a boiler to cover it all up seems excessive.

Yes, I wondered if they needed the 10 wheels to distribute the weight of all that gear.

Rik

As I understand it, the electrical equipment converted AC supply into DC for the traction motors. The lumps in the "boiler" would have been huge masses of iron with copper wire coiled around, and (if I'm reading correctly) might have also had a rotating component in the center for the phase conversion. I have a small suitcase-sized transformer that weighs about 100 pounds so I can hardly imagine the weight of such massive units (and so high off the rails as well!).

A similar unit we had around here were the Milwaukee Road 'bipolars', though these were articulated on either side of the center cab: https://en.m.wikipedia.org/wiki/Milwauk ... class_EP-2

ge_rik wrote: ↑Fri Jul 14, 2023 5:34 pm This is a prototype "electric locomotive" model-1082 made in Austria in 1932. The current flows in the following order: pantograph → transformer → rotary phase converter (converts single-phase AC to three-phase AC) → DC generator → DC motor.

At first glance, I thought this was like the Swiss steam locos that run on electricity. (Now there's another 16mm project - would probably need track/overhead power though, or a LOT of batteries!)

Fascinating stuff. Yes, I too thought it was an electrically powered steam loco at first but then thought, no - no one would be daft enough to build something like that. In some ways, it's reassuring to discover that the Swiss were willing to give it a go.

Dim

drewzero1 wrote: ↑Sat Jul 15, 2023 12:22 am I don't think so... There's a hinge pin in the coupling rod, but only to allow for vertical movement. Which reminds me of another interesting prototype, the Hagens Oscillating Lever System. http://www.douglas-self.com/MUSEUM/LOCO ... hagans.htm
hag1.gif

I stand corrected... I followed this rabbithole somewhat deeper than expected, and found that it wasn't uncommon for German locomotives to use a keyed sleeve axle (Klien-Lindner) or a sliding axle (Gölsdorf) to allow some lateral movement on the front and rear driven axles. Both of these methods are forms of semi-articulation that don't require a special connecting rod arrangement or extra linkages. (from modelrailroading.nl) (from internationalsteam.co.uk
)

So in other words, I think I've found enough interesting prototypes to keep me busy for at least the next decade!

And then, of course, there was always Arthur Heywood's radiating axled locos on the minimum gauge.
Rik

ge_rik wrote: ↑Sat Jul 15, 2023 7:39 am

drewzero1 wrote: ↑Sat Jul 15, 2023 3:16 am There is apparently a metal kit of the BBÖ 1802 in a smaller scale- possibly HO. Here's a nice detailed write-up if you can read German (there's also an Italian version): http://www.rotaie.it/New%20Pages/Costru ... tsche.html

The pictures are much clearer than those of the prototype!

That is amazing!
A real labour of love to design and etch all those parts. The model looks even more fascinating than the real thing.
BBÖ1082_ModelloFinitoSxAnt.jpg


Rik

That is the ultimate Christmas train!