Interesting prototype
Posted: Fri Jul 14, 2023 5:27 pm
Anyone fancy a challenge?
Rik
Rik
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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
That is amazing!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!
Yes, I wondered if they needed the 10 wheels to distribute the weight of all that gear.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.
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!).ge_rik wrote: ↑Sat Jul 15, 2023 1:35 pmYes, I wondered if they needed the 10 wheels to distribute the weight of all that gear.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.
Rik
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!)
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.ukdrewzero1 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
That is the ultimate Christmas train!ge_rik wrote: ↑Sat Jul 15, 2023 7:39 amThat is amazing!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!
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