European Railroad Discussion > Sweden: American Style Truck?

Hopefully back to the lighter discussion subjects, here is the truck under "Hilts" T43 of HectorRail. The resemblance to this Santa Fe Geep truck is striking. It looks like an almost direct copy of the American one. There is a Nohab builders plate at the side of T43s other truck so I suppose this was not built in U.S., or was it?

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Maybe this even runs with EMD D77 traction motors? I wonder which of the foreground motors is D77, if any / is there any way to tell the difference just by looking?



Edited 1 time(s). Last edit at 11/17/14 07:46 by McKey.

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McKey Wrote:
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> Maybe this even runs with EMD D77 traction motors?
> I wonder which of the foreground motors is D77, if
> any / is there any way to tell the difference just
> by looking?
Isn't that a GE loco, those certainly look like GE two axle trucks, not the EMD Blombergs of picture 2

Nohab is a licensed builder by EMD. They built the Nordic version of the double headed F units (at least that's what I call them).

here's the Wikipedia page with some links

http://en.wikipedia.org/wiki/NOHAB

That is indeed a GE B40-8, but in front of it lie a bunch of used track motors, probably from under Geeps (that is EMD built), since they were plentiful and many have been scrapped or totally rebuilt.

86235 Wrote:
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> McKey Wrote:
> --------------------------------------------------
> -----
> > Maybe this even runs with EMD D77 traction
> motors?
> > I wonder which of the foreground motors is D77,
> if
> > any / is there any way to tell the difference
> just
> > by looking?
> Isn't that a GE loco, those certainly look like GE
> two axle trucks, not the EMD Blombergs of picture
> 2



Edited 1 time(s). Last edit at 11/17/14 09:19 by McKey.

Yes, here are our favorite class My and Mx locos as they were known in Denmark where they were built by Nohab. Swedish classifications today are Tmy and Tmx, but their sisters in Denmark still retain their My and Mx classification.

But what about the Bloomberg lookalike truck?

Second picture by Ilkka.

ReginaX55 Wrote:
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> Nohab is a licensed builder by EMD. They built the
> Nordic version of the double headed F units (at
> least that's what I call them).
>
> here's the Wikipedia page with some links
>
> http://en.wikipedia.org/wiki/NOHAB



Edited 2 time(s). Last edit at 11/17/14 09:26 by McKey.

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I. I don't see much similarity between the EMD pattern Blomberg truck and the trucks under the T43 other than such common features as brake cylinder placement and general pedestal layout. Note the T43 truck seems designed [ as I look at it, but I'm not a bogie engineer ] to transmit tractive and braking effort through the "traction bar" on the sides rather than through the center pin / bowl as on the Blomberg or any other classic North American locomotive truck of that era. To me the T43 truck has more in common with the truck NH put under, for example, Rc's.
I imagine the T41's used the same A1A truck found underneath many "Nohab's", and those truck castings might have come from North America.

II. I could be wrong, but I don't think the T43's used D77's -- but the T44's did !

Best, SZ

Edited to add: I believe the T43's traction motors are model ASEA LJB 76; these were also used under some "Nohab's" and thus may have some design commonality with an EMD equivalent.

Edited a second time to correct mental typo's.



Edited 2 time(s). Last edit at 11/17/14 17:23 by Steinzeit.

Looks like you are right on both crucial facts here:

1) How the power is transmitted. I did not realize the assembly at the side in fact does more than just carries locomotive weight since it is shielded.

2) The usage of ASEA track motors instead of EMD ones can indeed be found on most sources. So this must be the case. I will check this on my T43 book a little later to be sure.

So despite the first looks of the truck here being similar it appears we have two different solutions.

Thank you very much Steinzeit for taking time to clarify the facts on this locomotive! To me it looks like we also found one of the points where "the Swedish" designs took a step to become Swedish away from being purely American. I mean just the suspension and the track motors.


Steinzeit Wrote:
-------------------------------------------------------
> I. I don't see much similarity between the EMD
> pattern Blomberg truck and the trucks under the
> T43 other than such common features as brake
> cylinder placement and general pedestal layout.
> Note the T43 truck seems designed [ as I look at
> it, but I'm not a bogie engineer ] to transmit
> tractive and braking effort through the "traction
> bar" on the sides rather than through the center
> pin / bowl as on the Blomberg or any other classic
> North American locomotive truck of that era. To
> me the T43 truck has more in common with the truck
> NH put under, for example, Rc's.
> I imagine the T41's used the same A1A truck
> found underneath many "Nohab's", and those truck
> castings might have come from North America.
>
> II. I could be wrong, but I don't think the T43's
> used D77's -- but the T44's did !
>
> Best, SZ
>
> Edited to add: I believe the T43's traction
> motors are model ASEA LJB 76; these were also
> used under some "Nohab's" and thus may have some
> design commonality with an EMD equivalent.
>
> Edited a second time to correct mental typo's.