GG1 Curiosity Question

Jake,
See if this helps: GG! in Layers

Note the circle between the rear of the lead truck and the ahead of the first driver. This is where the bolster sits on the frame.

Wikipedia also answers most of your question.........

Big Jim posted:

Jake,
See if this helps: GG! in Layers

Note the circle between the rear of the lead truck and the ahead of the first driver. This is where the bolster sits on the frame.

Thanks for sharing those.  I have seen both the layered graphics as well as the photo, but you just clarified what I was already thinking.  It appeared that the body sat on the bolster bowls cast in the frame as on a standard truck, but it seemed like it had to be more complicated than that.

NOPE!

My engineering skills have atrophied, but I would guess that the weight of the superstructure would better be distributed somewhere around the center driver, as with the New Haven from which it was copied?

bob2 posted:

My engineering skills have atrophied, but I would guess that the weight of the superstructure would better be distributed somewhere around the center driver, as with the New Haven from which it was copied?

I was thinking that too. Yet, it looks like there is also a support between the second and third driver, much like on diesels.

But maybe the PRR did this so the locomotive would track curved better?

Too bad there was nota GG2!

Here's a picture from "The Remarkable GG1" by Karl Zimmerman showing a GG1 sitting on shop trucks (Archbars, no less!) which verifies the bolster locations:

The circled areas show sprung buffer plates, which (I presume) contact underside slide plates to transfer weight to the drive trucks and stabilize the body through curves.  The buffers on the other side are obscured by the traction motors:

Rusty

I can never understand when people who belong to this forum for a reason come here to ask others about things they don't know and then get told to "do a search on Google" or as in this case " Wikipedia also answers most of your questions". While he could have looked it up on Wikipedia, he can't interact like he can here and ask questions.

And how does one know if those sites have the right info?

Rusty Traque posted:

Here's a picture from "The Remarkable GG1" by Karl Zimmerman showing a GG1 sitting on shop trucks (Archbars, no less!) which verifies the bolster locations:

The circled areas show sprung buffer plates, which (I presume) contact underside slide plates to transfer weight to the drive trucks and stabilize the body through curves.  The buffers on the other side are obscured by the traction motors:

Rusty

 

The sprung buffer plates are a detail I hadn't previously noticed.  That makes a little more sense load wise than it simply riding on the bolster bowls near the outer ends of the truck frames.  The frame structure of the body was very similar to a truss bridge with the ends sitting just over where the body bolsters would be.  Pretty sturdy locomotives I'd say.

ConrailFan posted:

I can never understand when people who belong to this forum for a reason come here to ask others about things they don't know and then get told to "do a search on Google" or as in this case " Wikipedia also answers most of your questions". While he could have looked it up on Wikipedia, he can't interact like he can here and ask questions.

I never got that either. But at least it doesn't rise to the level of obnoxiousness that exists on Trainorders (especially among those who I like to call the Amtrak / High Speed Rail Mafia) or the filth and vulgarity that is permitted on Altamont Pass's forum.