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For all of you train buffs that lounge in the SOH pub.

michael davies said:
Jeff

Does any one know if you can get a brass O gauge model of the GG1 anywhere ?, preferably as a kit as I tend to prefer to make them myself.

Michael
Click to expand...

Sunset Models has one listed: http://www.3rdrail.com/reservation.html#gg1
or you might be able to find one of these:
http://users.foxvalley.net/~osn/BillWolfer1996.htm

Also ran into this: http://www.kohs.net/PDFs/GG-1 Specification Sheet.pdf
and they list two for sale: http://www.kohs.net/Roundhouse/Roundhouse.htm

I wish you guys hadn't started this thread! Now I'm going to get distracted and start thinking about the empire not-yet-built in the basement.. and then the wife will...:argue:

Rob
 
Willy, was that the tug with the Fairbanks Morse OP engine(s)??

We've got 2 FM locomotives, including the 1st one they built.

[youtube]ruQqXtDdKTc[/youtube]

Jeff
 
And here is the King. The Union Pacific Big Boy 4-8-8-4.
For Wuh Wuz Dat, I lived in Beloit wisconsin where the FM locos were
built, everyone in my family worked there,Grandfathers all the way to me.
My father would take me over there when a new one rolled out of the
paint shop.ckissling
 
Good pickup.....I didn't make myself clear....since the G was a double ender, the center between the operating cabs had the steam jenny and the transformer.

The AC motors were a result of not having rectifyers when the locos were built in the 30s The G's were preceded by 2 other elec locos, the P5 and the P5 modified (which looked like a baby G) and 1920s coaches turned into self propelled MU cars.

You are correct, in a former life I was lucky enough to operate trains in the northeast with electric and diesel power.

WWD: neat stuff!!!:applause:
 
srgalahad said:
Sunset Models has one listed: http://www.3rdrail.com/reservation.html#gg1
or you might be able to find one of these:
http://users.foxvalley.net/~osn/BillWolfer1996.htm

Also ran into this: http://www.kohs.net/PDFs/GG-1 Specification Sheet.pdf
and they list two for sale: http://www.kohs.net/Roundhouse/Roundhouse.htm

I wish you guys hadn't started this thread! Now I'm going to get distracted and start thinking about the empire not-yet-built in the basement.. and then the wife will...:argue:

Rob
Click to expand...

Thank you some excellent links there :), the Kohs site has some other nice models too, though they all look like RTR so the price will be correspondingly high, though considering the amount of brass, not that much higher than a UK sized RTR steamer in O gauge. Certainly nine months ago with the poor ( good for UK ) exchange rate, any of them would have been a very good buy.

Dont worry about the distraction, its good for you LOL.

Best

Michael
 
WuhWuzDat said:
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
Click to expand...
WuhWuzDat said:
<o:p></o:p>
Contrary to what some people think, the motors in a GG1 are brush type motors, fully capable of running on either low frequency AC, or DC current. A true ac induction motor would tend to be a "single speed" motor, unless equipped with a variable frequency drive. While such drives are quite common nowadays, I think it would have taken an auxiliary car hooked up to the locomotive to carry the equipment need to do this with 1930' or 40's vacuum tube and mercury rectifier technology. <o:p></o:p>
<o:p></o:p>
Jeff
Click to expand...
<o:p></o:p>
<o:p></o:p>
Jeff, I'm not an 'experten' on GG1s LOL, but if my dim college recollections are correct then brushed AC motors are generally for rotor excitation and its via slip rings ?, as opposed to comm bars ?, if the GG1 follows that principle then the current through the slip rings is drastically lower than say the current through a DC motor comm bar, probably in the order of 10-20Amps, its basically there to supply rotor excitation so the stator can do most of the work, the Stator windings then take the larger starting current and through fixed terminations. Adjustments to the rotor current would give an effective form of motor control.<o:p></o:p>
<o:p></o:p>
The other problem with comm bars is that there are lots of them, all separated by insulation, the leading edge of each comm bar effectively becomes a mini chisel and scrapes off the bottom of the brush, slips rings don’t have that problem as there perfectly smooth all the way around so carbon dust is drastically reduced. Certainly images I've seen of GG1 motors suggest a pancake type motor with out a large comm section and large brush gear as seen on axel mounted DC motors of the day.<o:p></o:p>
<o:p></o:p>
I'd be interested to know how the motors can be run on DC, as I say its a long time since I was at college LOL so ze old grey cells are not what they used to be, but I do recall something about some motors be dual supply rated, I think we called them 'universal' motors or something. I suspect its probably only one or two shunt settings for solo loco movements ?, and at a very tenuous guess may have been an added function at building ( but never used ? ) with a view to perhaps shunting them around yards, especially at Sunnyside NY with its side contact 600V DC third rail set up as used by LIRR ?.<o:p></o:p>
<o:p></o:p>
Maybe some PRR depots used an overhead track with an umbilical that attached to the loco for shed movements, such a system is popular in the UK for London underground depots, a slotted overhead track has a lanyard type block that collects power and can slide down the slot, the other end is an umbilical cable that is plugged into the train allowing shunt movements at 5mph, very low power and very safe, no overhead or third rail power lines inside the shed, thus allowing full access under and over the stock.<o:p></o:p>
<o:p></o:p>
Hmm from steam engines to electric motor mechanics, none the less an interesting diversion, but as srgalahad suggests, back to topic LOL.<o:p></o:p>
<o:p></o:p>
Kindest<o:p></o:p>
<o:p></o:p>
Michael
 
Michael,
The GG1 DID use "universal" motors.

No, the GG1's did not run off of DC, but their predecessor, the NYNH&H EP3 (which used the same motors as the GE version of the GG1), did when running of NYC 3rd rail, in Grand Central terminal.

Jeff
 
WuhWuzDat said:
Michael,
The GG1 DID use "universal" motors.

No, the GG1's did not run off of DC, but their predecessor, the NYNH&H EP3 (which used the same motors as the GE version of the GG1), did when running of NYC 3rd rail, in Grand Central terminal.

Jeff
Click to expand...

Aha, that makes sense, I think all of the NYNH&H juice jacks were dual current collectors ?, and I believe the GG1 designers looked very closely at the 20 wheel bogies over there for ride comfort and picked them for the GG1. I think most of the ride comfort comes from the sheer mass of the cast bogie bed plate, over time I suspect they 'ironed' out most of the track bed lumps and bumps LOL.

Best

Michael
 
http://www.supertrain.ca/

If you watch the intro slideshow you'll even see that it's appropriate content for the Outhouse...

Yes, I'll be offline April 17-19th for the obvious reason:wiggle:

This keeps up we're going to need our own forum here :gossip:

Rob
 
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