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I'm going to re-engineer the Turbine units with Hobbytown AAR "B" trucks and a new motor installation.  This way I get all the power and all wheel drive.  Room inside the carbody will be less than what's there now, but not by much.  Not sure if this can be pulled off on the newer U50 models.  Yeah, there's a lot of Diesel and related models out there with dead drive axles, but this is not my cup of tea by any stretch!  Gimme all wheel pick up and all wheel drive...all the time!  

Originally Posted by Ace:

I have a Con-Cor N-scale U50D which is powered only on the outer trucks. The inner trucks are just for looks and carry no weight. There is substantial weight on the driving wheels and the unit has excellent traction, so it isn't absolutely necessary to power all wheels for good performance. Some 6-axle N-scale locos have a similar situation with power to axles 1-2-5-6. Axles 3-4 carry no weight and basically 'float'. That arrangement helps the unit handle sharper curves. So I'm making the point that there are different ways to engineer model locomotives that will still perform well, AND handle relatively sharp curves.

Here's one of those old Con-Cor N scale units:


 

CONCORU50

 

Bob

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To help save tooling costs, the trucks from the MTH RS-3 could be used to create an AS-16.  The AS-616 frame could probably be used or modified slightly.  Any thoughts on this?Originally Posted by CNJ 3676:

Since the Baldwin six motor AS-616 was introduced to three rail O gauge by MTH, I've been of the opinion the four motor AS-16 would be a logical follow up. 

 

AS16

AS17

AS18

AS19

AS20

AS21

 

Yes, an AS-16, preferably decorated for Pennsylvania-Reading Seashore Lines, would suit me just fine.

 

Bob

 

Other than using a different generator and variation in certain details from order to order (not an identifying factor between locomotive types), Classes AS-16 and AS-616 were essentially the same locomotive from the frame up. Both units are 58' in length. The use of AAR Type "B" trucks should yield a credible AS-16.

 

B&Oas16

 

Bob

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If I'm not mistaken, some six-axle Baldwin roadswitchers were later converted to four axle.  Some Alcos(RSC-2, RSC-3) were also similarly converted(to RS-2, RS-3).  I got this info from the Second Diesel Spotters Guide and Diesels From Eddystone-both published years ago by Kalmbach Publishing.Originally Posted by CNJ 3676:

Other than using a different generator and variation in certain details from order to order (not an identifying factor between locomotive types), Classes AS-16 and AS-616 were essentially the same locomotive from the frame up. Both units are 58' in length. The use of AAR Type "B" trucks should yield a credible AS-16.

 

B&Oas16

 

Bob

 

Originally Posted by 56f100:
If I'm not mistaken, some six-axle Baldwin roadswitchers were later converted to four axle.  Some Alcos(RSC-2, RSC-3) were also similarly converted(to RS-2, RS-3).  I got this info from the Second Diesel Spotters Guide and Diesels From Eddystone-both published years ago by Kalmbach Publishing.

 

That's correct. For example, these Durham & Southern units built as Class DRS6-4-1500 were re-trucked and very closely resembled the AS-16:

 

ds364

ds365

 

Thank you for bringing up that excellent point regarding units being re-trucked.

 

Bob

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The higher hood of the United Pipe and Foundry--this hood was used on later model Baldwin roadswitchers.  The B & O had AS-16s with this style hood.  Likewise, some Pennsy AS-616 and the last 2 Norfolk Southern AS-416s.Originally Posted by CNJ 3676:

Some additional AS-16 units:

 

as17

as616

as618

 

Note the higher hood of the United States Pipe & Foundry 43.

 

Bob

 

Thank you, thank you, Bob!!  The PRSL AS-16 (with the original name board) is the diesel engine I grew up with. Ugly as sin, but I want one badly.
Guy
 
 
Originally Posted by CNJ 3676:

Since the Baldwin six motor AS-616 was introduced to three rail O gauge by MTH, I've been of the opinion the four motor AS-16 would be a logical follow up. 

 

AS16

AS17

AS18

AS19

AS20

AS21

 

Yes, an AS-16, preferably decorated for Pennsylvania-Reading Seashore Lines, would suit me just fine.

 

Bob

Gentlemen, you may interested to know, Darstaed are producing two diesels in the coming year. The V200 German loco, which Darstaed have already produced in 2 rail finescale, will be released in 3 rail, and will be equipped with Dallee e-units or ERR TMCC with Railsounds.

a V-200

 

We will also produce in 3 rail, again with either Dallee e-unit or ERR TMCC and RS4,

the British Railways "Warship" class diesel.

onslaugt

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Great. Please do keep us informed. In the meantime, I'll request to be added to the newsletter as you suggest.

 

The V200 is a true icon in European railway circles. When I was younger, it seemed as though every Marklin layout I saw had one on it. It reminded me of Lionel and the Santa Fe F3.

 

v199

v200

v201

v202

v203

v204

 

Bob

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Through it all the >>>GE 44 Tonner<<< is the one diesel model that would be a COMMERCIAL SUCCESS if a properly scaled model were made in 3-rail O scale. Of course, provision for drop-in Kadee coupler conversion would be desirable but any mass produced 3-rail model should come equipped with postwar compatible lobster claws.

Originally Posted by Hot Water:

I really can't understand all this discussion of "unusual" diesels, when someone really needs to do an ACCURATE, SCALE SD7 & SD9 in 3-Rail!!!!

I can go for that. Interestingly, I believe the model now in the RailKing line which MTH refers to as the SD9 is closer in appearance to the SD7 by virtue of the inward positioning of the classification lights.

 

A selection of SD7 units:

  

sd7a

sd7aa

sd7b

sd7c

sd7d

 

Bob

 

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Originally Posted by CNJ 3676:

I can go for that. Interestingly, I believe the model now in the RailKing line which MTH refers to as the SD9 is closer in appearance to the SD7 by virtue of the inward positioning of the classification lights.

 

Bob

I have looked at those, but I am hoping that MTH will "re-tool" their SD7/SD9 models so as to have fixed pilots & scale wheels for 2-Rail/3-Rail operation. Same goes for their GP9 models, no fixed pilots available, yet.

The C & O, Chessie and Indiana units ride on Alco trimounts from RSD-5s the C & O traded to EMD.Originally Posted by CNJ 3676:

Another early EMD six motor road switcher was the 1800 horsepower SD18 built from 1960 to 1963. Other than MPC's interpretation, this model has not been produced in three rail O gauge.

 

sd18a

sd18b

sd18c

sd18d

sd18e

 

Note the use of trucks from retired ALCo units on a few of the units pictured.

 

Bob  

 

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