Atlas Model Railroad Co. - ATLAS B23-7 VS. B30-7A
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 ATLAS B23-7 VS. B30-7A
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CNRailfan

Posted - 2005 November 09 :  07:38:22 AM  Show Profile
What is the main spotting differences between the B23-7 and B30-7A? Before any one answer this question, I'm not talking about the 16 cyl. B30-7. The B30-7A was a 12 cyl. engine like the B23-7.

I want an Norfolk Southern unit of the B30-7A but Atlas doesn't make one with the high hood. They do make a B23-7. Can this unit past as a B30-7 right out of the box?

Country: | Posts: 17

danraitz

Posted - 2005 November 09 :  08:03:14 AM  Show Profile
There are no major spotting differences between the B23-7 and the B30-7A.
So, yes you could use the B23-7 to represent a B30-7A.

Dan



Country: USA | Posts: 84 Go to Top of Page

johnh

Posted - 2005 November 09 :  08:59:17 AM  Show Profile
The most noticeable difference is the number of doors in front of the radiator. The B23 has 6, where the B30 has 8.


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CNRailfan

Posted - 2005 November 09 :  09:28:59 AM  Show Profile
With the 8 doors, is that the B30-7 or the B30-7A which are different units? As I stated in my previous post, I'm looking for a B30-7A which was the 12 cyl. unit like the B23-7. Since Atlas makes the B23-7 in the Norfolk Southern paint. Will it past for a B30-7A? Not the 16 cyl B30-7.


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Ed Kapuscinski

Posted - 2005 November 09 :  09:55:25 AM  Show Profile  Visit Ed Kapuscinski's Homepage
I believe the stack will be different. I think the B30-7as were later production units and the Atlas B23 represents an earlier one.
This is mostly conjecture and a faint memory of reading something about it in a mag a long time ago.

When all else fails, look at prototype photos.



Visit: http://Conrail1285.com | Join: http://TheCRHS.org

Country: Fyro Macedonia | Posts: 1945 Go to Top of Page

Robbman

Posted - 2005 November 09 :  11:01:07 AM  Show Profile  Visit Robbman's Homepage
If you're not picky, yes, you can pass a renumbered NS B23-7 as a NS B30-7A.

Southern/NS B30-7As are oddballs in terms of length and wheelbase (they don't fit into the GE four axle -7 wheelbase/length changes either)...


www.krunk.org/ns-nrv

www.mark4design.com

www.blmamodels.com

Country: USA | Posts: 2412 Go to Top of Page

CNRailfan

Posted - 2005 November 09 :  12:24:04 PM  Show Profile
Thanks to everybody who replied. I went to the MoPac Power - Screaming Eagles Over the Prairie

http://www.trainweb.org/screamingeagle/


It states that the B23-7 and the B30-7A has the 6 doors. I don't know if this is true as far as the Norkolk Southern units go because every picture I've seen is not that good.

Atlas B23-7 is in fact a B30-7A right out the box as far as the Missouri Pacific goes.



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CNRailfan

Posted - 2005 November 09 :  12:46:40 PM  Show Profile
Finally found a picture of a Norfolk Southern B30-7A. It has 6 doors!

http://www.abocanyon.clara.net/page89.htm

The bigger exhaust stack will not be a problem to added if I desire. Atlas has 2 units in one.
Do you think they know? LOL. I don't want them to go up on the price!



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NandW

Posted - 2005 November 09 :  12:52:22 PM  Show Profile
You'll find a few more pics here:

http://www.nslocos.com/nsb30.html




Country: Pitcairn Island | Posts: 4227 Go to Top of Page

CNRailfan

Posted - 2005 November 09 :  12:56:07 PM  Show Profile
Perfect. Thanks. I count 6 doors.


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daniel_leavitt2000

Posted - 2005 November 09 :  2:30:58 PM  Show Profile  Visit daniel_leavitt2000's Homepage
The B23 and B30-7A are the same carbody. I belive that the latter production B series had a slightly longer wheelbase then the Atlas model. The frame may also be about a foot longer. Since the size difference is spaced along the carbody, this shoulden't be a big issue. This is why Atlas has not introduced a B36-7 in Conrail (which were PIII units).

The stack apears to be the one used on the B40-8, not the smaller B36-7 (which where larger then the B23-7) version. I belive they all fit into that slot. I ended up using the smaller B36-7 stack for my C30-7As as they fit the opening better on the Kato kitbash.

Make sure you check the access panels on BOTH sides just below the main radiator screen. I belive all P111 GE units featured that access panel on both sides, where the Atlas model features either a small radiator panel on one or both sides.

Suposedly the Bachmann HO scale B23-7 were the late Phase variety. It is possible that their new N scale version will be the phase you are looking for. Suposedly this and the new H16-44 are suposed to be the upgrade standard line engines that will allow Bachmann to retire their venerable GP40, U36B and GP50 models. They may also come with DCC when included with the EX command system. They should feature knuckle couplers.


Goodbye and good luck.

Country: USA | Posts: 2228 Go to Top of Page

Robbman

Posted - 2005 November 09 :  5:02:20 PM  Show Profile  Visit Robbman's Homepage
Dan, Southerns B30-7A1s do not use the same carbody as a Phase III B23-7 (VERY minor differences though), nor are they the same wheelbase or length as a Phase III four-axle -7. They were built on longer frames.



www.krunk.org/ns-nrv

www.mark4design.com

www.blmamodels.com

Country: USA | Posts: 2412 Go to Top of Page

daniel_leavitt2000

Posted - 2005 November 09 :  7:13:58 PM  Show Profile  Visit daniel_leavitt2000's Homepage
Were they built on an export frame or somthing? Its kinda wierd that they would have a frame for so few orders.

Goodbye and good luck.

Country: USA | Posts: 2228 Go to Top of Page

Robbman

Posted - 2005 November 10 :  2:12:52 PM  Show Profile  Visit Robbman's Homepage
It's not weird to me... GE used completely different frames for the B32-8s (vs the B39/40-8s) and the C32-8s (vs the C39/40-8s)

It's not an export frame, it's just a modified frame (making frame longer or shorter or kicking a truck out a foot isn't a huge ordeal when constructing a locomotive)


www.krunk.org/ns-nrv

www.mark4design.com

www.blmamodels.com

Country: USA | Posts: 2412 Go to Top of Page

njtalp46

Posted - 2005 November 13 :  12:23:16 PM  Show Profile
You could convert an Atlas B30-7 to high hood using styrene. There was an article in the latest issue of N-scale Magazine involving an Atlas B30 that was converted.

________________________
MTL has problems.....

Even I'm bored

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Robbman

Posted - 2005 November 13 :  12:50:58 PM  Show Profile  Visit Robbman's Homepage
Or you could simply use the B23-7 high-nose... but that would give you a high-nose B30-7, which is not a high-nose B30-7A1...



www.krunk.org/ns-nrv

www.mark4design.com

www.blmamodels.com

Country: USA | Posts: 2412 Go to Top of Page
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