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External differences on locomotives

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  • Member since
    January 2004
  • From: Reedsburg WI (near Wisconsin Dells)
  • 3,370 posts
External differences on locomotives
Posted by Noah Hofrichter on Thursday, May 27, 2004 4:31 PM
Okay I have a couple of questions.

What are the main external differences of GP38 and GP35 locomotives.

What are the main external differences of SW1200 and SW1500 switchers?

And the main external differences of SD20's and SD24's?

I mean mainly big things, not little tiny details, but any thing is apreciated. I'm looking into buying some cheap models of these locomotives and converting them into the other, so any help is apreciated

Noah
  • Member since
    December 2001
  • From: San Jose, California
  • 3,154 posts
Posted by nfmisso on Thursday, May 27, 2004 9:19 PM
QUOTE: Originally posted by Noah Hofrichter

I'm looking into buying some cheap models of these locomotives and converting them into the other, so any help is apreciated

Noah;

That is not the brightest thing to do.

For the GP35, get a RPP GP35 shell and frame, PPW/A-line has them
http://www.ppw-aline.com/railpower_products.htm
or watch for a Kato unit on ebay, there are several list now, fairly low price. Another alternative is the Bachmann Spectrum or Plus unit.

For a GP38, on the cheap older Atlas or ConCor, but go with the newer Atlas, Trainworld has some good prices on them.

For the SW1200, the P2K model can be had for $30. Trainworld again.

For the SW1500, Athearn.

For the SD20, these were rebuilds of SD24, and every one was slightly different, see:
http://index.mrmag.com/tm.exe?opt=S&cmdtext=SD20&MAG=ANY
Nigel N&W in HO scale, 1950 - 1955 (..and some a bit newer too) Now in San Jose, California
  • Member since
    December 2001
  • From: San Jose, California
  • 3,154 posts
Posted by nfmisso on Thursday, May 27, 2004 9:22 PM
QUOTE: Originally posted by Noah Hofrichter

What are the main external differences of GP38 and GP35 locomotives.

The GP38 is longer, has only two 48" cooling fans, vs the GP35 has two 48" cooling fans flanking a 36" cooling fan. Door layout different, depending on phase, fuel tank different shape.
QUOTE:
What are the main external differences of SW1200 and SW1500 switchers?

Cab shape. Some SW1500 road on flex coil trucks, most SW1200 had AAR-A trucks.
QUOTE:
And the main external differences of SD20's and SD24's?

Both vary wildly, the SD20s were rebuilds of SD24.
Nigel N&W in HO scale, 1950 - 1955 (..and some a bit newer too) Now in San Jose, California
  • Member since
    January 2004
  • From: Reedsburg WI (near Wisconsin Dells)
  • 3,370 posts
Posted by Noah Hofrichter on Friday, May 28, 2004 3:32 PM
Thanks alot for the help, I really appreciate it.

Noah
  • Member since
    September 2003
  • From: Omaha, NE
  • 10,621 posts
Posted by dehusman on Friday, May 28, 2004 6:15 PM
GP 35 vs 38 : Different truck centers, different fan arrangement, different hood door arrangement. Probably different trucks. With so many decent s of each out there.

SW1200 vs 1500 : again two completely different engines. Different grill shape, different hood shape, different cab shape, different steps area, different frame shape. About the only thing you can share beteen the two is the trucks.

Sd20 vs 24 : Since SD20's were rebuilt out of old SD18's and 24's, this one is feasible.

Dave H.


Dave H. Painted side goes up. My website : wnbranch.com

  • Member since
    September 2003
  • From: California - moved to North Carolina 2018
  • 4,422 posts
Posted by DSchmitt on Friday, May 28, 2004 6:24 PM
[;)]All Diesel locomotives look alike[:o)]

I tried to sell my two cents worth, but no one would give me a plug nickel for it.

I don't have a leg to stand on.

  • Member since
    April 2003
  • 305,205 posts
Posted by Anonymous on Friday, May 28, 2004 7:32 PM
QUOTE: Originally posted by dehusman

GP 35 vs 38 : Different truck centers, different fan arrangement, different hood door arrangement. Probably different trucks. With so many decent s of each out there.

To add to that, the GP35 has a turbocharger exhaust stack, while the GP38 was normally aspirated, and had a small exhaust stack in front of and behind the dynamic brake fan (or where the dynamic brake fan would be located).
QUOTE: SW1200 vs 1500 : again two completely different engines. Different grill shape, different hood shape, different cab shape, different steps area, different frame shape. About the only thing you can share beteen the two is the trucks.

Yeah, this will be VERY difficult to do, since the SW1200 has that flared hood arrangement, while the SW1500 has a narrow hood the width of the GPs, in addition to all of the other differences.

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