Subject:
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Re: Dimensions of a SD40 and GP35
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 2 Dec 1999 08:06:37 GMT
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Reply-To:
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cmasi@cmasi=IHateSpam=.chem.tulane.edu
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Viewed:
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814 times
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Oops I foot noted without foot noting!
[1] "The Great Book of Trains", Brian Hollingsworth and Arthur Cook, Salamander
Books Ltd, London 1998, ISBN 0 86101 919 9.
Larry Pieniazek wrote:
> The GP35 is rather a boring engine in appearance. If you could pull off
> a GP30, that would be spectacular! Due to some "hacks" at design time,
> they have rather elaborate and ungainly fairing on the top of the hood
> which is a result of the "electrical cabinet, turbo charger, central air
> intake and filter all competing for space" (quoting my source).
>
> Note that the GP35 56'2" length is coupler tip to coupler tip. GP35s had
> 9 ft wheelbase trucks. (2 axle Blombergs unless they were riding on
> trade in Alco Type Bs) From truck kingpin to truck kingpin is only
> 32'0".
>
> An SD45 is 65'8" coupler tip to coupler tip or 40'0" kingpin to kingpin.
> It has 3 axle trucks with evenly spaced axles, which are 6' 9 1/2" axle
> spacing or 13' 7" wheelbase.
>
> Note that the SD 38 and 39, having smaller prime mover engines, but
> built on the same frame as the SD45, as John notes, will have shorter
> hoods, and therefore larger platforms at front and rear (nicknamed
> "porches" by boomers). The SDP40 used the extra hood space for a steam
> generator, so didn't have the porches.
>
> The SD45-T2 has an even longer frame at 45'5" kingpin to kingpin or
> 70'2" coupler tip to coupler tip. This is to allow for the extra space
> alloted to air intakes. These -Ts were built for tunnel service and have
> main air intakes mounted low on the hood to provide cooler, cleaner air
> to the prime mover and traction blowers.
>
> How are you going to model the SD trucks? My ersatz Alco used
> articulated trucks, which looks sort of OK but the wheelbase is way too
> long.
>
> (all dimensions from the MR Cyclopedia, Vol 2, Diesel Locomotives. (C)
> 1980 Kalmbach Publishing Co., ISBN 0-89024-547-9)
>
> John Neal wrote:
> >
> > Well, Chris-
> >
> > A GP35 was 56' 2"; an SD45 was 65' 8" (EMD used the longer underframe of
> > SD45 as a standard, which was then used for the SD38, SD39, and SD40).
> >
> > The main difference, however, is that the GPs were a B-B (4-4) wheel
> > configuration, while the SD's were a C-C (6-6) wheel config. *That* would
> > be noticeable at LEGO resolution;-)
> >
> > -John
> >
> > Christopher Masi wrote:
> >
> > > My train book list the length of one of these engines but not the other
> > > (cannot remember which one at the moment). I have pictures of both, but
> > > the big question remains; are they the same lenght or is one longer than
> > > the other? If one is longer than the other is it something that would be
> > > noticeable at LEGO resolution? For example, 60 vs 40 ft would be
> > > noticeable, but 45 vs 40 ft wouldn't be that big a deal.
> > >
> > > Thanks,
> > > Chris
>
> --
> Larry Pieniazek larryp@novera.com http://my.voyager.net/lar
> - - - Web Application Integration! http://www.novera.com
> fund Lugnet(tm): http://www.ebates.com/ ref: lar, 1/2 $$ to lugnet.
>
> NOTE: Soon to be lpieniazek@tsisoft.com :-)
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Message is in Reply To:
 | | Re: Dimensions of a SD40 and GP35
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| The GP35 is rather a boring engine in appearance. If you could pull off a GP30, that would be spectacular! Due to some "hacks" at design time, they have rather elaborate and ungainly fairing on the top of the hood which is a result of the (...) (25 years ago, 1-Dec-99, to lugnet.trains)
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